Damn, that's a big increase. I might have to "accidentally" raise the pressure on my parent's cars and see if it makes as big of a difference. I secretly raised them from the factory 28 or whatever to ~35 already. I have my own car at 36/40 and refuse to pump it higher since the ride is crappy and most of the gas goes to spinning the engine up past 3000rpm thanks to the stupid gearbox.
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