Maybe a dumb question but I am looking at the GM performance engine harness which includes ECU PN 19354329. Looking through the tech document I see it doesn't recommend tires greater than 30" - I currently have 31" tires and am planning on 33" for my final build. Will this unit be tunable or should I just go for a PSI harness? I do like the plug and play aspect of the GM harness as this is all new to me, but not if it's going to risk damaging my transmission due to incorrect settings. Thanks!
https://www.gmperformancemotor.com/parts/19354329.html
01-05-2026, 01:39 PM
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