Will this downloadable update to the max mileage create to much psi for my truck to be able to handle? Is it the same as putting the actual quad boost fooler on ur truck ? or does it just allow boost to build faster?

 

No you will be fine they dont make it so it overboost truck

 

Yep, you'll be fine. It will allow you to build a little more boost sooner. Ultimately you need more fuel to build boost. You really don't have any fuel adders......yet so no need to worry. Your truck will safely build boost to ~48 PSI, before you would need to worry about a headgasket, and more boost with a better matched turbo that would be more efficient with better drive ratios than the stocker.

 

I would run the boost fooler it will help lower your egt's abunch. like Staarma said your safe below about 48psi.

 

My understanding is that the boost folling tune for the M3 wont do anything for mileage or power as the box is set up to increase mileage and if you need to boost fool you'll be out of the range of the area that the module works in.