What is the absolute best hardware upgrade to stop severe carbon soot from choking your 2007-2012 6.7L Cummins intake manifold?

[Stock_Is_Boring01]

Every 2007-2012 6.7L Cummins owner knows the nightmare of a choked intake manifold. The factory emissions system dumps endless abrasive carbon soot straight back into the air track, caking the grid heater and narrowing the intake throat until your engine can barely breathe. While swapping out the stock components with a premium, clean-flowing hardware fix is the ultimate way to lock out that sludge for good, what is your go-to configuration?

Did you pair your block-off kit with a high-flow intake horn, or did you do a full grid heater delete to maximize airflow?

 

[OpenRoadOutlaw]

Be careful before you do a full grid heater delete if you live somewhere with real winters. I’m up in North Dakota, and without that grid heater cycling on sub-zero mornings, the cold starts are absolute hell on the batteries and starter. I chose to keep the grid heater but upgraded to a billet spacer block that moves the heater element out of the restrictive lower intake plate. Pair that with a block-off kit to stop the soot, and you get 90% of the airflow gains without freezing your engine out in January.