Has anyone done a true dual mod to the stock ISF exhaust?
eliminating the y pipes after the 2nd cats and before the rear mufflers (also removing resonator) and done separate pipes??
Im wanting to do it but want to know if its worth it. I can imagine it would help the flow.
ANY SOUND DIFFERENCES?
I have heard nothing but good things about Joe Z exhaust and by good things I mean the exhaust note and . I have to fight myself every single engine start not to go by one. I need the F as quiet as possible when I am moving executive staff members and then straight beast mode when I drop them off at the airport.
08 Mercury Metallic LEXUS IS-F
VAISTECH IVIC5 | Interior LED swaps | AFE Takeda Intake | GT Spec Front Strut Bar