if u dun prefer for trial and error...try to survey hotbits...
not sure if they got it though...but dun expect to much from an exhaust upgrade...
u might get disappointed...esp on auto cars...huhuhu...
p/s: for those who didn't know that pictures can be in bigger view,
Google Chrome users: right click on image> Open Image in New Tab
IE users: right click on image > open in new window/tab
safari and mozilla firefox is slightly the same.
You get the picture la =D
Your critics and comments are most welcomed
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