My car was missing kinda bad when i would get on it and run it up to about 4500 rpms, i put in new plugs and it didn't help, i've been running regular unleaded since i got the car 2 months ago so i decided to put in chevron supreme, it seems to have gotten of pretty much all of the miss, does this sound right? Are we supposed to use only supreme in our cars?

 

thats all i use, sunoco 94 octane, hows yr wires? fuel filter? just do the basic stuff and yr car will run better im sure throw a bottle of injector cleaner to

 

you ahve OBD2.. get it scanned and that should tell you alot.