Quik....
Is it limited by the needle in the speedometer or computer? When I changed my tires/wheels, up sized, my car was cutting at the same as before 148, BUT, I know for many facts, that my car was actually going 5-6 miles slower than what it was reading in the speedometer... It got fixed when I Xcal'd it. I was clocked by many radars and I was going slower by about 6 miles than it was showing inside. So the needle would go to the usual, but my speed was actually slower. I was clocked once at 141, but inside, the car was marking 148-147. After I reprogrammed with the xcal2 with the right size tires, then it became normal, I even felt the difference. Could it be possible? I've been tempted to slide a pin to stop the needle at 140 and see if the car will go faster than usual. I have my sister in law willing to clock me to try it. She's a County Sheriff Here. And also, why do the LS vary some much by car as far as what they'll hit at top speed. I've seen a difference of almost 10 miles in some cars the same model and year...