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Kooks Stepped 1-3/4 to 1-7/8 vs QTP 1-3/4 HVM

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Old 05-28-2005, 07:21 PM
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Default Kooks Stepped 1-3/4 to 1-7/8 vs QTP 1-3/4 HVM
Has anybody tested these yet with a big cam? I know Kooks recommends 1-3/4 stepped to 1-7/8 for big cams, and QTP offers the High Velocity Merge on its 1-3/4" for gains, but are there any real benefits over just a 1-3/4" header? The price of these is well north of $1k so I was just curious if there were any actual performance improvements?
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Old 05-28-2005, 08:07 PM
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i gained lots of power from going from a jethot/hooker Y setup to a QTP HVM header and True merge Y...
well worth it IMO
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Old 05-29-2005, 07:45 PM
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Awesome Durien, what was the gain?

Any others?
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Old 05-30-2005, 02:24 AM
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They worked for me!
https://ls1tech.com/forums/dynamometer-results-comparisons/292204-fast90mm-qtp-hvm-lt-s-real-deal.html
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