Now you've installed a high flow cold air intake and a free flowing intake manifold but you're still not getting the spool up and lower EGT's you were hoping for. Did you happen to look at how restrictive your factory grid heater is? The factory grid heater is fine for stock engines but terrible for promoting the airflow you're trying to push through your Cummins. Our Glacier Diesel Power Mega-Flo grid deletes and grid heater relocation kits feature a larger plenum entrance area that is port matched to your intake manifold. This drastically increases airflow while reducing turbulence and restriction losses. Our grid delete plenums and block provide a factory fit with no alterations to your fuel rail location.
Besides the functional attributes of these grid deletes and relocation kits they just flat out look good! There's something to be said for popping the hood of your truck and having a well dressed Cummins.