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How can I work out the top speed of my 33 GTST with Stand Box when my ECU backs the Rev of at around 7200 rpm..( my tyres are 235-40-17) ? Anybody tried the top speed on one??? I just never been on a track and never have found a road safe enough to do so....
 

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Check your road speed at say 3k rpm, then again at 4k rpm, in 5th, work out the ratio and there you have it.......

150mph give or take.
 

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Know of a few OZ guys claiming around 160ish. In theory the only restriction is the gear box, bolt a better one on and it should be more:D
 

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top speed

i have twice seen 160 on clock ask eyore on forum as hes been in car both times,is posible bu i would have thought more like 150 due to speedo inacuracy but still fast enough


lee
 

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160mph

I've seen either 253 or 256 kmh on my Ultra Speed Meter in my R32. That's around 160mph
 
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