I'm getting a code 45: System Too Lean or Too Rich malfunction in the fuel monitoring systems.

Anyone have any ideas? I'm guessing its my MF2 that needs to be tuned.

 

damn.....wrong forum....ment for FI

 

You would be correct. Most likely it is for too Rich. If it was lean enough to throw the code you'd probably be needing new pistons

 

actually, i run into the code a lot.
except I can tell when it's too rich or too lean...i just check my laptop (standalone).

I get both codes, and I run a high boost turbo gsr... Too lean on the low end (0-2800RPMs) and Too rich up top. 4000-8000.

silverLS: look to where you've recently changed your fuel characteristics....how does your a/f guage look right before the code comes up? You gotta be paying attention to that thing.