search!!!!1!
this has been covered time and time again

but,
aem dryflow cone filter, dinan chip, exhaust done up with a glass pack for a cat dynomax super turbo muffler, short shift kit done with a z3 shifter, medium cased 4.10LSD, and im line locking 2nd gear, and scratching 3rd.
leave your timing alone. and dinan chips are cheaper, customer service is geat, and exactly the same hp gains. leave your tb the same, 2.1L metric mechanic ralley engines use oem tb.
oh and lest i forget a DROP, and a iS lip
