good morning all. i have a 4.8 4l60 swapped into an 88 grand wagoneer. shorty headers 2.5 y pipe to 3" exhaust out the back, maf at end of intake tube with filter attached(i know shitty setup).
it is extremely lean everywhere. running in SD only and Maf only.running SD its reasonable
no exhaust leaks and no audible or sprayed intake leaks found. adjustable fuel pressure regulator with no reference line.
code set for maf disable and set to 5htz, high rpm disable 8k and reset fuel trims.
should i move the maf up the tube further or just tune for it?
any thoughts to check before i start adjusting tables?
thanks for your time.
pic of maf locationAttachment 131638