HE300VG Supporting Mods for Towing & Power
A turbo upgrade performs best when the rest of the truck supports it. These are the mods that pair with an HE300VG — to make more usable power, tow cooler, and keep everything reliable and road-legal.
Quick answer: The key HE300VG supporting mods are a supporting tune, a free-flowing exhaust, adequate fuelling, EGT monitoring, and proper turbo oil drainage. Together they let the turbo make usable, reliable power — keep everything emissions-legal for a road-driven truck.
Tuning
A supporting tune matches fuelling and timing to the extra airflow and helps manage EGTs when towing. Keep tuning emissions-legal for road use — see Emissions-Legal Turbo Upgrades in Canada.
Exhaust & airflow
A free-flowing (emissions-intact) exhaust and a clean intake path help the turbo breathe and keep EGTs in check under load.
Fuelling
Bigger airflow needs matching fuel to be useful. Make sure the fuel system can keep up with your power goals before chasing boost.
EGT monitoring
If you tow, an EGT gauge is essential — it's the single best early warning against heat damage. Pair it with sensible driving and tuning.
Oil drainage & turbo health
Reliable oil return matters for turbo longevity. Parts like the -12AN Cummins Block Drain improve drainage on built setups, and a turbo blanket can help manage under-hood heat. Browse supporting parts in the store's turbo drains, blankets, and fittings collections.
Put it together
Start with the turbo (drop-in guide), then layer supporting mods to match your goals, using HE300VG Power Limits as a reality check.
Frequently asked questions
What mods should I do first with an HE300VG upgrade?
Start with a supporting tune and EGT monitoring, then exhaust and fuelling as your power goals grow.
Do I need a tune for a drop-in turbo?
It's strongly recommended to realize the airflow and manage EGTs — kept emissions-legal for road use.
How do I keep EGTs down while towing?
Adequate airflow, sensible tuning, gearing/driving, and an EGT gauge to stay within safe limits.