'98 L36. Just finished the LIM gasket, which included a new UIM and gasket, new PCV, new water pump, plugs, wires, thermostat, air filter, throttle body cleaning and fuel injector servicing/cleaning.

Had a very rough idle before the project, now a little better but still rough. Never sounds likes like it's gonna stall, but you can feel the vibration in the seat of your pants more than the steering wheel. Shifting to neutral makes no discernable difference.

Scanned it and no codes, no hesitation on acceleration, no drivability issues. Only thing I could find was the purge valve started a fast ticking noise when the idle started to go rough, so I'm thinking of dropping $25 on that.

Idles smooth when first started, doesn't get rough until she's been run a while and waiting at a light.

Any ideas, or is this is as good as it's gonna get. 153k miles, no mods.