Figured I'd add a half decent picture... with a clean car.

 

why didnt u just go with a test pipe? im assuming because of emissions. does the HFC flow more effecient air than a test pipe?

 

Well obviously a test pipe will make more power than a HFC... but a HFC should pass emissions testing, while a test pipe never would. HFC's are a middle ground... better for a street driven car, too, IMO... I'm no tree hugger, but I don't mind giving up some power to reduce my emissions by such a huge amount, either.

 

all makes sense. well here in arkansas there are no emissions so im sticking with a test pipe and saving a lot of money