I didn't realise you were turbo. Are you turning up the boost along with the tune? It seems imposible to me that event a turbo engine can actualy run and make 370 hp and with only tuning add 275+. Am I wrong?

 

I also posted that every time its been to the dyno its had issues.. The first 2 times it had waste gate issues therefore unable to control boost the last time fuel pressure dropped from 58 to 28 and that alone only made 370. So with that said if the truck would have been able to control boost and had fuel pressure there would have been no doubt in my mind it would have put down close to 550 on 10 lbs so imo the truck will make close to 650 on 14lbs.

 

Starting to make more and more sence!

Good luck with getting all the bugs worked out. I will be keeping an eye on this because I plan to make a very similar set up on my Tahoe. 70 something turbo and around 12#s.