Exhaust, muffler recommendation

[No disintegrations]

I went with the 3 muffler exhaust , No drone what so ever on the highway and super quite.. I'd say more quite then factory, Perfect for a sleeper as I didnt really feel any power loss with this setup.

I suggested this and was slapped down.

 

[eagleguy]

Dynomax VT 17156 vs. 17956. Has anyone had any experience with these mufflers on a stock or mild build vehicle with a single downpipe set up? Heard the 17156 has a lighter spring than the 17956.

 

[~JM~]

Are they a chamber type of design, or a straight through design?

A turbocharged engine should have a straight through design.

Have you considered installing a straight through 3" muffler in place of the test pipe? Find one with a stainless steel wool type of damping material.

http://www.superchevy.com/how-to/exhaust/0505phr-exh/

 

[eagleguy]

Are they a chamber type of design, or a straight through design?

A turbocharged engine should have a straight through design.

Have you considered installing a straight through 3" muffler in place of the test pipe? Find one with a stainless steel wool type of damping material.

http://www.superchevy.com/how-to/exhaust/0505phr-exh/

They are a straight through design. http://www.dynomax.com/mufflers/dynomax-vt-mufflers

 

[~JM~]

I wouldn't use those mufflers on my car.

What is the flow path when the spring loaded flapper valve is closed?

 

[eagleguy]

Why?

 

[jlat]

and the idle and rev video

hello; Are you using a test pipe?
thanks

 

[eagleguy]

yes. The system is 2.5" SS Pypes with 2 Pypes Race Pro mufflers and a Pypes SS test pipe. All going off a single downpipe which splits to a dual exhaust at the rear and exits at each wheel.

 

[jlat]

yes

hello again; No drone or any other complaints with the TP?
IBBY

 

[eagleguy]

hello again; No drone or any other complaints with the TP?
IBBY

Drone is the issue at 1800-2000 RPM.

 

[jlat]

Drone is the issue at 1800-2000 RPM.

hello; In the near future could you post a sound clip of the drone if possible?
thanks
IBBY

 

[~JM~]

Why?

Don't like the design. Want a true straight through design. No baffles, chambers, or flapper valves to restrict turbine discharge.

Still think you should consider replacing the test pipe with either another straight through muffler, or a de-resonator.

 

[Toby_Goodmk]

hello; Are you using a test pipe?
thanks

yup, I have 3" all the way from the Turbo out.

 

[eagleguy]

Just going from a 3" to 2.5" exhaust changes the sound and drone, does it not?

 

[69RSCLONE]

Not that it will help you at all, but my pypes system with the race pros has horrible drone at 35-45 mph, 1800-2000 as well. No tips. Rjc 3" DP, PYPES included test pipe. I don't think that removing the tips will help. I just try to avoid slow traffic. Lol

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[No disintegrations]

I took my 2003 v8 Durango for a long trip this weekend. If I listen carefully I here that drone also. Stock exhaust system. Only one muffler two cats. 1600-2000rpm
I think all 90 degree v engines have this problem hidden to some extent or another. Just a factor of light load and that rpm window.

 

[eagleguy]

Not that it will help you at all, but my pypes system with the race pros has horrible drone at 35-45 mph, 1800-2000 as well. No tips. Rjc 3" DP, PYPES included test pipe. I don't think that removing the tips will help. I just try to avoid slow traffic. Lol

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Which system has the drone? I am leaning towards the Dynomax 17956 VT's as I would like to save at least some of the Pypes SS system. They are almost the same size as the Pypes mufflers they would replace.

 

[69RSCLONE]

The same as you have right now. PYPES with the race pro mufflers. I have had it on for 2 seasons and seems to drone more as it ages. I run dual 2.5" on my 383 camaro with 2-18" long 4" diameter MagnaFlow mufflers and it's way more annoying at cruising speed, deafening. But at least a V8 sounds good. I don't want to hear anything from this 6 other than the turbo whistle. I'll be waiting to hear that magic drone canceling trick. As said many times already, the 3 muffler system is the only thing that works. I might try it next year.

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[Justin85]

3 Muffler exhaust is stupid quite and sounds good under boost

 

[Turbo6Smackdown]

Insulated the trunk and still have drone noise at 1800-2000 rpm. So much for research telling me the Pypes system with Race Pro mufflers had the least drone as its actually worse than the no name pitted unit I replaced!

YUP. Im on here now researching a replacement for my race pros. Maybe street pros who knows.