OK i put on my HKS exhaust and also my new polished plenum...i drove it bak home over night and i noticed it was bogging alil...the next morning i drove my car to class and then the middle of the highway my RPM jus sky rocketed to 4k but my car didnt move...than it started to bog out alot now i cant go passed 65 MPH or else it bogs bad!!! wats goin on??