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Questions on ZX3 2.3L speed?

1K views 5 replies 6 participants last post by  archie 
#1 ·
I have a 2004 ZX3 and I have the focussport intake, I put a magnaflow exhaust on it. Is there anything i can do thats no too expensive that will add more horsepower? I know focussport will have the PZEV flash for the computer soon but I am curious if there is anything else I can do.
 
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