You know i run a big wing at the back and dont reach the same speeds as you, mines geared for 116mph@7000rpm.
i would not not race mine with out as it makes thats much difference. I ran it at north wheld drag strip and ran 14.00 [no quicker than it was running with the wing] the run was fine but when i lifted off at the top end [only 86mph] it tryed to swap ends on me. I drove straight back to the pits and bolted it back on.
It may look ugly and out of place but it works and works well, the front spolier/splitter along with the rear wing made a 4 second improvement at Prescott hill climb which is under a mile long.
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