I had it on my Escos and TBH it makes the car feel normally aspirated so slower!!!!...you dont get the sudden bang of boost.

Srious noise and flames though ..although i never left it on long as i was paranoid the car would set light ....If you got any air leaks in the exhaust the fire will come out there....really designed NOT to have underseal on the car...anything flammable could be an ass

But i am paranoid