I read somewhere that you can pull a fuse or plug up a vacuum hose on the exhaust valve so it stays open all the time, not just sport mode and above 3krpm.

I can't find how to do it or what fuse it was.

Any help would be great!

 

Anyone know anything about this?

 

Anyone?

 

Ive also heard about this , but I dont think i would suggest doing it.. my dad recently got a granturismo s and just the few times ive driven it i got a little annoyed by the exhaust in sport mode at times, and was glad to have the option to close the valves. If you want the valves to stay open why not just leave it in sport mode

 

Not sure, but if you look at the muffler externally there should be some sort of way to manually open it with your hand, if you can do that just figure out a way to keep it "locked" open. On my f355 I was able to do it to its bypass valve, but mine is much easier to access because it's not on the mufflers.