if i got K&N panel air-filter , a full 2" stainless steel exhuast system mandrel bent extractors hi flow cat and 4.5" s/s muffler, cams (not sure what i should get to get highest performance), and an ecu(same deal with this) tuned for my 99 civic coupe VTi-R currently at 118kw?(i think it is)
how much hp would i gain approximately ??
any other mods i could do to increase hp ??
thanx
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