Hi everybody,
Just got the new Evolution 90mm FI exhaust put on my car and I can highly recommend them to anyone interested in a valvetronic setup for their car.
In off mode it was no different to the stock sound under normal driving, if you give if a bit it sounds throatier. There is no auto mode, only ON & OFF. When "ON" its a beast, very lambo like with a little crackle when blipping back down through the gears in manual mode.
Customer service was good, answered all my questions and was helpful. (SUNUS Motorsports)
I went with the gold tips.
Cheers
http://www.fi-exhaust.com/product/nissan/r35_gtr_evolution.html