treynor
Enthusiast
The year matters, of course, but your friend is correct. I strongly recommend you start by getting headers & high-flow cats on your car, which will give you a substantial gain all by themselves.
On my '01 RT/10, my power curve did this when I went from headers + cats + catback (blue) to the above + heads & roller rockers (red):
YMMV, of course...
On my '01 RT/10, my power curve did this when I went from headers + cats + catback (blue) to the above + heads & roller rockers (red):
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YMMV, of course...