I have a 98 GMC K1500 with a 5.7. I had a Hypertech on it a while back but decided to sell it because I thought there was not much change. Since then I miss it, turns out it really did give me quite a bit more power on the low RPM end.

I am going to buy another one but thought I would check to see if anyone has tried the Superchips programmer for this truck. If so what is your opinion of it?

Thanks in advance for the info.