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Message: [QUOTE="The Brad, post: 1172350, member: 14154"] In November 2013, I installed PIS 200/80's, a 38R, 910 springs, and a few other goodies in my sig. Since then, I've had intermittent rough idle, excessive EGTs, hazing and raw fuel smell during the brutally cold Southern California mornings (50f). I used AE to identify high Perdel readings and swapped injectors to see if Perdel followed the stick. Warrantied 3 injectors and no more high Perdel readings, but I still have an idle that ranges from near perfect, to sounds a little rough, to a lope that shakes the whole truck as if a couple of cylinders quit firing. I worked with Jody/DP on tuning, tried PHP, and eventually had Jody Live tune it. Jody mentioned that he had to do some weird chit to make it run right. Fuel pressure stays around 60 in daily and tow tunes. 100hp tune drops it to low 50's, and the all out tune will drop it quick. I have a second Bosch pump to add, but I want solve these other issues first. With stock injectors and built stock turbo, I could pull my 26ft toy hauler (7.5k empty, 11.5k loaded) up Cajon Pass (6% grade on Interstate 15) and hold 65 in drive, keeping EGTs at or under 1200*. With the current set up, I have to drop to second gear and keep rpms over 2600 to keep it cool. When it idles smooth, I notice more power for a given throttle position and the EGTs are equal in both banks, but when running rough and towing, I've seen the odd bank range from up to 100* warmer while running, to 90* cooler at idle. I've replaced ICP sensor, IPR, CPS, EBP sensor,hutch mod, FRx and no difference. I have some idle videos to upload here in a bit. [/QUOTE]