stage 3 issues

[wildchilds74]

Ok, so this build has taken a couple years and finally got it to the point where it's close to ready. Just need to get the last couple issues figured out.

Started out, basic stock. had it 6 weeks and the turbo fails. Upgraded to KO4 and then add bosch 040, big MAF housing, AEW intercoolers, injectors, upgraded to the newer coils and eliminated the ign modules from the wiring harness, down pipes. In the process of getting things going, a couple issues, cheap turbos went out and rebuilt with all better parts, head gaskets went out, back fired a few times and the mass air looks like it got burnt but seams to be working fine.

I have it to the point of no codes, runs great... but, not building boost and running way rich.

I'm gonna get a new mass air, and a set of plugs to see what it does then. Any recommendations on which plugs to run?

[HighPsi(NorCal)]

Ngk 7bkre .028" > part number 4644

[Monty23]

How are you verifying that it's not building boost?
Did you pressure test the I/C piping?
Do you have a mechanical boost gauge? Have you tested the gauge to make sure its working properly?

If the gauge is good, I would remove your N75 from the system and plumb the waste gates directly to the compressor housing boost taps and verify you are getting wastegate pressure.

If you are still getting no boost, you either have a huge boost leak (maf readings should sky rocket when WOT) or your turbos are messed up.

[wildchilds74]

boost gauge in center vent

[Bische]

Is it tuned for that hardware?

[wildchilds74]

JFONZ stage 3 tune