My Ulmer mapping right out of the box was spot on in my opinion as well, ran 8 psi up to 12 psi and never actually needed to change I thing. I did lean my out some in the cruising rpm range where there was little to no boost, wasn’t necessary but I do feel it helped my mileage by 1-2 mpg on a full tank of gas. As for boost..I’m assuming you have a boost gauge? If so, set it at 5 psi and enjoy it..don’t get greedy and try to run 6 or higher if you do any long pulls of any kind, also don’t be afraid to run high 10’s/low 11’s wot afr..a little rich won’t hurt a thing, leaning it out at wot is only going to gain minimal amounts of power and you’ll never notice the gain. Keep the wot fueling safe and if you want to tune anything focus on the mid range/cruising fueling as that’s where you’ll notice the increase in mpg and throttle response..of course you need an afr gauge to monitor that and if you don’t have one or intend on getting one then just set boost and go, Ulmer’s mapping will treat you very well!
