Hi,
I am not sure what EFI live is? I have heard that H&S is the safest programmer to use compared to the others but I am sure some people will disagree. I heard it will stay within the factory specs, but I am guessing that is only on the mild setting. I did the full delete and have the H&S xrt pro. I did that a year ago when I bought the truck. My truck had no warranty when I bought it, but it only had 26,000miles. I only have ran it on the mild setting since I don't have the arp studs and still on the stock tranny. So far, no issues. I also made a custom 4" forced ram/cold air intake which is behind the vent in the bumper. I was blowing the black smoke until I just recently installed the update for the programmer and no more black smoke which is good since they are cracking down on that here in VA. I knew there was an update for it almost a year ago, so I may have caught more than one update. But the update changed how the truck drove and didn't like it, so I went ahead and bought the overdrive tuning to go along with it and I wasn't quite 100% happy yet, but you can tweak some setting. The only setting I changed from default was the shift firmness, dropped it one point, in between stock and default, a tad softer and have about 500 miles on it and seems to be pretty good, just wish it didn't rev up so high in each gear, since you can put tow/haul mode on to get the truck to do that. All and all, I think H&S is great and have no regrets. I can't wait to get a built tranny and arp studs so I can go up a stage on the programmer. I tried it once for a day and decided I didn't want to ruin my trans yet, or blow my head gasket. But holly crap, what a difference. I don't even know what I would do on the highest setting, probably drive the truck sideways for waaaaay tooo long and ...... maybe I shouldn't talk about that, but I can beat a newer V6 mustang 50mph-75mph on the mild setting and I am almost maxed out on weight. These trucks are down right awesome!!!
