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davepl · 03-21-2018, 02:48 PM

But who cares about the HPT proprietary stuff for a naturally aspirated pickup like this? Are you saying he needs any of that?

I'd unplug the MAF and drive it. The speed density tune is excellent, at least in the LS3. And to be honest I'd trust GM's SD tune a lot more than I would HPT, all else being equal.

03-21-2018, 02:48 PM	#20
davepl Registered User Join Date: Aug 2006 Location: Redmond, WA Posts: 6,332	Re: 6.0 runs and quits But who cares about the HPT proprietary stuff for a naturally aspirated pickup like this? Are you saying he needs any of that? I'd unplug the MAF and drive it. The speed density tune is excellent, at least in the LS3. And to be honest I'd trust GM's SD tune a lot more than I would HPT, all else being equal. __________________ 1970 GMC Sierra Grande Custom Camper - Built, not Bought 1969 Pontiac 2+2 427/390 4-speed Coupe 1969 Pontiac 2+2 427/390 4-speed Convertible