its booked into HQ performance next tuesday, i wasnt getting any running issues but now i am.. yesterday idle was acting strange, randomly sitting about 500rpm, vacume at -15psi instead of the usual -20, then it started to bob up and down a little and gradually drop until it cut out. it restarted just fine though. i have to use it for work this week so this morning from cold ging down the expressway gradually building revs in 3rd about 2000rpm it hesitated a few times and one point it made the dump valve go which was very strange! im gonna check the plugs are clean even thought they are fairly new. any thoughts?