Tech Question here!!!
Ok so today I put in some friction modifier to help get rid of my rear gear whine... and it worked (whine is a lot quieter) When testing the whine on the highway I noticed a nasty vibration at like 70+ worse above 70, I didn't dare go over 75 because it was nasty! Shook the whole car! Also when letting off the gas at like 70 makes a wooooshhh sound but almost grindy... Odd!
So! I need your help trying to find the problem! I will recheck to make sure all of my lugs are tight. Next Ill make sure my rear tires have weights on them so their balanced... After that... I'm lost! My other ideas are Driveshaft/Ujoint problem... Or wheel baring is shot...
Not sure! Could use the help!
CAI, SF3/X3 Tuner, 4.10 Gears, Auburn lim-slip
GT4 Rims (Summer), Stock Rims (Winter)
2 Subs, New speakers all around
1 Great Car 1 Happy Kid
July '12 Mustang of the Month