loudest exhaust system

[kk13]

So KK, made up your mind already?

No la bro, still thinking abt it..saw my mechanic today, he said its possible to do it with a funnel at the end so it looks better..a 3 inch pipe sticking out the back isn't exactly the pretties thing on a car..he said it will be very loud and the sound might get abit anoying after a while..so considering all this also...dun wana get always stopped by the cops for coffee money also rite :hmmmm:

Plus depends on the price also..JFA quoted me 750 just the pipe no funnel...my machanic said he'll get back to me with the price...so we shall see la...kinda 50-50 now

Bump:

kk13,

3 inch straight pipes are not road legal in most parts of the world due to noise and emissions. And they are not neighbour friendly - they could hear you a mile away.

Turbo-charged race engines use straight pipes - the lack of back-pressure means that the exhaust can flow freely right through the turbo improving available power at the upper end of the rev range. I am told that low-end torque supposedly suffers but this being a turbo engine, I can't really imagine why.

This is not the same for most NA engines.

Edit: please note that large straight pipes do not increase power. The power output of your engine is still the same. It merely makes more power available as less energy is required to overcome back-pressure - you free up maybe 5HP at most :)

Thanks for the info savahn!

will it have any effect on my engine though? ..eg. will it weaken it or cause problems in the future?

Also, I know a straight pipe would be loud but how would the sound be like?

will it be high pitched or low? don't really want it to sound like those straight piped wira's running around..

 

[savahn]

No measurable affect on your engine's reliability.

sounds... LOUD. The above clips give you an approximate sound, it is a grumbling kind of sound. Its interesting to note that the sound is similar to V8 engine rumble. If you put on a muffler, the pitch is lowered and less harsh. Cats and pre-silencers will reduce the noise level.

The pitch depends on the steel and thickness you use for the pipe - use above vids for reference The thinner the pipe, the more vibration and harshness and higher pitch. Other small things like whether the pipes are crush or mendrel bent also count. How it sounds is really a matter of preference.

 

[kk13]

so i could have a cat with a straight pipe..cause i want it louder but not that ridiculous uncontrollable annoying sound...so would probably try a cat + straight pipe...or maybe straight pipe with muffler...but I'm sure the first option would be louder right?

was reading up on how turbo engine's don't need back pressure so the engine should be fine i hope...as for the exhaust note, i hope its not too high pitched or vibrates too much...will try asking for a thick pipe...any idea on the thickness it should be?

will it also cause the whole car to vibrate badly? or just a bit?

 

[savahn]

Notice: When I mentioned about the thickness of the pipe, I was talking about the pipe's walls, not the diameter of the pipe.

kk13,

If your exhaust works fine, dont change it. You can get hi-flow 3inch cats tho they tend to be quite old - I got one from Ah Choy a few years ago for my FC but have since changed to 2 inch twin-pipes... coz I think twin pipes look more cool :p

A decision that I regret since the exhaust specialist didnt do the job up to my standards and then didnt give me back my old pipes - they already "threw it away" which pissed me off coz my old pipes worked perfectly fine and its hard to find that 3inch cat. I also had 2 pre-silencers on that old 3inch pipe but it still made so much goddam noise.

Just ask for SUS 303 stainless steel to be used if possible. Don't worry about the thickness coz the exhaust "specialists" in Malaysia dont know dick about this and will use the pipes they have in stock which is usually 301 to 303 stainless steel.

And your whole car will not vibrate because of the exhaust noise.

 

[TitanRev]

KK, I think if straight pipe. Your low end will suffer even if it's a TC car so during low rpm before your turbo kick in the drive will suck....

 

[savahn]

Low end torque has always been mentioned regarding large straight pipes. Please note that this theory is valid for NA cars. AND in reference to moving from a complete stop such as at red-lights.

If this is such a problem, the simple solution is to rev it at 4k and then dump the clutch on green. A bit of wheel spin and you will be off in a flash... low end torque solved... just imagine Vin Diesel in a '78 Chrysler Plymouth at your side for an added effect.

 

[khoyos]

what about bridgeport+straight pipe? hehehe

 

[kk13]

Thanks guys..

I spoke to my mechanic today...my pipe is 3 inch..told him i wanted to leave my cat there (its quite a small cat)...then after that have a straight pipe into a 4 inch cone...

how loud do u think this will be?

do you think i'll get into trouble with the cops much?

I'm not looking for crazy loud...just louder...currently my 3 inch + small cat + HKS muffler isn't really that loud...but it sounds nice...so I'm still thinking if I should do it...the exhaust now is a HKS supper charger or sumthin like that...but i'm sure its not a super dragger...

Bump:

what about bridgeport+straight pipe? hehehe

yeah straight pipe out the side of the car rite...lol

 

[philip_nst]

hks super dragger is not loud(last time i use),now i am using apexi ps revolution (valve controls)
idealing is very queit, rpm 3000 to 5000 is like subaru sound but hight rpm is like vtec sound (very loud)

 

[angrysnail]

How much u sell ur hks?..i though it very loud one..DRAGGER..

 

[kk13]

hks super dragger is not loud(last time i use),now i am using apexi ps revolution (valve controls)
idealing is very queit, rpm 3000 to 5000 is like subaru sound but hight rpm is like vtec sound (very loud)

yeah correct bro...before this everyone said HKS Super Dragger dam loud...so i installed it...but i saw my friends rx7, he has an Apexi...louder then mine!

But his the sound is low...mine is higher, especially when your accelerate...the sound is nicer...but not that loud...

Bump:

How much u sell ur hks?..i though it very loud one..DRAGGER..

I don't think I'll sell it for now la bro...see if i install this how much problems I'll have with the cops n jpj...lol...if too much then change back la...but will see how it goes...

 

[angrysnail]

now i already scared to mod my exhaust dat loud..

looking for bassy2 one..but don't have a choice yet..:stupid:

 

[savahn]

Thanks guys..

...my pipe is 3 inch..

O'rly? Heheh

Have fun experimenting. Someone once mentioned that HKS is always noisier than Apexi mufflers. I really have no idea.

Bump:

Thanks guys..

...my pipe is 3 inch..

O'rly? Heheh

Have fun experimenting. I can't appreciate noise so nothing much to add.

 

[kk13]

now i already scared to mod my exhaust dat loud..

looking for bassy2 one..but don't have a choice yet..:stupid:

no la, but depends on how often u drive n where u drive also...like me...i dun drive it that much plus normally arun my area onli...so abit safe la...anyways if i get caught will let u guys know! :shot:

if u want bassy so far the best one i've heard is Apexi...with 3.5 inch pipe...maybe u can ask the other members here what they have...sure they can advise u



Bump:

O'rly? Heheh

Have fun experimenting. Someone once mentioned that HKS is always noisier than Apexi mufflers. I really have no idea.

Bump:

O'rly? Heheh

Have fun experimenting. I can't appreciate noise so nothing much to add.

Yeah when I changed mine is sounded more high pitched...so u don't like noise huh...just curious..what exhaust are you running?

 

[pioneer411]

make straight pipe 1st la.. Try few day or week then u baru add muffler also ok
Ma.. Then cat or presilencer.. Use bracket is best la.. U suka suka can buka change la.. 2 bolt type or 4 bolt bracket easy la.. My car I also make side pipe ma.. When I
Test car with friend I change to side pipe.. When
Nrmal day just plug back the pipe .. If I use side
Pipe that time .. The muffler still attach behind, just me depan
Got one bracket so I can plug and play the side pipe

Hahaha this is my way la maybe ngam
U also hahaha

 

[kk13]

make straight pipe 1st la.. Try few day or week then u baru add muffler also ok
Ma.. Then cat or presilencer.. Use bracket is best la.. U suka suka can buka change la.. 2 bolt type or 4 bolt bracket easy la.. My car I also make side pipe ma.. When I
Test car with friend I change to side pipe.. When
Nrmal day just plug back the pipe .. If I use side
Pipe that time .. The muffler still attach behind, just me depan
Got one bracket so I can plug and play the side pipe

Hahaha this is my way la maybe ngam
U also hahaha

u plug n play side pipe? ...that means u do yourself?...like lift up the car and change it your self?

what model car are you driving?

 

[savahn]

I'm using a 2inch down-pipe, split Y to a pair of HKS clone mufflers.

"Clone" = crap

I am not satisfied with the work, the pipe is very badly done with too much welding. And the "exhaust specialist" used glass fibre wool in the mufflers instead of steel wool. Suffice to say that my nice and hot rotary burnt out all the wool in a few days.

 

[philip_nst]

sorry bro , i don think i wan to sell, bcos i will put it at spare
http://www.youtube.com/watch?v=O3BGXo61gIs
let u all listen this is apexi ps revolution from my car

 

[kk13]

I'm using a 2inch down-pipe, split Y to a pair of HKS clone mufflers.

"Clone" = crap

I am not satisfied with the work, the pipe is very badly done with too much welding. And the "exhaust specialist" used glass fibre wool in the mufflers instead of steel wool. Suffice to say that my nice and hot rotary burnt out all the wool in a few days.

No cat? ...and not much sound?

Bump:

I'm using a 2inch down-pipe, split Y to a pair of HKS clone mufflers.

"Clone" = crap

I am not satisfied with the work, the pipe is very badly done with too much welding. And the "exhaust specialist" used glass fibre wool in the mufflers instead of steel wool. Suffice to say that my nice and hot rotary burnt out all the wool in a few days.

No cat? ...and not much sound?

Bump:

sorry bro , i don think i wan to sell, bcos i will put it at spare
http://www.youtube.com/watch?v=O3BGXo61gIs
let u all listen this is apexi ps revolution from my car

Sounds louder then my HKS. Nice wing u have on your car also...dam wide!

So your planing on changing your exhaust? keeping this as a spare?

 

[TitanRev]

Nice wing....looks very huge....Nice sound too..