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have you checked all the sensors incorporated into the exhaust? i used to have the same problem until i put the 2 3/4 inch exhaust on. then i replaced all the sensors underneath the car. havent had a problem since. alot of people dont even think about doing this but your exhaust sensors help to...

the best oil i have used and maintain my gas mileage after actually improving with this oil surprisingly is royal purple 530 synth. it runs smoother,idles smoother and i actually got an extra 1.5 mpg better than mobil 1. weird but it worked.and dont buy grocery store gas i go to ma and pop...

whether racing a strip or just drivin through town i always used 5w30 synthetic royal purple and it seems to give me the best performance for all temperature and gas mileage needs.give that a try.and my engine still runs quiet every morning when i start it up.not to mention how smooth the...