Other details that can take place with a increase in ET which of course produces a increase in G force on the car during a pass and especially at the green light can be finding out the limit of what you fuel pressure can over come in terms of G forces.
At 2 Gs which is like a car that can run in 9s in the 1/4, a fuel system will drop .3 psi per ft of run that it makes getting up to the carb inlet.
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I do stuff for reasons.
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