Driving my Evo x on the interstate when pulling a hill makes me want to drive a car off a cliff. I own a fully built Evo 8 and that car is way smoother than this evo x. I bought the car off of an idiot and im going through trying to fix all the problems he passed onto me with out telling me. If it set the cruise on this car at 70mph it bucks and jerks when pulling a hill. The sound is vrooom ch ch ch ch chchch vroommm ch ch ch ch chchchch constantly over and over again lol. The tial is VTA and im not sure what spring is in it. I have searched and searched but no one ever seems to have a definite anwser on how to fix it or what BOV works best. The car only has mild bolt ons and was tuned at Buschurs at 25psi.