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View Full Version : EFI Problem, stumped


DmaxHawk
June 11th, 2011, 03:44 PM
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?
bballer182
June 11th, 2011, 04:35 PM
So what happens if you take the stock file and upgrade it to DSP5 and flash that? what happens? I would be willing to be that there is either a pin loos in the ECM connector or there is a table or set of table in the base tune that aren't working correctly.
DmaxHawk
June 12th, 2011, 01:47 AM
Thats what I did. The base tune works fine as a single tune, when I upgrade it to a DSP, thats when it starts jumping around. And it does it on every tune, even the stock base tune that worked fine...
killerbee
June 12th, 2011, 01:17 PM
post your tune and your log of the behavior, if you want help.
DmaxHawk
June 12th, 2011, 01:26 PM
post your tune and your log of the behavior, if you want help.

Here is the tune, I will post the log when I get it.
killerbee
June 12th, 2011, 03:14 PM
I think you will find the problem in your EGR desired flow tables.

The log will be helpful, if you log all the EGR pids.