however the gt3076 is only marginally laggier than the gt3071r, so one would assume given the lower lag on a gtx wheel will overcome this and give great improvement on power.
the gtx3076r is only a 600bhp turbo when you're at 2.5BAR though, at 2BAR it's more of a 500bhp turbo.
exhaust housing plays a big part too, so that needs to be a factor too.