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vr2turbo

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vr2turbo

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Never tried a manual with SI mode. The forester with CVT the S mode pushes the rev higher into the engine power range, therefore giving better throttle response and probably more fuel feed. Like cruising at 110kph I mode only 1.8k rpm, S mode is around 2.5k
 

YellowFlash

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YellowFlash

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Mark X compression is 12:1 but GDi engine, can drink 95 no problem. You can try 97 but IMHO not worth the price difference.



For Swift Sport is a bit misconception. The fuel Ron requirement is 95-98, so minimum can still drink 95 without issues. I have tried all ron but now I just use 95 for my son's Swift Sport. In UK, most people also just fill up 95 for it.
The modern ecu on most cars has the ability to adjust to lower Ron fuel by retarding the ignition timing however if the car’s manufacturer tuned it for higher Ron (per car handbook) then you are actually sacrificing some performance. The higher compression of these performance tuned engine can take advantage of advancing ignition timing to take extract more power but by using lower octane fuel, in context of RPG gaming (for illustration purpose) you’re basically like a level 20 character with a level 10 weapon. It’s always up to individual’s choice what they choose but I wouldn’t want to buy a high performance vehicle and then not enjoy it as much.
 

YellowFlash

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YellowFlash

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Never tried a manual with SI mode. The forester with CVT the S mode pushes the rev higher into the engine power range, therefore giving better throttle response and probably more fuel feed. Like cruising at 110kph I mode only 1.8k rpm, S mode is around 2.5k
Wow I didn’t know the ecu can alter the CVT’s ratio. For the manual, it basically just alters the throttle response, on the 6th gear at 110kph, rpm is about 2.5k.
 

6UE5t

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6UE5t

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The modern ecu on most cars has the ability to adjust to lower Ron fuel by retarding the ignition timing however if the car’s manufacturer tuned it for higher Ron (per car handbook) then you are actually sacrificing some performance. The higher compression of these performance tuned engine can take advantage of advancing ignition timing to take extract more power but by using lower octane fuel, in context of RPG gaming (for illustration purpose) you’re basically like a level 20 character with a level 10 weapon. It’s always up to individual’s choice what they choose but I wouldn’t want to buy a high performance vehicle and then not enjoy it as much.
Yes but the difference in performance for my NA cars are barely noticeable so doesn't justify the price difference between the 2 Ron. Maybe I am old uncle already so butt not that sensitive anymore to such marginal difference. If true high performance sports car and turbo cars surely should have much more difference
 

RENESIS VIII

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RENESIS VIII

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View attachment 572847


Yet to get a boost control so far, so the only way to artificially control my boost is through the different SI-Drive modes which alter the throttle response affecting the boost level. The I-Mode which typically keeps my boost below 0.5 bar can feel quite sluggish to drive.
Nice. You that's a GRF chassis WRX STI isn't it? Since you mentioned 2.5
 

vr2turbo

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vr2turbo

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Wow I didn’t know the ecu can alter the CVT’s ratio. For the manual, it basically just alters the throttle response, on the 6th gear at 110kph, rpm is about 2.5k.
ECU already controls the CVT, right? Step on the fuel rev goes up, then slowly pick up speed until final ratio. The paddle shifters also changes the CVT ratio....
 

ixeo

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ixeo

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There is 2 sports mode, one being just normal sports mode, the other is sports sharp which really brings the car alive, giving the raw brutal feel from the previous version STI where there is only 1 mode. Fuel consumption is about 10% lousier even when driving on the normal sports mode, gets much worse when switched to sports sharp.

The different modes vary only the throttle mapping which indirectly affects boost response/delivery.

As for the power delivery to front/rear, it is controlled by Subaru’s DCCD, sort of like the Evo’s SAYC or the Skyline’s Attesa system.
So if I understand you correctly the "sports mode" is just a boost controller + throttle controller. I assume your model its drive by wire already right.

ECU can control CVT ratio? Wow that's new. I never bothered about CVT cause I hate it with a passion.
 

gunnerzz

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gunnerzz

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So if I understand you correctly the "sports mode" is just a boost controller + throttle controller. I assume your model its drive by wire already right.

ECU can control CVT ratio? Wow that's new. I never bothered about CVT cause I hate it with a passion.
wah..u hated it so much till dont bother abt it. There are different programming too for example on the HRV it will shift to highest ratio as soon as it detect pedal lift of or cruising.It does this much quicker than the CVT on an Iriz. Newbie to CVT might mistaken it with normal autobox.

Not sure abt other make but on the Iriz the engine rev is limited in N.Newbie or haters like u will think its broken...heheheh
 

YellowFlash

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Yes but the difference in performance for my NA cars are barely noticeable so doesn't justify the price difference between the 2 Ron. Maybe I am old uncle already so butt not that sensitive anymore to such marginal difference. If true high performance sports car and turbo cars surely should have much more difference
Yea I guess unless you are going to the track, the difference may not be that noticeable. It may be more noticeable for higher hp cars. M
Nice. You that's a GRF chassis WRX STI isn't it? Since you mentioned 2.5
Yup, that's right, mine is the GRF, the 2.0 would be the GRB.

ECU already controls the CVT, right? Step on the fuel rev goes up, then slowly pick up speed until final ratio. The paddle shifters also changes the CVT ratio....
Just read up and found out that there is no fixed ratio for the CVT as it is just a pulley system and gear ratio can be electronically/artificially controlled. Learnt something new today, haha. I didn't really take note on CVT although one of my previous vehicle was on CVT.

Good article on CVT -> https://practicalmotoring.com.au/car-advice/continuously-variable-transmission-explained/

So if I understand you correctly the "sports mode" is just a boost controller + throttle controller. I assume your model its drive by wire already right.

ECU can control CVT ratio? Wow that's new. I never bothered about CVT cause I hate it with a passion.
Yea, its drive by wire. Only the much older versions were drive by cable and i heard the throttle response is definitely much better by cable.
I think the SI-Drive is more of a throttle controller rather than a boost controller but somehow by altering the throttle mapping, the boost is controlled.

Subaru SI-Drive -> https://www.greencarcongress.com/2006/04/subarus_new_sid.html
 

vr2turbo

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vr2turbo

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wah..u hated it so much till dont bother abt it. There are different programming too for example on the HRV it will shift to highest ratio as soon as it detect pedal lift of or cruising.It does this much quicker than the CVT on an Iriz. Newbie to CVT might mistaken it with normal autobox.

Not sure abt other make but on the Iriz the engine rev is limited in N.Newbie or haters like u will think its broken...heheheh
For town driving I actually like the CVT over my old 4 speed auto as 4 speed the ratio too far apart. If 6 speed auto then different story.....hhahhahah
 

RENESIS VIII

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RENESIS VIII

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Yea, its drive by wire. Only the much older versions were drive by cable and i heard the throttle response is definitely much better by cable.
I think the SI-Drive is more of a throttle controller rather than a boost controller but somehow by altering the throttle mapping, the boost is controlled.

I've heard about this too from people who had driven the latest WRX STI. Local spec 2.5 VAF chassis. Said got delay during throttle input unlike older Impreza like those GDB chassis.
 

YellowFlash

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I've heard about this too from people who had driven the latest WRX STI. Local spec 2.5 VAF chassis. Said got delay during throttle input unlike older Impreza like those GDB chassis.
I think its not that noticeable under normal driving but probably more when you really push the car. After all, today's cars are mostly driven by wire and the response of a STI or any performance cars would already supersede those of normal road cars.
 

^pomen_GTR^

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^pomen_GTR^

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haha...i can't stick to Ron 97 cause there is a high risk of engine knocking, in fact the decrease in performance is pretty obvious once i pump Ron 97. Manufacturer's recommendation is Ron 98 and above, i'd have to de-tune to safely use Ron 97.



I am not driving a SUV, driving a 2.5L turbocharged flat 4 Japanese hatchback :driver:, the premium price for fuel is part of the price to pay for performance...:laugh:

impreza v10 2.5 sti if use lower than it spells ringland! :driver:
 

6UE5t

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6UE5t

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I've heard about this too from people who had driven the latest WRX STI. Local spec 2.5 VAF chassis. Said got delay during throttle input unlike older Impreza like those GDB chassis.
Nothing that you can't fix easily with adding a cheap throttle controller. I also install one on my Mark x.
 

ixeo

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wah..u hated it so much till dont bother abt it. There are different programming too for example on the HRV it will shift to highest ratio as soon as it detect pedal lift of or cruising.It does this much quicker than the CVT on an Iriz. Newbie to CVT might mistaken it with normal autobox.

Not sure abt other make but on the Iriz the engine rev is limited in N.Newbie or haters like u will think its broken...heheheh
I don't like the "feel" and "sensation" derived from CVTs. Floor it and it goes to peak torque and it stays there and the engine just drones. My CVT experience limited to the current gen Honda City, Proton Suprima and Proton Inspira.

Automatics like the ZF 8 speed is just godlike, engagement like DSG is exhilarating. I don't understand the need for CVT's existence.
 

gunnerzz

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gunnerzz

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I don't like the "feel" and "sensation" derived from CVTs. Floor it and it goes to peak torque and it stays there and the engine just drones. My CVT experience limited to the current gen Honda City, Proton Suprima and Proton Inspira.

Automatics like the ZF 8 speed is just godlike, engagement like DSG is exhilarating. I don't understand the need for CVT's existence.
They arent built for engagement.
In some cars i think it makes the fc worst such as the preve and suprima.
They are not the future for sure as modern turbo engine are producing high twisting force which is not good for the cvt belt.

Normal autobox with more gears are the future.There are rumors that Proton is testing 5 speed autobox on the iriz. That will make me consider the iriz for future naughty car.
 

ixeo

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ixeo

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They arent built for engagement.
In some cars i think it makes the fc worst such as the preve and suprima.
They are not the future for sure as modern turbo engine are producing high twisting force which is not good for the cvt belt.

Normal autobox with more gears are the future.There are rumors that Proton is testing 5 speed autobox on the iriz. That will make me consider the iriz for future naughty car.
I think I read that for torque converters, 10 speed is the optimal ratio. More than that actually holds no benefits.
Even if non-turbo engines, the advanced NA engines by Mazda don't use CVT, still a conventional torque converter.

5 speed autobox is.. er, outdated? I think minimum should be 6 speed. That Mazda gearbox is quite fast, but not as fast as the ZF 8. Of course one is a FWD and the other is RWD. But boy, I'll choose the ZF 8 anyday over any gearbox. It is smooth when you want to cruise, and its fast as hell when you want to floor it.

DSG is clunky at low cruising speeds, although it is fast when floored. So ZF 8 is like best of both worlds.
 

vr2turbo

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vr2turbo

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If not mistaken, CVT gb is cheaper to manufacture, so take cheaper route not best route......lol
 

YellowFlash

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Nothing that you can't fix easily with adding a cheap throttle controller. I also install one on my Mark x.
There's no need for a throttle controller as the SI-Drive is like an enhance throttle controller due to it's the ability to control other variables such as the artificial gear ratio in the CVT models.
 

^pomen_GTR^

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^pomen_GTR^

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Yea, common problem for the V10... Thankfully no major issues for now but am planning to rebuild my block soon :biggrin:. You own a scooby too?

yup...classic gen.. no drive bai wayar no headache electronic... hahaha..and manual...

the SI drive change not only throttle mapping but engine mapping as well...(including boost target) thats why only on sport# mode can go higher boost....


the v10 2.0 sti even up to 1.6bar of boost in that mode if not mistaken.... for 2.5 is around 1.3bar? or 1.5 bar?
 

gunnerzz

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gunnerzz

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This is it...my 1997 Honda EX5 High Power 1997
I got this bike used in 2004 before I go to Sabah and even bring it there.
It was bone stock back then and now with added acc for convenience.
Everything is from factory...the paint, absorber,everything except the sport rim and rear box.
<a href="http://s280.photobucket.com/user/gunnerzz_8094/media/Side Right.jpg.html" target="_blank"><img src="http://i280.photobucket.com/albums/kk167/gunnerzz_8094/Side Right.jpg" border="0" alt=" photo Side Right.jpg"/></a>

Nothing to shout about...its 'just' an EX5 High Power. Its uncomfortable and not fast but will get you anywhere. Superb town commuter. Everything in the engine is stock. The carb is also stock with stock jetting.


How far it has travelled without any breakdown...except for punctured. Engine had never been rebuild just replace the gasket. I practice changing the engine oil every month as I will ride 80% from the limit on weekdays. Engine oil used is either Castrol or Shell. This bike will reach 100kmh on the speedo.



Seeing this engine cover alone will make some mech offer me to buy the bike. Its not nice as I mentioned earlier its ori since 1997.


Fuel tank is under the seat. I will let it run until the gauge is below the big red bar and fill up Rm6. The ori tool is missing..too bad.


1st 2 million unit sticker....faded but its true, that's how much they sell this thing.




Lighting and reflector...Stanley for front. The front headlight is using Osram Silverstar. Its brighter and more focus. Rear is AAP lens with Stanley bulb.



Givi Wildcat 25 box mounted on Kappa J-rack. Its used to carry my rain gear. Told u guys I ride everyday to work right...that means be it rain or shine. My helmet will be locked at my bike or left at the guardhouse. Nobody brave enough to steal security manager helmet eh?
Givi box is good but the cylinder lock is lousy. It will become stuck and hard to turn.

The rims is just normal rim and normal tire used. I ride this daily and after 4 years I encounter a puncture.
Not bad eh. I will continue riding as long as I can as its convenient and quick.

Bonus pic...Ghost rider watering the plant
 
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sweelt

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sweelt

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This is it...my 1997 Honda EX5 High Power 1997
I got this bike used in 2004 before I go to Sabah and even bring it there.
It was bone stock back then and now with added acc for convenience.
Everything is from factory...the paint, absorber,everything except the sport rim and rear box.
<a href="http://s280.photobucket.com/user/gunnerzz_8094/media/Side Right.jpg.html" target="_blank"><img src="http://i280.photobucket.com/albums/kk167/gunnerzz_8094/Side Right.jpg" border="0" alt=" photo Side Right.jpg"/></a>

Nothing to shout about...its 'just' an EX5 High Power. Its uncomfortable and not fast but will get you anywhere. Superb town commuter. Everything in the engine is stock. The carb is also stock with stock jetting.


How far it has travelled without any breakdown...except for punctured. Engine had never been rebuild just replace the gasket. I practice changing the engine oil every month as I will ride 80% from the limit on weekdays. Engine oil used is either Castrol or Shell. This bike will reach 100kmh on the speedo.



Seeing this engine cover alone will make some mech offer me to buy the bike. Its not nice as I mentioned earlier its ori since 1997.


Fuel tank is under the seat. I will let it run until the gauge is below the big red bar and fill up Rm6. The ori tool is missing..too bad.


1st 2 million unit sticker....faded but its true, that's how much they sell this thing.




Lighting and reflector...Stanley for front. The front headlight is using Osram Silverstar. Its brighter and more focus. Rear is AAP lens with Stanley bulb.



Givi Wildcat 25 box mounted on Kappa J-rack. Its used to carry my rain gear. Told u guys I ride everyday to work right...that means be it rain or shine. My helmet will be locked at my bike or left at the guardhouse. Nobody brave enough to steal security manager helmet eh?
Givi box is good but the cylinder lock is lousy. It will become stuck and hard to turn.

The rims is just normal rim and normal tire used. I ride this daily and after 4 years I encounter a puncture.
Not bad eh. I will continue riding as long as I can as its convenient and quick.

Bonus pic...Ghost rider watering the plant
Niceee....my old ex5 meter already reset 5 yrs ago.
Will update tomorrow.
Mine 1990. Pass by my late dad.
Don worry it wont breakdown prematurely as long u got service.
Consider my size, the bike really bring me up from school till married. Banyak tahan.
Why... From 1992 till 2013. One time overhaul, one cdi unit change. Thats all. Minor breakdown cant avoid lah.
Now i only ride around taman, go shops.
Told my wife i will walk back if go pasar malam. lol...
 
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vr2turbo

Beyond 20,000 RPM!
Helmet Clan
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vr2turbo

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Niceee....my old ex5 meter already reset 5 yrs ago.
Will update tomorrow.
Mine 1990. Pass by my late dad.
Don worry it wont breakdown prematurely as long u got service.
Consider my size, the bike really bring me up from school till married. Banyak tahan
I am surprised it could ferry you around. You must be lighter in your younger days. I never own cubchai before. Mine was Honda CB125, then the Suzuki Ram Air GT250....lol
 

gunnerzz

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gunnerzz

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Told my wife i will walk back if go pasar malam. lol...
This is super true.
I only used bike to commute to work and go to speedmart. If i go to speedmart i will park and survey the surrounding to see if there is anyone not suppose to be there. If satisfy only i will went in.

If i stopped by any shop on the way to work i will make sure i can see my bike from where i am sitting. Those people sitting alone at the table nearest to the roadside and sat facing the road are riders observing their rides...hahaha.
If mamak shop then its better as go off from bike and straightaway sit down.

Last time when i'm still smoking, i even finishes 1 stick of cigarette while still on the bike just to be sure its safe to park. That time i went to giant. When i went in it was a grab and go situation..no window shopping. Now i know where 7e got the name for their bread range...its specifically made for riders with valuable bikes..'Grab n Go'.
 
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nw111

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Porsche 1999, Carrera 996 NA 3.6L Boxer auto.

City driving 8-9km/L and highway can get easily 13/14km/L

RON97 only. :P
13/14km/l on highway? Hebat..... I can only get 10-13km/l from (loaner car also) 996 & 997 (probably driving too fast :P).

BTW 911s are actually a good car for daily (in the high-end sportscars segment).
 
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YellowFlash

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yup...classic gen.. no drive bai wayar no headache electronic... hahaha..and manual...

the SI drive change not only throttle mapping but engine mapping as well...(including boost target) thats why only on sport# mode can go higher boost....


the v10 2.0 sti even up to 1.6bar of boost in that mode if not mistaken.... for 2.5 is around 1.3bar? or 1.5 bar?
Oh, I really didn’t know the SI drive changed the engine mapping as I couldn’t find any information online. Maybe I should just read my owner’s manual. Haha. I think it’s around 1.3.. spiking at 1.5 bar.
 

Izso

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Izso

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13/14km/l on highway? Hebat..... I can only get 10-13km/l from (loaner car also) 996 & 997 (probably driving too fast :P).

BTW 911s are actually a good car for daily (in the high-end sportscars segment).
Hard to control speed with a car like the 996/997... but if you do it does pretty amazing MPG.