New to tuning software instead of hardware. Back story, Had a exhaust manifold snap and cause a knock, replaced it as soon as I got home. A week later a lifter let go. Pulled the heads to replace lifters and cam and do a dod afm delete to find a piston cracked. Pulled engine and rebuilt it.
Parts replaced as follows.
Replaced headgaskets with oem thickness
Replaced all 8 pistons with summit forged pistons, only change was compression height, went from 1.340" to 1.326"
Replaced oil pump with stock and stock pressure
Replaced all cam/crank bearings with stock size
Installed a BTR truck norris cam
Replaced lifters with non dod lifters.
Installed a spectre air intake system
Long tube headers going to 3 inch to an x then back to 3 inch all the way to rear axle
Got it put together and back in the truck. Started truck after installing engine to be sure of oil pressure, ran and idled for about a minute, all good. Thought the tuning was going to be way over my head so brought it to a tune shop. They hassled me for about 3 weeks and had some issues, some from me and late nights after work installing the engine. Got it all fixed mechanical wise and they started tuning just to find out maf wasnt reading. Maf read before rebuild and nothing wire wise is messed up. Has a code for maf but seems to have gone away. Maf was swapped out with known good maf and still had the same issue of not reading the maf. I finally got the truck to do it myself. Watched all of Goat Rope Garage videos and followed his steps but....
My issue now is with my wide band reading extremely lean at about 1.56 lambda. Added fuel to idle and did not change. Smoke tested vehicle both hot and cold and no leaks. Below is my tune from after I made a couple changes from the shops tune with Goat Rope Garage advice. Some thing else to add, on the scanner, my maf sensor is reading at or around 3500 hz
The scanner log was a mistake cant figure out how to get it off my post
MAF step one.hpt
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Originally Posted by Russ K
