Are you going for the land speed record?
Of course your car will have faster 0-60, 60 ft, and 1/4 mile times with more power.
Best bangs for the buck are:
1. K&N panel filters plus smoother intake tubes (cobb or HPS).
2. ebay test pipes (get ones with extra long defoulers to minimize chance of CEL; can also cram steel wool in bung to filter exhaust gasses further)
3. A better flowing Y-pipe, or pick up a used Nismo cat back exhaust (OEM or or S-tune version).
4. Osirus uprev tune to bring it all together.
That will bring to around or just over 300 whp on a dynojet (typically begining around 273 +/-5 ), and should cost you under or around $1500 - 2000 in total.
Happy modding
