Quote:
Originally Posted by slowboy
So if you're on speed density and you change something relatively minor you'll have to retune? It won't adjust like a normal stock MAS would?
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Correct, you can change the intake manifold or cams or a MAS car and the fueling should remain the same. You change anything on a speed density setup that changes the efficiency at the same pressure and your fueling can change. But realistically if it's only a couple percent across the board, then a small change in A/F isn't a big a deal. A cam change that might benefit from just some small timing changes on a MAS, might require an entire fuel map rework on a SD car.