Hi just posting an update, the turbo and the gsc s2 cams and springs are in now and we are tuning to a 9k redline. This is on a Mustang Dyno with meth injection. We are having a problem holding boost above 7k rpm, (yes we have installed the high-boost canister). If we keep the boost up (>25-27 psi) it seems like the ECU is cutting fuel when we go above 7k, but if we let the boost taper off we can keep the revs up.
Any ideas??
The shop guys are speculating about needing an updated base map?? ( or something, I'm not t tuner...)

I tried to attach the dyno plots, but cant seem to, I just attached them to an update in the dyno results section and it keeps telling me that I have already uploaded the files. So if you are interested search in the dyno results section for efr7670...
cheers,
John