New head, new tune, now no boost

[Svohlin1]

The company we used has tuned trucks for us before, but I don’t believe they’ve ever done an isx, always had good luck with them until now it seems. Engine is originally a 550, just wanted a tune for 600 and 2050 torque de-mandated, we believe the older tuning is what was causing the head problems but can’t say for sure. The engine is a reman but if we don’t boot it to the auction house before it needs an overhaul again I’m definitely gonna follow what I’ve read on this forum, definitely some good advice. I’m gonna get ahold of them again and see if they can fix anything and if not then demand a refund and go elsewhere for tuning.