Test Pipes

I have precat pipes and hyperflow cats. The precat pipes are made by hyperflow also

 

No, test pipes just replace the catalytic convertor. They do make "pre-cat" test pipes (hyper-flow)which go from header to regular test pipes or catalytic convertor. I have my precats hollowed out and test pipes to a tubi exhaust. Car has never run better.

 

there are original ferrari exhaust parts that replace the pre-cats and main cats. look in the tr parts book or on-line. i used to see them on cars from saudi arabia. very nice and they are wrapped like the headers.