I hv 1.5 wira sedan manual,would like to modify exhaust pipe
1)more pickup especially when going uphill,however max speed not so important
2)Silent Vrroooom racing sound
3)Save in petrol???

Any recommendation in exhaust combination?
Price?
Brand to take?
Place?

Hi,

Just did the 4-2-1 extractor and midbox in Wei Yip in Cheras.
I leave the piping /muffler later on do.
Why is Wei Yip not good har...wondering..are they cheating?

I change my exhaust system.
However still feel low pick-up power.
So I wanted to change the air filter to improve performance.
Any idea?
My car is 1.5 Wira manual.
4-2-1 ext with midbox,1.7" piping and straight-muffler.
Pls advice!

i got a 4-2-1 extractor, 1 bullet, 1 mid-box,s-flow muffler.
wondering if removing the mid-box will increase power?
i heard mid-box got no effect except silencer?
i thinking of replacing mid-box with another bullet..so means total=2 bullet..the power will be better & more fuel economic?
Go uphill or Genting also better?

my car dont hv..i think wira 1.5

my design is sflow===midbox===bullet===4-2-1.
the catcon could hv been remove during the installation