So... I got a GT w/
Headers
ONE high flow cat (instead of 3)
Invidia Cat back
Ca intake...and
shoks/struts and springs

So I want to know what else should i do? Tune?
How much hp am I running about?

My check engine light is on cuz I'm missing 2 cats
Should I do anything about that?

 

maybe 5 above stock...

 

he is make more than 5HP sebba. A GT with headers back exhaust will dyno around 170WHP(which is more than 5HP)with a SAFCII tuned it will only net you like 10HP.

 

So your car is maybe.. what.. 8 above stock?

 

You need to get a tatrix cable and download the flash software, you can get 10 hp on a stock gt if you tune it right, also for your SES light, go to your auto parts store and get spark plug gappers. Drill the center of one out with a 1/2 inch bit and thread them together, now put this between your rear o2 sensor and the exhaust bung, like a spacer, reset your ecu and your ses light should go off.

 

isimon77, i DO hope that wasnt a hit on me.

 

Hahahahahahah

uh but no, dont roll that way sebba.