Got few way,
1. tipical way is de-cat,change end-box, stright thru pipe(of-cos
change bigger size eg:3")
2. Extrator also change(sound better cos better air-flow)
3. Do mandual bending of exhaust
4. The cut & weld piece by piece to form an angle instead of
mandual bend.Tat should sound best as heard from friend cos i not
using tat.
Open-pod filter(although is dirty but more air).Use better spark
plug, or make ur mixture rich to get backfire effect(the piack
sound)...
U wan even better, Do a side plant, meaning half way(at ur cat
convertor) there, make a opening, the sound come out is very
loud....
(but hv to make another throttle body to make it 2 way..dunno how
to explane)
Void warrenty is MAY, if u go back
servecing,the see may void you,also got some after change exhaust,
the sensor will make a "check light on"
When go inspection, either change back to original exhaust or u can
go for those real expensive approved by LTA exhaust system(count by
$k)
