Help- Rough Mod HP gains from chip, header, downpipe, etc..????
#1
We soon to be lucky USA folks will be getting the same (basically) WRX as the UK.
Anyone have some rough numbers for some mods?
I just want mid 13's or so for the ¼ (not that I am a dragracer).
thanks in advance...
Anyone have some rough numbers for some mods?
I just want mid 13's or so for the ¼ (not that I am a dragracer).
thanks in advance...
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