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  1. J

    Roush Series IV Cold Air Kit: Gauging Interest...

    Well we just got back from the dyno test. The under the hood set up jumped power up by 8-10 RWHP & TQ through out the rpm range. The full JLT True cold air bumped power even more. From 4000 rpm and up gains were from 10 RWHP to as much as 15 RWHP. TQ gains were big too. From 4000 rpm and up...
  2. J

    '04 Cobra SVT Cold Air Intake

    All 03's don't have the same boost levels. Plus he had a X pipe which helps air flow and can lower boost levels. If you can make the same hp#'s with lower boost levels your more efficant. When I had just the JLT and Bassani catted X and cat back I had 426 RWHP!!!
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