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Not sure if it's relevant, but it is a flex fuel.

Thank you.

I apologize in advance if this is a dumb question.

I am trying to help my neighbor diagnose his 2011 Chevy Suburban, it has a P0300 code. I noticed in process that it never goes from V8 to V4 and...

It's unfortunate to see HPT drop support for DPF removal, it limits people to EFI Live that race offroad. Obviously it's been abused greatly though.

EGTs when towing
Anti Theft
Turbo Brake

Just a few advantages to switchable tuning.

Why wouldn't it be driveable? I haven't seen a lot of guys create them, but a stock tune could be considered an emissions tune.

It is...

Probably should check out a Duramax forum before you get too far along there.

Does HPT support the a50 TCM?

Any updates?