GTi isn't it better with 2.2" piping?
Same with MIVEC? MIVEC engines best is around 2.2"/2.3"
bro if u did port and polish or any modification on your gti 2.2" is good
same engine code but different functional,Gti dont have "MIVEC"
as i mantion what dont have mivec????sure got ppl gorek kepala
Mivec(Mitsubishi Innovative Valve-timing-and-lift Electronic Control) is Similia like:
VTEC(which stands forVariable Valve Timing and Lift Electronic Control),original 4G93P only 1.8 twincam they dont have this function so 2.2" for original 4G93P is too over
My car's a Satria GTi with Evo 2 engine. Currently piping is 2.5" to nanas, then 3" all the way down, no mid box or bullet, to a HKS Hi-Power Exhaust without the removable silencer.
I wanna make it more silent, without sacrificing too much on power. There are 2 ways I'm gonna do it:
1) Replace HKS Hi-Power with Tanabe Medallion S-Flow
Well, you got high cams,open pod k&n, it is a very wise choice u have there in modding exhaust system.
Your ride has a good head power but no 'tail'. Stock muffler is very restrictive having small inlet piping size, big blocks which creates back pressure which you dont need it. If you want good high end power with low end/middle end increased, get a good 4-1 extractor, change 2" full piping, take off CATCON, take off the twinpipe sflow muffler and replace it with a nice good 2" straight flow muffler which means single exhaust system. (Juz my 2 cents, based on the experience of modding few GTI's exhaust).
Yes, i can feel the backpressure Blocking the exhaust flow. Sort of a restricted feel. Eventhough the intake sound from the open pod is quite loud!. The best thing is, its silent !
Thats why i came out with the idea to modify the exhaust system. Just an idea, but need your feedback from it.
Kweng, a 4-1 extractor help to unrestrict the flow, i bet it shall boost-up ,But will i lost low end power? What is the feel would be if i were to use a 4-2-1 compared to a 4-1 extractor?
Nowdays is hard to find an aftermarket muffler simmilar style as Gti's (Twin tailpipe).....
My car's a Satria GTi with Evo 2 engine. Currently piping is 2.5" to nanas, then 3" all the way down, no mid box or bullet, to a HKS Hi-Power Exhaust without the removable silencer.
I wanna make it more silent, without sacrificing too much on power. There are 2 ways I'm gonna do it:
1) Replace HKS Hi-Power with Tanabe Medallion S-Flow
2) Add a middle bullet, don't change the muffler
Which one would be less noisy?
2) Add a middle bullet, don't change the muffler(reduce 30% noise,power still maintain)
My car's a Satria GTi with Evo 2 engine. Currently piping is 2.5" to nanas, then 3" all the way down, no mid box or bullet, to a HKS Hi-Power Exhaust without the removable silencer.
I wanna make it more silent, without sacrificing too much on power. There are 2 ways I'm gonna do it:
1) Replace HKS Hi-Power with Tanabe Medallion S-Flow
2) Add a middle bullet, don't change the muffler
Which one would be less noisy?
Sound wise,I think the best in reducing the noise would be getting Tanabe Medallion S-flow. Tanabe S-flow got very sufficient bass there and won't too loud. I am one of Tanabe lover too. How much u getting for that sflow?? from kedai potong?? if yes, gotta becareful ya...
If you want to maintain power and reduce noise also, i agree with kent..bullet is the choice..
Quote:
Originally Posted by Massive_InfusioN
Yes, i can feel the backpressure Blocking the exhaust flow. Sort of a restricted feel. Eventhough the intake sound from the open pod is quite loud!. The best thing is, its silent !
Thats why i came out with the idea to modify the exhaust system. Just an idea, but need your feedback from it.
Kweng, a 4-1 extractor help to unrestrict the flow, i bet it shall boost-up ,But will i lost low end power? What is the feel would be if i were to use a 4-2-1 compared to a 4-1 extractor?
Nowdays is hard to find an aftermarket muffler simmilar style as Gti's (Twin tailpipe).....
Actually extractors (421 or 41) unrestrict the flow differently. Firstly 4-2-1, just imagine when we accelerate from idle, the gas flows from 4 pipes to 2 pipes then to 1 pipe. Common sense will tell you that 4 pipes to 2 pipes is better flow than having 4 pipes to 1 pipe. So, 421 will give better low end torque than 4-1. get it? just my 2 cents..if im mistaken, anyone pls correct me, thanks !
i think i miss out some word,4-1 for wira/satria even gti all are not recommeded..
1.original already 4-1.
usualy why ppl change to 4-1,it because of those ppl like using
VVT-I,Vtec,Mivec,all thing hight rev engine or for track car purpose,because they want to keep the hight rev,as we know most of the track car always have to stay on 5k-8k rpm...
so for street car,like what we playing 4-2-1 is the most suitable
because:4-2-1 improved the pick up and mid,also improved the torque,during street usage 4-2-1 is always lightest then 4-1
another issue,original extractor normaly is made by lousy besi buruk,
1.heavy
2.inlet not smooth enought in the same time the airflow is not smooth enought
so maybe they have to change to aftermarket 4-1....
but untill now i also can't find out what is the pro for 4-1 on street using...
if track car maybe it because of what i mantion keep hight rpm...
the rest i really dunno why 4-1...any expert to answer pls
