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crower75

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Mar 15, 2004
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hattech-v said:
ur ecu need to be tuned to suite to ur engine mods...
mugen chip not necessarily make ur car power in instant...
yesssss.............mugen chip can either make your car :-

(a) go slower; or
(b) not moving at all (engine KABOOOMM)

due to A/F not setup properly................
 

akuma

3,000 RPM
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Jul 16, 2005
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weight..weight..thn drive EF mah better lor?i love my EF7.5...

xxxx,
u know wat i'm gonna say...SHARAP!!!!
 

Enthusiast

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Oct 10, 2005
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i see.....tuning a/f must be damn important then.....the last i checked a/f on my apexi turbo timer was 10.0 while crusing.....doesn't look like a good number.......coz the tt sometimes shows the ratio but sometimes doesn't....i think my o2 sensor siao siao adi........10.0 is running too rich or too lean?

well if it's true that safc-II is more than enough for my settings then i will be getting it this saturday already......go dyno tune in links rm150 rite?

and my extractor....im not sure where is primary bend where is secondary bend......but the kemek part is right below the oil pan there......the whole strect there kena ketuk adi the upper 2 pipes.......around 17 inch in length i think........affect much????
 

akuma

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dyno TUNE for RM150?weh,can get meh?RM150 4 a simple dyno run more like it ler.....dyno TUNE wor?anyway,cruising @ 10.0?madness....ur full tank can go how far?200km?super rich ler...ppl WOT oso preferably ard 12.X onry ler.....

n yes,EF7.5=auto.. =)
 

shiroitenshi

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Apr 18, 2006
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akuma said:
dyno TUNE for RM150?weh,can get meh?RM150 4 a simple dyno run more like it ler.....dyno TUNE wor?anyway,cruising @ 10.0?madness....ur full tank can go how far?200km?super rich ler...ppl WOT oso preferably ard 12.X onry ler.....

n yes,EF7.5=auto.. =)
Your WOT 12.xx only ah? (O_o)
 

hattech-v

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Oct 10, 2004
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Enthusiast said:
i see.....tuning a/f must be damn important then.....the last i checked a/f on my apexi turbo timer was 10.0 while crusing.....doesn't look like a good number.......coz the tt sometimes shows the ratio but sometimes doesn't....i think my o2 sensor siao siao adi........10.0 is running too rich or too lean?

well if it's true that safc-II is more than enough for my settings then i will be getting it this saturday already......go dyno tune in links rm150 rite?

and my extractor....im not sure where is primary bend where is secondary bend......but the kemek part is right below the oil pan there......the whole strect there kena ketuk adi the upper 2 pipes.......around 17 inch in length i think........affect much????
10.0 on cruising is super rich....
 

Oderf

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Jul 27, 2005
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yeah bro...go find some piggyback to tune ur car...looks like the tuning part is sux....aso, u r running a bit low compression with tht stock GSR pistons....better get P30 if not PCT pistons ler.........cheers...
 

akuma

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Jul 16, 2005
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shiro,
wats wrong w 12.xx on WOT?mine stock small V only ler...more thn enuff ler.....super tuned engines might need 10.xx ler...me no nid....12.xx is rich enuff 4 me.....urs ler?
 

Enthusiast

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Oct 10, 2005
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oh dear.......thats like fckn bad news man.......only when i release the throttle near stop only the a/f went down to 11 - 12 - 13 - 14..........my rm50 can go around 230.......

compression part is funny........coz when i went to avant garde eric tested my comp..........and it was 250 psi on all four consistently............+_+.............make me headache lar wei.............how to explain this? i tot 250 is considered high?
 

zamrioo2

Known Member
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May 2, 2005
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Enthusiast said:
i see.....tuning a/f must be damn important then.....the last i checked a/f on my apexi turbo timer was 10.0 while crusing.....doesn't look like a good number.......coz the tt sometimes shows the ratio but sometimes doesn't....i think my o2 sensor siao siao adi........10.0 is running too rich or too lean?

well if it's true that safc-II is more than enough for my settings then i will be getting it this saturday already......go dyno tune in links rm150 rite?

and my extractor....im not sure where is primary bend where is secondary bend......but the kemek part is right below the oil pan there......the whole strect there kena ketuk adi the upper 2 pipes.......around 17 inch in length i think........affect much????
better get the oem xtractor back i guess... vafc2 is gud enough if do properly tuning... too many factors must be considered while marking... for ur satisfaction better start while cruising in 1st gear... to me, so4 juz suitable for 'lawa-lawa' je... :_:
 

Enthusiast

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Oct 10, 2005
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using apex'i turbo timer...but shud be inaccurate.........yeah 250 quite high tats y im suspecting extractor and tuning........how bout clutch? if clutch tak makan then car will be sluggish too?
 

Enthusiast

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Oct 10, 2005
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zamrioo2 said:
better get the oem xtractor back i guess... vafc2 is gud enough if do properly tuning... too many factors must be considered while marking... for ur satisfaction better start while cruising in 1st gear... to me, so4 juz suitable for 'lawa-lawa' je... :_:

wah...ur lawa lawa make alot of us Terasa WEi!!!
 

shiroitenshi

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Apr 18, 2006
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Err...just got a reality check.....

from what I know.. unless you have a wideband 02 sensor installed in your car... the stock sensor is only able to measure a small range.. and if I'm not wrong.. the range is very small

which means that your AFR meter should be reading wrong.. check the manual for the connections.. does it say that it is supposed to be connected to the narrowband sensor? or the wideband type sensor? Wideband is 5V... and narrowband.. well... I forgot.

here's a link.. http://www.pgmfi.org/twiki/bin/view/Library/WideBandO2

now that my memory is refreshed by the above link.. it would seem that the narrowband can only read the range of 14-15 A/F Ratio.. so check again which sensor you're using.

If you're running narrowband.. that's the stock sensor that is on the extractor's end (OBD1/2) or if you're running earlier gens (OBD0), it's on one of the primary bends off the extractor. (stock EF, anyone?)

If you're running a seperate wideband.. it's usually mounted on the straight pipe (where the cat used to be).. since the ECU requires a narrowband... usually people leave the damn thing alone (unless you got those expensive a/f stuff that gives an output to the ecu)

My guess is.. that reading you got wasn't accurate.. or if you spliced the wire off the stock narrowband 02 sensor.. it probably whacked up the readings... both to your turbo timer, and to your ECU..

Then again.. I'm not the one looking at your engine.. have a mechanic take a look and let us know the results.
 

zamrioo2

Known Member
Senior Member
May 2, 2005
180
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Enthusiast said:
wah...ur lawa lawa make alot of us Terasa WEi!!!
it's true kn...? hehe... joking la bro... so4 is similar to evo series... cool to jln2, hot to floor... :shades_smile:
 

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