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I've had this trouble code pop up twice now and I'm wondering if this is a serious problem or is there something I can do to avoid having my check engine light come on every other day.
Have you double checked to make sure that all of the purge solenoid connections are still tight after your Magnuson install (where the hose goes into the supercharger case and both sides of the solenoid as well as at the back of the right valve cover), I know when I connected the purge solenoid, both ends of the hose were stretched pretty tight and would pull loose with just a little touch so I stretched (took the kinks out) and secured them with zip ties to make sure they don't move. :cheers:
Just checked everything and it's all tight. I'm not sure what it is, but it's only popped up during my 25-minute drive with the cruise-control set at 70 mph.