Car was getting painted and sat for like 3 months almost outta gas...got car outta the paint shop....ran fine (or @ least as good as it has ever since removing my procharger 20k miles ago...still has flash for procharger in it...never gave any real problems though)....last week cars starts to kinda hesitate under load, kinda like a miss...i figure its time to change the plugs again since it runs a little rich from the tune...i had denso 22s in it and i bought denso 16s to go back in it...didnt check before i bought em but the 16s showed as the oe plugs. today i change the plugs and while im @ it i clean the mass air sensor (just for the hell of it)....now the car has no power...it revs out fine but has no *** whatsoever....if you go to high gear @ lower speeds and roll on the throttle it hesitates....NO SES LIGHT....??????....bad gas?....new plugs dont burn as hot as old ones therefor making problem worse than helping solve it?....anyone?

 

also as stated in the title, car takes too long to fire....spins over much longer than it should? fuel filter? idk....

 

Try new gas?

 

workin' toward it lol...still got a 1/2 a tank

 

Try some octane booster. It also could be water in your fuel tank.