Engine Pops/backfires under acceleration

[hemi8]

Over about 14-15 psi the engine will pop/backfire, nothing drastic but enough for me to pull out of it. Changed recently from a 3" MAF to 85mm ZO6 but that was a few months ago. Changed the settings in the MAF translator per Eric's instructions, it has the latest chip installed. A couple months ago it was starting weird and I tracked it to a loose crank sensor, reset it and tightened it up, maybe by being a little loose it screwed it up? Anyway, to try and solve it I have changed:
Plugs
Plug wires
Coil
Ignition module
No Change. Tuesday I am going to change the crank sensor and go for a spin. I have the wideband tracking TT chip and Razors alky, both are working fine and I have not touched them. Twin pumps by Racetronics last summer. Only other things that come to mind that could possible cause it are maybe a failing:
TPS
cam sensor
??????????
I have PL and scanmaster, what should I focus in on?? No Knock is being detected and the A/F is right where it always is under hard throttle 10.8. If a sensor is malfunctioning it is not setting any fault codes.
Mike

 

[9SECV6]

Sounds lean to me do you have enough FP ?? Do you have a good boost gauge

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[hemi8]

I have 2 boost gauges, one in my face and one on the wastegate controller, read the same. I have a FP mechanical gauge hanging in my garage I can hook it up and try that to see if its falling. I normally run 21-22 psi.
Mike

 

[9SECV6]

Check FP and then check the crank sensor again and cam sensor sometimes gets worn and needs some tweaking

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[696]

#3 on FP...

 

[hemi8]

Hooked-up the pressure gauge last night, just need a window of time to go for a test run.
Mike

 

[hemi8]

So I noticed a drip of coolant underneath and since I can't see anything on the front of the engine I started removing parts, and then I noticed this............... Think the turbine bent blades ramming into the housing and digging up the

metal could have be the cause? What the hell??
Mike

 

[9SECV6]

Turbo cartridge is no good excessive play in 360 thrust bushing and or worn out bearing depending if its a bb turbo or 360 thrust bushing dont drive anymore until its rebuilt pm (BISON) I think he rebuilds them or contact precision turbo.

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[9SECV6]

Yeah looking closer you may need a new turbo looks like impeller contacted compressor housing..

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[hemi8]

Well, it worked great for 15 years, guess I shouldn't bitch too loud. Is the John Craig TE45 a good replacement for the TE63?
Mike

 

[9SECV6]

Honestly not sure bison would know

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