loosing throttle 6.0 boosted, cos 03150003

[derkscustomcars]

Hello,

I have a 2006 6.0 in a 69 c10, the pcm is flashed to a 2003 now with cos 03150003. and matching pedal and tac module

The truck runs fine, still a little rich but that will be changed.

As soon as i go over about 60% throttle, a maf code gets set, truck goes to an idle and i lose control over the throttle.

Once i delete the code, the throttle works again.

Im not running a MAF or o2 sensors, so open loop.

I have the proper map sensor etc.

Please have a look at the attached tune, i must have missed something.

Thanks in advance20096

[joecar]

Post some log files.

If you are running without MAF, you should have an immediate MAF DTC (this is then causes PCM to use VE only).

It sounds like the MAF and MAP (and possibly the ETC) sanity tables (in Engine Diagnostics) need to be adjusted.

[derkscustomcars]

Yes there is a maf code. I run just the iat. I just blew the transmission so I'll have to wait till tomorrow or later tonight to post a log file. I'll have a look in those tables. Thx so far

[derkscustomcars]

20112

please have a look at the short log file. it was under acceleration and throttle died

[derkscustomcars]

i am going to try a different pcm

[joecar]

Try this: set C5501 to 500.

[derkscustomcars]

made no difference

[derkscustomcars]

could it be B6612?

[joecar]

could it be B6612?You could try editing that...

but if you think TC is kicking in, then disable TC.

[derkscustomcars]

i did, i have to ad that i am using a turbo 350 transmission. the pedal and tac module are the right ones for that pcm. i have switched out the tac module with a known good one.

still no go

[derkscustomcars]

changed the pcm to a real 2003 pcm and the throttle works. so reflashing a 2006 pcm to a 2003 os works NA but not boosted

[joecar]

Interesting, thanks for posting your results.

[derkscustomcars]

still issues, a lot better but not 100%