wanna ask, if change muffler only and everything else remain stock, what is the benefit i get? better performance?

changing only muffler doesn't do justice

from s-flow to abit larger straight flow muffler... u get very minimal improvement in performance... which is mainly at the higher rpm range... lower rpm range feels nothing different...

my plan is since the blm stock muffler is quite hideous, i wanna change it to a better looking muffler...twinpipe like perdana muffler...haha

If I want to change to open pod, must I change the exshaut system too? Because my fren's myvi, he change to open pod with stock exshaut, his car feel more underpower, he said it's becoz the exhaust system is too tiny for the open pod...

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Added on January 18, 2009, 2:35 pmJust remove the U snrokle without replacing it with anything?

This post has been edited by DaViDcHiN: Jan 18 2009, 02:35 PM

open pod with stock exhaust....the setup doesn't match
Just get a replacement hi flow drop in filter

Agree..Plus using open pod must use heatshield+cai
I end up switch back using k&n drop-in

if mod sure intake and exhaust together la... imagine u eat so much but didnt go toilet for 1 week... all stuck inside, do u feel well after dat??...

yea... the u-snorkle is kinda small and restrictive...

guys wanna ask tis settin okie anot on 4g13p

4-2-1 p.z --> 2" pipe --> bullet mid size --> 1.75" pipe --> 2.5" tanabe straight

bad for low end torque... 2" and 2.5" abit too big...

try maintain 1.8" all the way.... end muffler can go for 2" max... any higher can la, u get what u install...

i'm using standard waja 4g18.
i just wanna change to open pot/high performance air filter n 4-2-1 extractor n standard s-flow ekzos.does this increase car performance?

Yup..there will be slightly increase in performance
But recommend u use high flow performance drop in rather than open pod

this would be my recommendation for street use car...

drop-in k&n air filter
tuned length 4-2-1 extractor
midbullet replace ur catcon
1.8"~2" inlet s-flow muffler

better still if u replace the piping with a little larger ones... this depends on ur budget...

Agree..2 inch piping is max for 4g18p

hello guys..need advice for my auto 1.3 myvi..
currently my mod is K&N drop in,4-1 hotbits extractor,1.6inch piping and at the back got 1 sflow box before the last straight flow muffler..
before this i put a twisted centre bullet but my topspeed drop a lot(140kmh only)..
so i remove the bullet and make it straight from the extractor until the sflow box and the straight muffler..
the top speed come back and can reach until 170kmh at the earlier..
but after two weeks running on this mod i feel my car a bit underpower..doesnt feel like earlier after i remove the twisted bullet.
fren of mine,auto also but with stock condition, only on 17inch rim can easily overtake me..
need some of the 'taiko' advice here..
thanx!

losing that back pressure, giving a more free flow, do affect that bit of lower end torque... for small displacement engines, that bit of difference can make alot of difference..

I am also using 2" max for my 4G92p

HotBits 4-2-1 extractor
2" piping mendrel bend + midbullet replaces catcon
S-flow muffler, 2" inlet and 2" outlet

KAo tim, simple setup, noise is very very much softer than my previous straight flow

This post has been edited by shinjite: Jan 25 2009, 03:48 PM

2" for 4g92 MIVEC is jz enough....

Sorry mine ain't a MIVEC XD
If it is, 2.3" liao

Bro,how much for that 2 inch piping mendrel bend??