Diablosport Forums

I'm used to working on Harley motors. In that industry, we buy a TTS Mastertune, which is an interface between the ECM and a laptop, and simply gets plugged in to the ECM interface - no splicing wires like a wideband 02 logger.
With a TTS Mastertune, we log every cell on a grid, with throttle position (or kPa) as the x-axis and rpm as the y-axis. You can do this either on a dyno (safer) or simply by driving on the street with a laptop in the saddlebag, trying to cover every cell long enough to get a reading. We can then adjust each individual cell fairly precisely to within 1% of optimum before we apply a fuel/air map.
What I seem to be seeing here in the auto industry is a lot of canned tunes that are just applied on faith - which I'm just not familiar with. If I change my exhaust, cam, and intake on my 2012 Corvette LS3, how do I gather the data for the In-Tune to know how to modify the tune to fit the motor?
I see in the Predator forum a sticky that describes more of a tuning experience, but even that is only high kPa cruising in a narrow rpm, and then a WOT run - how does the tool fill in all the unknown cells in between? Or am I looking at the wrong tool? My goal is to be able to tune my own vehicle instead of taking it to a tuner with a Dyno.
Thanks for your help, Jon

you can data log with any of the tools - predator, intune, trinity... then make adjustments using the parameters that are available to you via the handheld tool...

the parameters you can make adjustments to using the handheld itself are:

#
COT time delay
#
DoD disable
#
Idle RPM Drive/Neutral
#
Injector Slope adjustment
#
WOT Fuel 2k-3.8k / 4k-4.9k / 5k-7k
#
Rev Limit
#
WOT Spark (in degrees) 1k-3.8k / 4k-5k / 5.2k-7k
#
Fan adjustment, individual adjustment per temp dependent cell
#
Tire Size


if you want to be able to do more, like your own custom tuning like you mention you do with harleys, then you'd need to purchase diablosport's CMR tuning software to be able to have more control and complete access to everything in the tune file with a lot more items/parameters than just what the handheld itself gives you... The GM CMR tuning software is approx. $2,500 and if interested, you can contact sales at [email protected]

sorry for the thread-jack, but will the tuner adjust axle gear ratio as well, ie. 3.73 to 4.56, or does this need the custom tune.

I didnt see it on your list or anywhere on the website for that matter.

yes, it can adjust axle ratio on most vehicles.