For years I've run the oil crossover tube, and kept it when I went to big oil. Recently I worked on tracking down an oil leak, and one of the leaks I found was coming from the crossover. So I removed it, and re-installed the plugs back into the oil rails.
As a result, my truck will sometimes stall as it returns to idle... such as coming to a stop sign or a stop light. With the crossover tube, it always had a very slight dip as it returned to idle, but never enough to stall the engine, and hardly enough for anyone else to notice (my wife never once noticed it in all the years she's been driving my truck). Now the idle dip is extremely pronounced every time I come to a stop, and the stalling is starting to piss me off. It does this in any tune, including stock. And it started immediately after I removed the crossover tube.
I haven't decided if I'm going to put the crossover tube back on. It's in the way when I'm working on my truck, and I'm about to tear into it again anyway, so I don't feel like hassling with it.
Basically I need some help on which direction to go with the duty cycle table to try and smooth it out, and help it return to idle without being jumpy, without dipping RPM's really low, and without stalling.
TIA for any help!
