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Spiral flow dyno results.

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Old Jul 13, 2005 | 08:14 AM
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Default Spiral flow dyno results.

ON saturday I dynoed my car with the cutout open and then with it closed through the "spiral mouth" Lost 6 HP and ~10 TQ. I wasnt really sure how restrictive this setup was, I guess its not too bad. 328/338 with the cutout open 321/328 with it closed.
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Old Jul 13, 2005 | 08:17 AM
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At that power level, I would not call that good. At 395 rwhp, I lost 0 rwhp when unbolting my SLP Dual Dual. Are you using just 1 muffler? If so, I think they were designed to be used as duals and that might explain why they're restrictive in a single configuration.
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Old Jul 14, 2005 | 04:19 PM
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Yes im only using one muffler. I honestly expected to lose more than that. The thing looks pretty damn restrictive.
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Old Jul 14, 2005 | 05:21 PM
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Once more mods take place and you start pushing more power thru the exhaust it will become increasingly restrictive. Yes from the pics they do look awful bad.
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Old Jul 14, 2005 | 07:20 PM
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fyi my 3.5" flowmaster race muffler loses 14hp and 10ftlbs to the cutouts
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Old Jul 14, 2005 | 10:20 PM
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Originally Posted by Tally TransAm
fyi my 3.5" flowmaster race muffler loses 14hp and 10ftlbs to the cutouts
slowdisaster......
ive seen 20 on a head/cam car.
they suck.
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