So i was messing around with my scan gauge yesterday and was looking at the boost feature of the gauge. At WOT the boost climbs to a certain point and then eventually reallys -28.9 psi @ WOT. I dont have any overboost codes though. I think it shows 0 or so on the map psi? I adjusted the overboost regulator just enough so it doesnt set the light. Does the truck only defuel with the CEL or is it defueling currently? The truck still makes 47-48 psi @ WOT.
I think its kinda like Big_stroker is thinking. You have to find out whats in the tuning first. Then go from there. Because stock i think its starts defuelling at 24-25 psi, but i also believe it sets the SES light when it does it... So more than likely swamps is doing the same things gearhead, php, dp tuner and so on are doing with the MAP settings. Just my guess though :shrug:
So if Dave doesnt check this, maybe post something up over in swamps section asking if they have something in the tuning so you dont have to run boost regulator to the MAP.
IDK if anyone has figured it all out yet with the map sensor on the Super Duties... As far as I know I'm the one one that doesn't defuel AND doesn't throw a code. I didn't simply disable the check engine light either.
Our 80HP - 140HP calibrations are programmed to eliminate any Overboost, Injection Control Pressure, or Exhaust Back Pressure diagnostic trouble codes under normal driving conditions.
And kudos to you too, Matt, for fixing the problem instead of masking it!
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