sounds stupid, but idk, i have 91 sunbird, TBI, can i replace my fuel injector, if so how many are there, and where is it located? im more curious than anything

Yes, there are larger injectors available that will fit your car. The injector is located in the throttle body under the air cleaner housing. You can also increase fuel pressure to get more fuel. But if you're looking for more power you'll need a way to get more air through the engine before increasing the size of the injector.

-->Slow

ok, lol that was my next question, how would i achieve more air? because it is a tbi, and the air "box" is similar to those on a carborated car

Geez... it's a bit tough with that one. The cam from a turbo car or a 92 and later pfi engine will help some. If you want to play with porting the head, maybe you'll have good luck. I decided to switch to a 94 engine. It's a bunch of work though. It's probably just as easy to switch to a V6 or a quad 4 from a Beretta and you'll end up with more power.

-->Slow