My truck is a 1999 1500 5.2L QC 5 sp. It contracted the deathflash virus in 2002 because of coronary detonation. I've read some posts regarding the use of tuners to return the computer to stock (or better) settings. I never noticed a loss of power until my mechanic did an injector cleaning and reset the computer in 2004 before a road trip. Wow! For the 30 or so miles before the pcm "learned my driving style" it had much quicker response and didn't idle roughly on cold starts. (The truck idles like a funny car for 10-15 seconds on cold startups then smooths out. This only began after the flash.) Then the flash took over and there went my power. The ping, for the most part, is under control. (Plenum's good and it doesn't use oil.) The cleaning did the trick for me. The truck is stock save a KN filter and Champion Truck plugs. It has 77,xxx miles. I would like to get it back to the original stock power without detonation. Should I go with Hypertech 3715, Superchips 50004 or Mopar PCM? Do both tuners perform similarly? I believe the Superchips is cheaper-why? Is it safe to run on the 93 octane setting without detonation? I know there isn't much power to be gained, etc. I don't care. What have you all done with your deathflashed 5.2s? Thank you.