HELP Needed Bad

[stibuilder]

Back history is i got this motor from a RV with 73k had the heads decked and cleaned and new HG's and ARP Studs installed. After installing the engine i get a misfire and at times fuel knock.

I moved over the engine harness from the Kodiak RV to my Kodiak. I can upload the log file of going around the block if someone asks but we are straight out of ideas at this point.

Misfire #8
Fuel knock when at low rpm solo (Going up inclines)

Engine
2006 LBZ
ARP Headstuds
Thickness C Head Gaskets
New LDS 30% Over Injectors
PPE Race Valve
PPE Fuel Rail Fitting Supply and Return
Fass 150 Lift pump
EGR Delete
3" Y Bridge
Efi Live by Kory Willis
Heads decked .04
Grid Heater Delete
Fass Fuel Filter Delete
Engine and CP3 have 73,000 miles


Remediation Steps

1.New injector Pigtail #8
2.Swapped #8 and #3 injector
3.Verified Valve lash on #8 intake and exhaust
4.Replaced Crank Position Sensor
5.Compression test on #8 and #2 both yielded 300PSI
6.Ohm resistance test of harness at injector
7.Cleaned MAF Sensor
8.Swapped Stock ECU (Ran like shit)

This is a double post, but looking for idea's we need the truck to go to a charity event next week 1000 miles away. Just looking for idea's and help.

 

[clrussell]

Main engine harness connectors?

 

[Chevy1925]

so known good wiring harness, the issue continues or is the fault following the harness?

 

[2004LB7]

reluctor wheel loose?

 

[stibuilder]

Here is a log file.

 

[IOWA LLY]

You need to swap another ECM in it. But with the same tune. I've seen the injector drivers go bad in an LBZ ECM and cause a single cylinder misfire


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[stibuilder]

I have another ECU but how do i get the license file off the one?

 

[stibuilder]

Thinking about that, i tried that with the ECU from the Motor home and the balance rate was still out on the #8

 

[Chevy1925]

When you swapped injectors, the issue stayed on 8?

 

[stibuilder]

When you swapped injectors, the issue stayed on 8?

Yes, the injectors are brand new from LDS. I can email you some log files if you would like it wont let me post them.

 

[Chevy1925]

Yes, the injectors are brand new from LDS. I can email you some log files if you would like it wont let me post them.

you have to upload them as a .zip file and then you can post them. i wont have much time to go through it today but you can email me it and ill look it over tomorrow. [email protected]

 

[stibuilder]

Log files