PO299 DTC with a bigger turbo.

[HDR]

New air filter. I replaced the S&B oiled filter with a their paper filter just in case that was the problem.

 

[HDR]

I just turned the key on with the engine off and checked for codes and P0299 was there.

 

[AH64ID]

Is the Edge your only source of reading boost?

 

[HDR]

no I have a boost pressure on my pillar.

 

[AH64ID]

Does the CS boost match the mechanical gauge? It should be within 1-1. 5 psi, and the CS should use manifold absolute pressure minus intake absolute pressure. Using that you can tell what the ECM is seeing.

 

[HDR]

The CS isn't hooked up at the moment. When it was it was off by 3-4psi and gradually match up to the mechanical gauge at about 15psi.

 

[AH64ID]

Did it read high or low?

I would hook it back up, at least for troubleshooting this issue.

 

[AH64ID]

Did it read high or low?



I would hook it back up, at least for troubleshooting this issue.

 

[HDR]

it was lower than the mechanical gauge. I'll hook it back up and take it for a drive.

 

[AH64ID]

That tells me you have a sensor out of whack. I only have my truck to go off of, but it's higher on the ODBII than the mechanical gauge.

You should ask Edge if there is a way to look at the ambient pressure on intake and manifold to determine which one is bad.

I would guess it's the MAP thou, as the IAT sensor would have to be reading high for the code your getting, where the MAP could read low. I think it's more common for pressure sensors to read low than high.

 

[Prairie Dog]

Any possibility oil from the air filter got on the MAP? Might try shooting it with some sensor cleaner just for the heck of it.

 

[HDR]

Today I installed a new MAP sensor from Dodge, cleaned all the grounds (including the PCM to the block) and adjusted the valves ( I bought the barring tool awhile ago and have been meaning to do it when I hit 100k ). I took it for a drive and nothing showed up. Its hard to say because it has always been so random.

 

[AH64ID]

I would watch your mech and CS boost for a while, if they correlate better and consistently I would say you solved your problem.

 

[JamesStevens]

Unless your sold on that Edge, EFI Live will wake that truck up and help that killer B spool, and can be used for diagnostic purposes. It can read, and record every sensor on that truck.