I have invidia g200 exhaust, intake, spacer... those type of light mods and i want to make the car sound louder and stronger... I know that testpipes are one thing to do but the are tough to get a hold of, so I am wondering what other mods (price within reason) I can do to gain hp and gain some sick sound!

 

for sick sound, take headers off. Prepare for ears to bleed.

 

Generally, any modification which allows more air into the engine, and allows the air to exit faster, is potential for horsepower gains.

 

Hmm? Judging from what you already have, looks like you only have a few choices unless you're willing to change what you already have:

[1] Testpipes
[2] HF Cats
[3] Headers

Pricewise, I'd stick with getting testpipes or HF Cats. The price for labor alone on the installation of headers would put a big dent in your wallet.

 

It will be so fracking loud that I'll buy you some headers to cover it