0411 swap issues [Archive]

spastik monkey

March 27th, 2016, 02:34 PM

I did my 411 swap today.

97 k2500 7.4 with Whipple.

It ran great before the swap. Now it runs like ass, I have to hold the gas to keep it running. Not throwing a CEL but I pulled codes p0103 and p0713. Connections look good on the pcm.

Any ideas? I've got towing to do this week.

joecar

March 28th, 2016, 01:19 AM

MAF is not being used (DTC P0103) so sounds like VE table is wrong.

Was it tuned for the SC...?

spastik monkey

March 28th, 2016, 01:23 AM

No, just a base tune. I'm still running the Whippletronics until I get my larger injectors.

spastik monkey

March 28th, 2016, 04:12 AM

I'd like to keep maf functionality. I may need a better base tune

spastik monkey

March 31st, 2016, 09:45 AM

Ok. Got back to the house. It's misfiring on all 8. I'm thinking a timing issue. I also noticed a small scorch mark on the pcm. I got it used, so for all I know, it was fried. I'm picking up another reman pcm today and going to go from there. Any other ideas? I know these have computer controlled timing.