I have the same truck. 07 5.7 4x4 w/Volant CAI and flowmaster delta 50 cat back exhaust. I always just figured it was the way the PCM was programmed for the high initial idle. Maybe to circulate oil to the top end faster. I usually wait until it idles down to 7-800 RPM to drive it. I also see...
I remove the TB for cleaning every 20-30k on my 2007 3rd gen 1500. Slightly different setup than a 4th gen, but it's essentially the same electronically controlled TB. I wouldn't hesitate to remove it for cleaning. I don't like the idea of a bunch of sticky oil/fuel gunk going down into my...
Maybe driveshafts out of balance? IDK man.
I had some high frequency shuddering in a 2004 Cummins that couldn't be pinpointed either. They also told me it was normal. Long story short, it had a hairline crack on top of the transfer case that got worse and worse until it finally grenaded on me...
Installed one yesterday in my 07 5.7 1500 (CAI & Bully Dog gas GT tuner). Very neat little gadget to play around with! It seems to really wake the truck up in the higher sensitivity levels. Sport+ is crazy responsive and hard to control under stop/go traffic conditions. MDS seems to kick off a...
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