LMM: Efi problem, absolutely stumped..

[DmaxHawk]

Im working on putting a dsp 5 on a 07.5 lmm and have no idea what's going on with it. I installed the switch with no problems. Now when I try to flash the dsp tune the truck accepts the tune fine. When I try to drive it on the other hand, that's when it starts acting strange. I step on the throttle, rpms increase and then start jumping around like it had a rev limited or something. I checked all the tables and they look good. If I load a stock tune, it works fine...anyone have any ideas?

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[DmaxHawk]

Ttt

 

[LBZrcks]

Did you full flash it when you put the DSP tune in?

 

[DmaxHawk]

Did you full flash it when you put the DSP tune in?

Affirmative

 

[1chevy02]

I had one truck do this. Never could get it to work. I finally full flashed it with an os from another LMM same year, options etc. Has been running fine for over a year.

 

[DmaxHawk]

I had one truck do this. Never could get it to work. I finally full flashed it with an os from another LMM same year, options etc. Has been running fine for over a year.

I tried that with another tune that had the same os. The single tune worked but the DSP had the same problem.

 

[1chevy02]

I mean I flashed a different os in it.

 

[DmaxHawk]

Oh, I see. Its worth a shot.

 

[$Smokin_Duradog$]

When you put the new cal if you used a script were you sure to make sure that the values for tune were set for what the script was? Metric or Standard? Just a thought I know you didn't say one way or another if you used a script but if you did that would be the first thing I would check.