What Programmer / Tune / Tuner??

[MTF]

So who are the recommended tuners for a Whippled truck? I didn't get the tuner with my truck when I bought it. I have figured out that JDM tuned it for the previous owner but that was for 93 octane and sea level. I live in Colorado and all we have here is 91 and I am at around 6k ft altitude. I have a SCT X4 tuner and was wondering who all tunes these? I would like to have more than 1 choice of tuners if possible. Has anyone tried JLP? I know Livernois does, but you have to buy their special tuner. Thanks in advance.

How is it running?
If it's not pinging you should be good.
The PCM will correct for altitude and should do a pretty good job adjusting for 91 from 93.
Otherwise, you can pull a little timing if you had the Tune.
You're best-off dealing with JDM.