P0102 code
 

Had the car out today and got this MAF code, not the 1st time its happened. Any ideas on what causes this? I'm running the 4" housing from Texas speed with a delco ls3 MAF sensor and piggyback harness. Also threw a P0507 high idle code.
No Vac leaks
MAF is clean

is ur tune speed density or maf ? cause I have an SD tune yet i get an occasional MAF code... talked to dave about it and it seems to only happen in extreme weather situations (really hot or really cold)

From my understanding both, MAF during low RPM 3000 and down. DS after that. If that makes sense. Car has always had a hard time idling on cold startup but today it was more then normal, then the light came on.

maybe it was re-learning? did u have the battery dead or disconnected?

Got a scanner? See what the maf is reading. That's a low output code.

I have snap-on scanner at my fathers shop. I didn't make it over there. I put a new red top in it but I've driven the car since then and didn't have any issues.