When i first bought my GT i purchased a DHP. When i went M90 i bought ZZPs tune for the blower. The first PCM would stall the car out, and only command 6 degrees of timing, and dump fuel like crazy. They sent me another one and it fried when i was having the car dyno tuned. I bought an intense PCM and its still in the car now, re tuned a few times with the blower and now how it sits with the turbo. Personally id choose a DHP or Intense, then again i have my own tuner. Is there a GM shop local to you? if they can tune LS cars the 3800 shouldn't be an issue.
