Didn't realize it left a coating like that. Pretty neat process. Works really fast too, like an hour a car fast.
Think I figured out the problem with my Zed; that being the new injectors. Not sure if I didn't lube them enough or what but they aren't seated quite perfectly and apparently that makes a big difference on these cars. Drivers side was easy enough, but now I need to remove just about everything to get that stupid Stillen manifold off just to get at the passenger fuel rail. Three minute job will take a few hours.