Originally Posted by airforcegreen09
Could be many things. Battery, air flow sensor, tune, sounds like the sensor did you just recently add a cold air intake?
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So battery is new, I just also replaced the belt tensioner because that had some movement in it and sounded like it was grinding at higher rpms. CAI has been in for a long time, the tune maybe the cause I started to notice it more after it was updated now that I think of it.
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