Borla, Pypes, Dynomax/Walker - Page 2 - Chevy Impala SS Forum
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post #11 of 22 (permalink) Old 01-05-2016, 02:02 AM
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Well, I had ended up getting a Pypes X-pipe, Pypes Street Pro mufflers, Walker 2.5" tailpipes, and Walker resonators. I just got it back from the shop (I have no welding equipment or experience), and the Pypes X-pipe was unusable (poor fit), and I think the system is too loud, especially with an awful drone around 1900 or 2000 rpm. I guess it beats my rattling stock exhaust though. Don't think I'll be buying Pypes anything again.

Maybe in the spring I'll try something else. Those Dynomax VTs sound good based on the videos in that thread, but the idea of a flapper valve doesn't sit too well with me. Are they quieter than the Ultra Flos? Comparable to stock?
Too bad I didn't see this post earlier.
The Street Pro mufflers are said to be significantly louder than the Race Pro on partial throttle and idle.
I have a camaro with 383 and a full Pypes 2.5" X-pipe system with Race Pro, and there is no drone while cruising at 1500-2300 RPM.
No resonators.
Loud at WOT.

Love them, but they're too loud for my Caprice.
With resonators and cats, they might be perfect for somebody who wants performance sound with an acceptable noise level for a DD.
I want mine to be a little more quiet than that.

Kai
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post #12 of 22 (permalink) Old 01-05-2016, 10:07 AM
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I put Walker Dynomax Super Turbo's on my Lincoln and got approx. 10 years, 100,000 miles out of them. I am now on my second set. I also put them on my rarely driven, 79 trans Am. (Stock pipes on both cars).

IMO they sound great, little rumble at idle and accell, quiet at cruise.

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post #13 of 22 (permalink) Old 01-09-2016, 10:51 PM
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Quote:
Originally Posted by AP9 View Post
Well, I had ended up getting a Pypes X-pipe, Pypes Street Pro mufflers, Walker 2.5" tailpipes, and Walker resonators. I just got it back from the shop (I have no welding equipment or experience), and the Pypes X-pipe was unusable (poor fit), and I think the system is too loud, especially with an awful drone around 1900 or 2000 rpm. I guess it beats my rattling stock exhaust though. Don't think I'll be buying Pypes anything again.

Maybe in the spring I'll try something else. Those Dynomax VTs sound good based on the videos in that thread, but the idea of a flapper valve doesn't sit too well with me. Are they quieter than the Ultra Flos? Comparable to stock?
The VT's are an Ultraflow when the valve opens, but when cruising they are near stock noise levels. Thats the whole benefit of the VT's valve. It lets the exhaust flow like a wide open muffler on heavy throttle when you need the flow and then when you let off and cruise on the highway the valve slams shut and forces all the exhaust to go thru the sound deadening material and cancels most all of the noise out.
Mine has no cats and its Nascar loud under full throttle at redline, but on the highway cruising at 60 mph its silent in the cabin. Its the best of both worlds. If you let the cats on, yours won't be real loud even at redline or under load.

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post #14 of 22 (permalink) Old 01-31-2016, 02:45 PM Thread Starter
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Good information, I appreciate it. Call me crazy, but I am not completely ruling out starting over and going back to stock (2.25" to muffler, 2" on back) since the powertrain is completely stock and will be forever.

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Stealth bolt mod, 2.5" X-pipe with Pypes Street Pro mufflers & Dynomax resonators, Weathertech side window deflectors, Hayden 678 "tertiary" transmission cooler & Magnefine inline filter, otherwise completely stock
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post #15 of 22 (permalink) Old 02-01-2016, 02:06 PM
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Quote:
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Good information, I appreciate it. Call me crazy, but I am not completely ruling out starting over and going back to stock (2.25" to muffler, 2" on back) since the powertrain is completely stock and will be forever.
Unless you buy from a junk yard, the stock exhaust will be the most expensive to replace.

Last I checked (12+ years ago) the stock cat-back was about $800. And did I mention that this was 12+ years ago?????

Just so you know.

Now.....if I were looking for a stock replacement cat-back.....I'd get on Summit Racing's cite a piece together a Walker/Dynomax system.

But hell....that's just me .

KW

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post #16 of 22 (permalink) Old 02-09-2016, 12:09 PM
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Quote:
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Good information, I appreciate it. Call me crazy, but I am not completely ruling out starting over and going back to stock (2.25" to muffler, 2" on back) since the powertrain is completely stock and will be forever.
Get the Dynomax system, it's exactly what you want. It's relatively quiet with no drone if you still have cats. The only downside to it is no "H" pipe, just have any exhaust shop add it in if needed.

And it's still available, http://www.amazon.com/Dynomax-17375-Exhaust-System-Kit/dp/B000CIR3AU


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post #17 of 22 (permalink) Old 02-09-2016, 01:42 PM
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Just ordered the Dynomax system piece by piece from RockAuto, and saved a lot of $$$ compared to ordering the kit.

Only thing was that I ordered the last of one of the pipes. Hope they restock soon..

Sent fra min SM-G925F via Tapatalk

Kai

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post #18 of 22 (permalink) Old 03-30-2016, 02:47 PM
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Quote:
Originally Posted by CamaroKid View Post
Just ordered the Dynomax system piece by piece from RockAuto, and saved a lot of $$$ compared to ordering the kit.

Only thing was that I ordered the last of one of the pipes. Hope they restock soon..

Sent fra min SM-G925F via Tapatalk
Wondering if you got PN 54017 (left OTA 2.5" pipe), it's not there, and it's keeping me from buying all the pipes.

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post #19 of 22 (permalink) Old 03-30-2016, 03:46 PM
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I bought my Dynomax OTA pipes on Ebay, which were the same price as Rockauto. There was a few still left on there last week. I have to say Dynomax makes a reall good quality product. I had the same issue where the Pypes X Pipe did not fit worth a crap. My Muffler guy had to hack the heck out of it, to fit right. I would have saved money and been better off just letting the muffler guy fab up an x pipe.

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post #20 of 22 (permalink) Old 04-02-2016, 11:04 PM
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if you drive in the winter, on salted roads, might think twice about the dynomax kit. i had it on my white 9C1, which i had through one winter before it got rear ended. they weld the hangers to the back of the mufflers, which is just thin sheet metal. they broke/rotted off in less than a year.

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