Expected 1\4 Time

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As an example, I ran 13.2 with 250rwkw and T5 but I had an aftermarket clutch. Gear changes were very fast but it took it's toll on the old girl, she spat second gear a few days later

If your main priority is getting an ultra fast time, then smash through the gears and hope the box can handle it (unlikely). On the other hand, if your more concerned about preserving the life of your box (and your wallet) take it easy through the gears and get a slower time. Atleast you know you've got a 288rwkw monster that's street driven