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Old 05-13-2008, 11:54 PM   #93 (permalink)
Bogie
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Quote:
Originally Posted by lostcause View Post
So realistically, what kind of performance gains could we expect to see from a 28-30 hp increase? All in all that really doesn't seem like a whole lot. It's just over 10% but will this 10% increase in power give a 10% increase in performance? What might I expect in 0-60 and 1/4 mile improvements?
I came across an interesting "approximate" equation for predicting HP based on trap times, or backing out trap times from HP.

Let's assume a current stock RL delivers 230HP at the wheels and a 180lb driver. The equation estimates a 1/4 mile in 13.98.

Let's assume the upgrade delivers 260HP at the wheels. The equation estimates a 1/4 mile in 13.42.

Given these are rough approximations, it looks like you should shave your 1/4 mile time by half second.
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