collinedw

Hey guys,

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?

Thanks

flowrider

iTrader: (9)

Although I am now running the new Dual Mode PPE Exhaust system, my prior exhaust was a fabricated dual system using stock mufflers with dual intakes on the mufflers:

https://www.clublexus.com/forums/is-...n-exhaust.html

Lou

collinedw

Any sound differences? I'm
Not going to do the dual muffler inlets. Just the separate pipes. What would the difference be without the x pipe and just leaving the pipes separate all the way to the end?

08stockisf

You may experience vibration without an X pipe, kinda like a whump-whump sound. You may have to visit the exh. shop a few times to get the desired effect.

flowrider

iTrader: (9)

You may want to read this:

http://www.carid.com/articles/are-2-...st-system.html

Lou

powermungr

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.

flowrider

iTrader: (9)

^^^^Then this would bee up your alley:

https://www.clublexus.com/forums/is-...e-muffler.html

Lou