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      05-30-2011, 04:49 PM   #22
AJ@ESS
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Drives: E60 M5
Join Date: Jun 2010
Location: USA

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The ESS VT1-535 is rated at 450whp. It is rated very conservative like all ESS S65 kits to avoid customers not reaching advertised numbers in less than optimal conditions. In reality most VT1-535's make 460-475whp, and if paired with a catless exhaust and a .5PSI pulley upgrade they can easily be in the 490-500whp range.
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