I have tuned 2 of these 8.1 allison trucks. both are for the same customer. He loves them both but they are both throwing a mass air performance codes. Can anyone help me with this, can not for the life of me figure this out. I have had my buddy that use to tune for me look at this and he is stumped too.
Anyhelp would be cool.
Thanks.
Brian@RPE Performance
(509)280-8466
Post up your tune file, and the mods on the vehicle, and I'm sure one of us can help you out.
Formerly known as RWTD
Toys: '22 Tesla Model S Plaid / '20 Chevy Duramax / ?20 Sea-Doo RXT-X (2)
and what the trouble code is along with a scan
Sulski Performance Tuning
2000 WS6 M6 - LS6 (long block, refreshed top end), 10.8:1 CR, 90 mm ported FAST, Exo-Skel, 227/232 cam, QTP HVMC, EWP, GMMG, 9" w/4.11s
2018 Sierra SLT 5.3L A8 - Airaid intake tube, GM Borla catback, L86 Intake/Ported TB
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