WHen I got LS1 edit a year ago, I sold my 99 HPP3 on ebay for $250. I bough into Edit with 2 others, so my share was $250. LS1 edit is well worth the money.

 

The H.P.P.III was the second mod I got, and I got it when the truck had only 500 milles on it. Befor I knew of the potentional of thies truck. Befor I knew of Ls1Edit. It was also befor ls1edit was available for the trucks I think. Im going to get ls1edit because I will never out grow the ability of the program.

 

i never had a problem using the 2 together. i'll sell you my gms maf. that way you could save some money. i gained about 2 tenths with it.

a friend wrote to granatelli about using the regular one verse the one used with an aftermarket intake, and they said if you don't see any problems than you don't need to get the one used with aftermarket intakes.

let me know if you interested....

 

Thanks for the offer phatchevy, but its the other way around. GMC SS has talked me into selling the HPP and use that with the cash from my budy and buy ls1edit.

So if you need a HPP for an 01 let me know.