presslab Posted October 30, 2012 Share Posted October 30, 2012 I could, but running a PP6 will allow me to have Pre run it on the dyno and tune it perfectly as opposed to the "hotdog into the air" method of mapping by butt dyno/engine load/feel. You could certainly dyno tune with the stock ECU, it's just more work than one you can change on the fly. Although a romulator would solve that problem. That's probably how Subaru did it. Link to comment Share on other sites More sharing options...
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