Telco
Dedicated LVC Member
do you use I think it is called HP tuner? My uncle uses that to do his GM's
I use EFI Live (EFI), which is a superior product to HP Tuners (HP). HP is a VERY close second though as both are excellent products. The people that have only one think the one they have is the best, but the people who have both say EFI edges HP out. EFI allows you to tune more things, and it's a lot easier to use if you are making major changes. When I pulled the 4L60E out of my truck and replaced it with a 4L80E, it took me about 30 seconds to swap segments to make the computer talk to the new transmission. From what I understand it's a lot more complicated to do this with HP, requiring that you have one of their techs make the swap. On the other hand there's something that HP gives more control over than EFI does, think it has to do with electric fans, but I don't recall exactly what it is.