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JB4 help
I have bought a JB4 and i got it installed i have been running it on map1 it was working fine for the past two weeks. the other day i was driving and i down shifted the car to accelerate and service engine soon light comes on and the car starts to vibrate and acts wierd. so i turned off the car and the light went away. therefore, everytime i push the gas pedal all the way i get the same problem. but if i turn off the JB4 and push the gas pedal i get no problem.please help if any one has encounter this problem before.thanks
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