Both very true. But i know a guy with a VF34 and hes pushing a little over 300awhp and he says his tranny is still really smooth. Also know another guy with a 18g setup that he says is pushing 500 but im thinking maybe he is exaggerating the truth. Id give it about 400 maybe 450, but he is also using the stock tranny on the same model year. I think it all depends on the tune and how hard you drive it. I really only get on my car maybe once a week.