New Project - Skunkwerks EM9D
New Project - Skunkwerks EM9D
Boost cools combustion, just a few psi on the highway will cool EGTs by 100* or so. Its a tradeoff; cooler combustion means less heat waste into the cooling system but boost means exhaust backpressure.
I've found with my VNT that under 45mph my engine likes cruising without any boost, above that it likes having 5psi.