I have 99 TL and jsut did the full tune, water pump, timing belt, plugs, coil packs and the CIL came on. Misfire on #1 & #3 cyl. have run 2 tanks with fuel injector cleaner and not fixed. Car is starting to jerk also. I'm going to swap the coil packs before I go and replace the injectors. It is way too coincidental that this happened after the tune up. I am getting great gas mileage now after the tuneup though. any help would be great on this subject.