Jake brake w/ performance tune

[Motorboy8769]

I was wondering if it is safe to run the jake brake in a performance strategy tune on my truck? It's an 04 6.0


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[colo_dually]

If you are referring to the exhaust braking using the turbo (not an actual exhaust brake mounted in the exhaust), I've been doing that for over 25k miles now. All my tunes have the feature, just to varying degrees depending on the application.

[Motorboy8769]

Oh ok what exactly does it do does it help slow the truck at all I am re flashing it with the jake brake now will this hurt the turbo?


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[Motorboy8769]

It is just the jake brake option in the sf3 it self


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[colo_dually]

It won't damage the turbo, as the stock programming using the same feature (via engine breaking). It will slow the truck down when descending grades, particularly with tow/haul engaged. Takes a lot of load off the brakes.

[L&B]

It closes the vanes in the VGT to increase backpressure when you back out of the throttle.

[Motorboy8769]

Also it seems to shift really hard maybe it's normal but it's not as smooth shifting as before should I lower the shift pressure


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