Exhaust Advice Needed??? - Page 2 - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


Performance, Brainstorming & Tuning Talk about modifications, or anything else associated with performance enhancements. Have a new idea for performance/reliability? Post it here. No idea is stupid! (please use Detailing and Appearance for cosmetic ideas)

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Old 09-11-2003, 09:14 AM   #11
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ya, from the magnaflows i heard in person, i like my flowmaster better for sound
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Old 09-11-2003, 01:50 PM   #12
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I'm just the opposite. I've heard both, and preferred the Magnaflow. Dynomax isn't bad, I've owned a couple of them.

It'* all personal preference, and whether or not you run a high flow cat or resonator. Either or both of those can drastically affect the sound you get.
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Old 09-11-2003, 09:12 PM   #13
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Quote:
So high flow intake that is a proper CAI and polishing the upper, lower intake, then with the exhaust manifold coated. This will add "some" hp.
Could you define "some" for us? Be realistic if you can.
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Old 09-11-2003, 09:17 PM   #14
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Magnaflow on its own is barky, OK, but its go big or go home, do the high flow cat, get some nice pipe...get a Magnaflow, and get a nice tip option to correctly harmonize the sound and maximize performance.

I remember the meet that I held. Our late night cruze feature my RLD (driven by its new owner SpoTT) in the lead. Hailey and Rob were tailing....and I was told it sounded GOOD...like REALLY good.

Plus the sound off, lol, never got about 3500 RPM and still OWNED the field...lol, sorry Rob and Mike...lol
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Old 09-11-2003, 10:00 PM   #15
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Funny how we end up talking about sound with performance exhaust setups. Isn't it all about performance anyway?

My exhaust guy races in the Nascar NW division. Has access to a flow bench and dyno. He tested a Flowmaster 80 series and a Magnaflow (both for the F-body) on a Series I L67 Buick Riviera (95). The Magnaflow had a higher bench flow rating (don't know how much) and 5-8 hp more at the wheels than the Flowmaster, depending on which 'run' he looked at.

The Dynomax'* are generally known to have poorer flow than the Magnaflow or Flowmaster. Dynomax is built for sound. Dunno why they did that. Walker (who makes them) used to be known for purely performance, but I guess you go where the $$ is.

So your choice of muffler CAN cost you 5hp or more. Will you know it in the end? Maybe not. You have to balance your preferences for performance and sound. If you can get both, even better.
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Old 09-12-2003, 10:36 PM   #16
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Has anyone heard or does anyone know if the Summit turbo mufflers are any good?
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Old 09-12-2003, 10:52 PM   #17
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I don't think they make their own. With a little investigation, I think you'll find they're made by one of the big three above......just a gut feeling.
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Old 09-12-2003, 10:57 PM   #18
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I'm sure your right. I seen them advertised for cheap on one of my summit racing catalogs. I never seen who they were actually made by. I know thrush is made by dynomax. Dont know who makes summit turbos. I thought about buying this muffler or the thrush. I want something low cost yet more flow.
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Old 09-12-2003, 11:13 PM   #19
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Quote:
Originally Posted by h1081dan
I'm sure your right. I seen them advertised for cheap on one of my summit racing catalogs. I never seen who they were actually made by. I know thrush is made by dynomax. Dont know who makes summit turbos. I thought about buying this muffler or the thrush. I want something low cost yet more flow.
Summit TURBOS? Ok, the two Quad 4'* I've owned have both been graced by a Walker TURBOmax. Same company as Dynomax. You may have just answered your own question!
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Old 09-14-2003, 12:12 AM   #20
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Can you guys just explain what is the middle muffler between cylysator converter if it is spelled like that and the finnal muffler. Does it make difference if you add a finnal muffler tip expensive one
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