I've read setup horror stories about this DTT. Google it and read the V-Twin Forum one, for example
I purchased the Thunder Max Auto Tune, priced the same bur fully automatic. No screwing around with the idle screw.
I went the route of IED and the SE Race Fueler, waste of time and money. Here is a picture of the plugs after setting up the R/F to run what I thought was very well.
I'll post a picture of the plugs when I get 150 miles on the Tmax A/T.
It is easy to install, the map for your specific set up is loaded for you.
install the unit, change the o2 sensors, load the soft ware, initialize plug the laptop in, start the engine, click auto IAC and the system sets itself.
Now ride and it auto tunes to your bike.
My bike never ran or sounded as good with or without the other gimmicks.
Al
What do you figure caused the carbon then if not the tuner?
They look like they could be too cold of a plug from what I can see. Why not try a set of stock plugs for the bike? Probably run even better.