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bright-
Isn't it cause they saw it on some tool's YouTube vlog and insta and thought it looked cool.
Or is it an actual real thing?
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It was a common thing to do on race cars so the red line was straight up. I think a lot of classic 911 race cars had that and GT40s, but certainly not restricted to just those cars.
hugo7
NurseHolliday
I found a picture I took trying to show the problem: