2015 Yukon - Tuner & HP Performance?

[Flynnstone]

I'm interested in tuning my new Yukon, but have yet to find any performance data for the 5.3l.

Are there any hard figures on the expected HP/Torque improvement?

 

[Fifty]

They don't seem to tune on dyno's so before and after curve or afr numbers aren't available for publish. I'm still waiting for them to tune on a dyno and see what's what on afr's and DAM...

 

[JennaBear]

That is correct, we have not had any 2015s on the dyno, only street tunes.

But for reference, we do tune on the dyno. Most vehicles do not need a dyno tune, a street tune is far cheaper and provides best streetable tuning for the stock vehicle.