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i have a 98 mark viii lsc ever since i reflashed the computer with my xcal2 its been having this weird problem while coasting
if i dont touch the gas and coast for say 10-15 seconds in drive the engine seems like it bogs down and when the car slows enough for the rpm to reach around 1100rpm the engine rpm bumps up and down between 11-1250 but as soon as i touch the gas it stops and wont do it again untill i again coast for the period of time, it only does this with the tune on and i know they tend to exaggerate small issues but has anyone had a similar problem or have any idea of what might cause this? its a really annoying issue.
if i dont touch the gas and coast for say 10-15 seconds in drive the engine seems like it bogs down and when the car slows enough for the rpm to reach around 1100rpm the engine rpm bumps up and down between 11-1250 but as soon as i touch the gas it stops and wont do it again untill i again coast for the period of time, it only does this with the tune on and i know they tend to exaggerate small issues but has anyone had a similar problem or have any idea of what might cause this? its a really annoying issue.