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Old 05-14-2004 | 05:56 PM
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Detcord
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Joined: Jan 2004
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From: Anaheim Hills, CA
Default mach 15 engine speed

What rpm is the mach 15 that comes in the xxxnt sport supose to spin up to? mine seems to be spinning real slow.... like it only takes about 10 feet and it wont climb anymore...im gonna say its at around 18k rpm... all the other engines i hear seem to spin alot faster, i thought it might be too lean or something but it stays around 250 degrees so iunno....