i got a 03 gcoupe at transmittion, stock, had it for about 4 years, looking to do somework. as a beginner what can i do to add some power but not break the bank at the same time. ive heard at tranmittions can be tricky to work with. somebody help me out.

 

5AT.. I do not know.. but if you have a 6MT I would of told you to get an aftermarket clutch/light flywheel for more powa!..

 

Get a valvebody modification and a trans cooler.

 

If you are looking simply to upgrade the tranny then do the VB first (go with GTM).

Trans cooler 2nd.

You could do a full rebuild for higher strength as well.