we aren't aerodynamically limited , and if by chance we are it's at a speed higher than even heavily modified cars can produce.hayalex6 said:you don't need one for the xB, as we are aerodynamically limited, not goverened by the ECU.
the manual says 107. MANY stock boxe's have goen faster than that. i've gotten mine up to 127/130ish , that was a long time ago when i was slow , lolhayalex6 said:seriously, it is aerodynamically limited. even says so in the manual.
goto an oval track and get to 120 mph, stock engine just can't do it.