so the wife calls and "all of a sudden" says she feels a bad vibration in the gas pedal and a loud humming sound..had new nitto 420's put on about 3 weeks ago and havent had a problem with them thus far..trans has already been flashed when i bought it a couple years back..has anybody had any similiar issues? do you think it needs to be flashed again..i havent had a chance to look at it myself or hear it due to me being at work..let me know what yall think..thanks..