Am i missing something?

I have the pettit chip and im only hitting 8psi at 4000 but then around 5500 am pulling a full 10-11.

I thought it was suppose to be 10psi as soon as it hit around 3500-4000ish?

 

non sequential...

 

Did you do rich or poormans non seq? I know the poormans isn't as good and usually doesnt build full boost until a bit later.

 

rich mans

 

sounds like your wastegate isn't holding properly then. Check to see if there is play in the shaft, or to see how much tension is holding it closed. Also, check to see if your boost controller is properly hooked up.