P0299 after new turbo install

GMdriver

New member
Nov 8, 2017
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Vacaville CA
I recently installed a new turbo, (built at a local shop with a billet 64mm wheel, and 10 blade turbine) and have been getting a p0299 code ever since. I did find a small boost leak where the egr is connected to the intake, but I don't think it's loosing that much boost. It runs great, no black smoke, no other codes or symptoms. I do have a Diablo Preditor tunner, and I still get the code on all tune levels except the highest one. Could this be a tuning issue due to the new turbo? Could a bad vps solenoid cause this? Any other sensors I should be looking at? BTW I have new gaskets on order to for the egr/intake
 

GMdriver

New member
Nov 8, 2017
8
0
0
Vacaville CA
I am seeing about 4-5psi cruising (65mph), and about 25-28psi WOT. I have a crappy glow shift gauge set, and use the torque pro app. Both are fairly consistent.
 

GMdriver

New member
Nov 8, 2017
8
0
0
Vacaville CA
Could the turbo itself have a leak in the housing? Or if there was a leak from one of the up pipes I think I would be able to hear it...