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Old 09-18-2005, 02:49 PM   #9 (permalink)
Multiades
vehicular thaumaturgist
 
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Join Date: Apr 2000
Location: Woburn, MA
Drives: 1994 Stealth TT
Trader Rating: (17)
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Default Re: Measuring stock exhaust restriction

Quote:
Originally Posted by bluemax_1
So there we have it folks. Definitive proof that the stocker is not only one heavy-ass POS. It's also a POS air-flow wise. I like my ATR single-shot.
Not that the ATR isn't nice, but as I just mentioned, it doesn't compare favorably to the minimalist one-bend exhaust my friend has been producing.

The only possible compromise with this one-bend exhaust is noise cancellation versus weight. The largest (longest) possible muffler I could find weighs about 17lbs, but is very, very quiet. If you want to shoot for light weight, you could get a 2.5-3lb burns stainless muffler, but it would be REALLY LOUD. Either arrangement should flow equally if you use a straight-through muffler (stainless wool around a perforated core), but one will be louder and lighter, while the other will be quieter and heavier.

My friend used a Magnaflow muffler (as did Brian) that is 36" long overall (it's HUGE), and made out of 409 ferritic "stainless" steel unlike the ATR which is a much nicer 304 SS. The Magnaflow is a bargain and can be found for under $100 shipped.

-Chris
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The Pansy Patrol - a 3000GT/Stealth car blog with how-tos

Pearl Yellow 1994 R/T TT w/84k - FOR SALE! new 4-Bolt factory short block, DR StgII heads, Titan TD05 headers, 14B turbos w/ ported 7cm^2 housings, 3" minimum-bend catless exhaust, SCE oil pan, RPSII clutch, Fidenza flywheel, OZ F1 Plus 17x9.5" wheels, Kumho Ecsta MX 245/45 tires, Drweldin DSM SMICs, 3SX engine mounts (Maximal solid front), GReddy 60mm P/H/W boost, Carbotech Panther Plus & Bobcat pads w/ slotted/drilled rotors, KSport GT-Pro coilovers, Maximal rear camber arms, SCE balljoints, ABS delete w/ cockpit-mounted Wilwood proportioning valve, AC delete, EGR/evap/dashpot delete, cruise/vacuum-tank delete, '95 Lexan headlights, McCulloch 4300K HIDs, GReddy Type-S BOV, solid shift bushings; Misc Parts: Walbro341, 20# fixed-back seats, Accelerated Moto catch can
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