[69gmcc10]

No picture of the ECM because it looks like any other ECM, but with a small black bear sticker on it. Initial report is that it is much faster and more powerful, time will tell on the MPG.

The entire process was simple, I hooked up my laptop to the truck using the cable and adapter box in the picture in post #26, took it for a 2 20 min drives and sent the info collected off to Black Bear Performance. They reviewed the data, told me to mail in my ECU (you can also be sent a new ecu so your truck has no down time, but I wanted to save $100) and they mailed it back all within 7 days.

They adjusted for tire size, removed the Engine Torque Management, reduced the Transmission Torque Management, slightly increased the shift firmness, shift points, set the ECM to run on 91 octane and I am sure they sprinkled some magic on it. It really made a big difference in drive-ability because the throttle response is quicker, downshifts are much more intuitive and when you want all the power and torque you paid for to be available to you when you want it, it is there.

What sucks now is knowing how much better it is and that every truck I own in the future must have its ECM tuned. Knowing how well Black Bear Performance treated me and happily answered my millions of questions I will certainly go back.

I will keep you posted on mileage in the coming months.