Help on my exhaust

[spyderpact]

I want to upgrade my exhaust because I have the cheap plastic stock one, I dont know what to get I got abotu 50 bux so any ideas also I have an engine header do you think i should change that as well? One more question my car dosent look like it goes as fast as it should sometimes whats the problem? thanks fo rat least takeing the time to read this and hopfully we can get some answers

 

[drummerjamesh]

1 what kind of car do you have?
2...if its new it could still be to rich, make sure the air fliter is not some how in incorrectly so it will get a lot a airflow, and make sure your throttle is opeaning all theway

 

[spyderpact]

sry i have a rs4 3 rtr i bought it used and I've been useing it a while now about a month so ya just got some money to upgrade everythings stock and ya i think i do need a new airfilter mines getts dirty to easy i think its the foam piece but anyway are there any good exhausts?