Is the brahe vacuum booster leaking? Normally i would think the rpm would be high all the time if it had a vacuum leak but since you're messing with the tune you may be affecting its response.
Is the brahe vacuum booster leaking? Normally i would think the rpm would be high all the time if it had a vacuum leak but since you're messing with the tune you may be affecting its response.
See my truck data in the "My Garage" section here... http://www.ls1truck.com/forums/my-ga...tml#post191709
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