Quote:
Originally Posted by aerohead
I believe that at the time the VX came to market,that the National 55 MPH speed limit was still in force.The VX would have been calibrated for this speed for the Federal Test Procedures at EPA Mobile Sources in order to optimize the EPA HWY rating.
By operating the car at 65 mph,your asking it to perform in an environment that it was not optimized for.
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Speed limits began to go up from 55 in 1987 or 1986, five or six years before the VX engine.
Quote:
Originally Posted by aerohead
You may want to follow basjoo's lead with the aero.You'll get your lean-burn for sure!
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Maybe the lean burn engine was designed with the better aero and taller gearing of the HF in mind?