I wouldnt waste money on HFC...... The reason you are replacing the stock cats is for more flow, so why not go with non-resonated Test Pipes..
I know I loved My APS 2.5" I had on My 06 Z Coupled with Megan Racing Headers and Borla TD Exhaust it sounded GREAT!
DAN
__________________
-My BRZ with exhaust will decimate all if we overnight parts from Japan-
10 Civic EX Sedan- Current Daily
|