what are our engine best speeds to race at?

what are our engine best speeds to race at? (55k)
I mean from a dig?
20-40 upwards?
1/4 mile?
to click the kick down button or not?
what gears are the strongest?
From what i have red here, most say to keep it in auto (s) and let it do the business, even use comfort suspension
also to drive it with engine cold or worm?
i believe i heard a few people like to refer to it as cars sweet spots?
I would say start from second gear
If you start from a dig you might lose some time spinning the tires
Better not to race on those summery days of kuwait 140 Fareheits!! lol
sorry if its a nooby question

Thanks for the explanation
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Got no idea on these things
And not willing to let anybody play with it... mind you dubi seems to have the business. Any one have an experience with the dubi tuners?



