I'm curious if the "OEM intake tube is best" opinion is for a stock/unmodified engine? (5.3 and 6.2)
Their own dyno testing showed power increases on the 6.2 (no 5.3 data I remember seeing...?) with most aftermarket intakes vs. the OEM system. Would the aftermarket intakes be helpful only in conjunction with their ECU tune, or stepping it up to a tune w/cam & LT headers?
There's a few variables for this argument that aren't always discussed: the difference between airflow of 5.3 vs. 6.2, hardware mods, etc.. |
I was told by them that the stock 5.3 would never flow enough air to create a situation where the intake system, or exhaust, became the bottle-neck.
With a larger engine & better flowing heads (6.0/6.2) there's still a question of when the factory parts become the restrictions, and at what point you need to upgrade. Remember how all those JDM and other turbo-cars typically have "stages" of tuning to offer general roadmaps for upgrading? There seems to be less of that for these N/A engines.