I have comptech exhaust system on my car but it seems a little TOO quiet and was wondering that anyone out there would know anything about the atlp race pipe added on:
-how much louder it would make the car?
-any check engine lights going to be lighted?
-better or worse gas mileage?
-and last but not least more or less hp?

Thanks,

 

precat deletes will make your car sound wicked! i too have the comptech exhaust with precat deletes and ATLP pipe. there is no other exhaust our there, that will match the sound of this combo

 

precat deletes?
would comptech and atlp race pipe be good?

 

you'll get a better sound and gain more performance with the precat deletes and stock 3rd cat.