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Old 12-16-2000, 11:08 AM   #1
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CFM #'s for mufflers and dyno numbers from Car Craft

Flow #'s at 28 in. of h2o

Dynomax Race Magnum - 528 cfm
Thrush Magnum Glasspack - 507 cfm
Summit Fully Welded - 343 cfm
Flowtech Afterburner - 342 cfm
Dynomax Super Turbo - 333 cfm
Hooker Competition - 232 cfm
Summit Turbo - 309 cfm
Thrush Boss Turbo - 297 cfm


Peak #'s on a 350

Dynomax Race Magnum - 409 hp 394tq
Thrush Magnum Glasspack - 409 389
Summit Fully Welded - 415 390
Flowtech Afterburner - 409 391
Dynomax Super Turbo - 412 387
Hooker Competition - 397 381
Summit Turbo - 405 383
Thrush Boss Turbo - 407 384


Avg #'s on a 350 from 2,500 to 6,000 rpm

Dynomax Race Magnum - 298 hp 366tq
Thrush Magnum Glasspack - 297 365
Summit Fully Welded - 295 362
Flowtech Afterburner - 294 361
Dynomax Super Turbo - 292 358
Hooker Competition - 286 351
Summit Turbo - 291 357
Thrush Boss Turbo - 292 357

Well there you have it!

Later.

Aaron
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Old 12-21-2000, 11:11 PM   #2
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What pipe diameters?

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Old 12-23-2000, 11:19 PM   #3
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Those are for mufflers under $40 ,hence no flowmaster , hooker aerochamber, borla ,B@B ,mufflex, ect...
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Old 01-01-2001, 04:38 PM   #4
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What month was the issue that had all that good info? Did it show any sound level comparisons too.

Thanks, and Happy New Year.

Jake

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Old 01-01-2001, 11:59 PM   #5
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I've got a "muffler shop special" 3' intermediate pipe with no cat and a 3' race magnum on my GTA. It doesn't sound the best I've ever heard but it came that way, after I got the car I cut the tailpipe off and at parking lot speed barely riding the brake it rattles tin roofs (SONIC DRIVE IN) and sets off car alarms. AWesome sound like that and very throaty when I get on it.I'd recomend it for that but it's still not exactly the sound I'm looking for.
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Old 01-02-2001, 12:08 AM   #6
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Not much but good reading concerning the topic.
http://www.calgarydragracing.ab.ca/exhaust.html


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Old 01-02-2001, 12:08 AM
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