2006 duramax, 2015 camaro ZL1, 2017 Colorado duramax

[gtopercy]

I'm looking for a tuner to use on these 3 vehicles.
2006 duramax, turbo back exhaust and air box, I already have a predator tuner for it but since turbo back exhaust seems to idle much richer then before.
2015 camaro ZL1, all stock but looking do an air box, also get rid of the throttle response delay, 2017 Colorado duramax, stock, just want to bump it up some.

thanks !

[mikel]

we can do the first two, nothing available for the duramax Colorado unfortunately.