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Showing results for tags 'low rpm until warm'.
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Some of you may remember my "slightly disappointed with MPG" thread. My first fill-up since then I got 16.8 mpg, up from 14.2, just changing my driving style and installing a AFE stage 2 about halfway through the tank. Better, but not good enough yet. Still have to pinpoint the leak behind the head, not sure if it's at this banjo bolt which I have yet to find with my mirror lol, or the return line T fitting. So I'm expecting gains yet and still adjusting my driving, but good results so far.Anyways, I'm having a slight issue in low-mid 70 degree weather. Not only does it take noticeable longer to warm up, but it also flattens out at 1400 rpms or so through all the gears until it warms up substantially. This may just be normal for these trucks, but I've had it since last spring and it doesn't do it in summer 80+ degree weather. The Juice limiter is turned off, so it isn't that. It didn't do it quite as bad in the spring in similar weather, maybe it's the cooler air from the AFE being pulled in? I'm just worried that if it is doing now, how much worse will it be in the 20's and 30's?