Forgot to mention, no lag whatsoever and it pulls like an express train from 2800.,hits 8000 a piece of ****(oops) and runs like a swiss watch. If you are having problems with the seq.turbots then I strongly recommend it. Also I have seen dyno figures on seq. and non seq.(on similarly tuned cars) and the non seq. is producing 60bhp more 3500-4500 than tne seq. (no difference max rpm.)Thats worth having!!