Hello I am a new member here and I have not owned a GM Vehcile in about 20 years. I just acquired a 2018 Denali with multiple issues with the AFM system. I pulled out 2 bent push rods, 1 lifter that came out in 3 pieces, The cam shaft has enough wear that it's getting replaced. I crunched the numbers using all GM OEM parts to repair the system which includes a new VLOM vs buying a delete kit. At this time I was considering the AMS Racing kit which includes a Diablo hand held programmer. The price to either repair vs delete are about 150.00 only in total.
I am curious if GM has updated the AFM/DOD parts since 2018 and if they are any more reliable. I am big on keeping things OEM but with this AFM system having so many issues I am considering deleting. I understand it would lose about 8% MPG on the highway or under light load. Not sure if the fuel savings over time would be worth it if this AFM system fails again. How has the reliability been after replacing the damaged AFM parts over time. How many miles have people been getting or is this simply still a gamble? If I do delete what is the opinion on the Diablo tuner vs paying someone or purchasing HP tuners setup? I need to make this decision very soon as this Yukon is tying up my bay and I need to order parts. Thank you.
I am curious if GM has updated the AFM/DOD parts since 2018 and if they are any more reliable. I am big on keeping things OEM but with this AFM system having so many issues I am considering deleting. I understand it would lose about 8% MPG on the highway or under light load. Not sure if the fuel savings over time would be worth it if this AFM system fails again. How has the reliability been after replacing the damaged AFM parts over time. How many miles have people been getting or is this simply still a gamble? If I do delete what is the opinion on the Diablo tuner vs paying someone or purchasing HP tuners setup? I need to make this decision very soon as this Yukon is tying up my bay and I need to order parts. Thank you.