Install Hypertech tune
The ECOtec engines,, make very similar same power on 87 as 92 in stock form..
The Direct injection ECU is pretty adaptable.
One of the issues with getting tunes on the less mature products..
Does the 2015 have the ECOTEC family or the LS/4.3?
Seems like the other option,, if the motor is not modded is to just pick up another ECu and get it set up a a "daily driver" in its programming?


