ARP 230-4201
These aren't for your Denali, are they?
ARP 230-4201
I think he means ARP 230-5402.ARP 230-4201
These aren't for your Denali, are they?

I think he means ARP 230-5402.ARP 230-4201
These aren't for your Denali, are they?
I don't think it is necessary unless you were trying to run it at 550rwhp or more. I don't think you are trying to run it on a max hp setting and most people keep their trucks at 450rwhp as a daily. They might bump it up to a hotter tune if needed. But not often.I think he means ARP 230-5402.ARP 230-4201
These aren't for your Denali, are they?
Just curious about this mod. On a newer stock engine?