I didn't dyno yet, not to after I get some much needed part in my engine right first.

 

with just a cat back you wont get much of a difference and the heads on a 3.4 are very restrictive so the headers won't do much for power but it all adds sounds the most. The full exhaust will make it sound deeper, but probalby around 30 hp increaese, just because the engine doesn't have great flow to it.

 

Stock headers with only a cat will surprise you how deep it is. Take off stock muffler, run some pipe to the back (make it look nice tho) and slap in a $100 Mangaflow highflow cat.

idel to 4k will make you think you're in a V8. I'll try to get my friend to film it and post it on youtube so you guys can hear it. Its really nice. I should get my car back monday, also.

 

post the link when you get it