The Diablo Sport devices (InTune / Predator) do have full on tuning software capabilities just like EFI Live and HP Tuners... Also just like those others it costs quite a bit more to get that full capability and its a pretty big learning curve. The Diablo devices do make it easier for the end user for certain things though as there are a number of parameters that are easily adjusted right on the device for things like shift points, setting a specific tire size for correcting your speedometer and of course some basic (but still very good) pre-made tunes.

Just like EFI Live and HP Tuners, with a Diablo you will still get the best results by having a specialist do a full custom tune in person on a dyno. Next best is a full custom remotely created tune - for Diablo devices, the guy I linked to above is the most popular.

With a Diablo you would do some specific logging as instructed by Lewis. Then send him the logs. He will send you back an initial custom tune. You then run that for a couple of weeks to let it settle in then do some more logs including a couple of WOT runs and send him those logs. Then he will build a final more refined tune and send you that back to load.

On any custom tune, in person, mail order, email, etc it is also best to have most of your mods like headers, new plugs, wires, O2 sensors, etc all done before you start the custom tuning so that the custom tune can account for the mods and take the maximum advantage of them.

 

I did mail order tune from Blackbear performance, only after i put on dynatech long tube headers, airdoc (afe powercore filter in the ORIGINAL box) and a borla cat back. My experience and thoughts are here:

https://www.hummerforums.com/forum/h...catback-36194/

Very easy to work with Justin at Blackbear. We exchanged a couple of emails, and then we amended the tune a couple of times. If I was close, i would pay for a custom tune, but am in Russia, so it's not so easy. More than pleased, and would use again.