LAT

Has anyone seen or tried these, look interesting.

Levino

<a href="http://shop.ruf-automobiles.com/partlargeimage?id=143" target="_blank">http://shop.ruf-automobiles.com/partlargeimage?id=143</a>

tom_993

What's up with the cross pipe and bypass valve? Does anyone have more information?

Tom
'95 993

H20NOO

Turbo mufflers?

MC

TomF

I hope this is what I think it is. I had heard that someone was working on a sport muffler system with a "straight-through" bypass valve system that can be operated electronically. It would be great to be able to open up the exhaust for some more power (and sound!) out on the open mountain roads... There is a similar system for the 996. I don't understand the pipes, however.

edit... Now that I look more closely, the pipes appear to be some kind of heat shield.

H20NOO

Upon closer examination, it appears the crossover pipes simply link the "in" pipe to the "exit" pipe and contain what looks to be a vacuum or electro-mechanically operated butterfly valve. If that's the case, when the valve is opened, exhaust could travel directly to the exit side of the system, eliminating back pressure and increasing volume. The location of the valve (if that's what it is) suggests that this is not a muffler bypass system, but rather a backpressure relief system. Exhaust would still travel through both the muffler and the relief pipe simultaneously.

The two aluminum items appear to be heat shields.

That's my best guess.

MC

LAT

</font><blockquote><font size="1" face="Verdana,Tahoma,Helvetica">quote:</font><hr /><font size="2" face="Verdana,Tahoma,Helvetica">Originally posted by Silver Bullet:
<strong>You just bought mufflers... </strong></font><hr /></blockquote><font size="2" face="Verdana,Tahoma,Helvetica">You are 100% correct I did just buy mufflers, BUT, I came across the Ruf when I was doing my research for a replacement for my Maxflows and thought I would find out if anyone has any real life experience with them.

I emailled Ruf and asked for a price some time ago and have never heard back.

BTW as you may have concluded by now, I am always searching, the thought of stock sound with the ability to have a straight pipe on demand is quite appealing. Let's hope someone knows more.

Cheers
Levino

LAT

Okay these are facts just in hot off the press at Weissach-Ruf.
Price $1,650 USD or $2,350 CDN
Features a valve that opens and is actuated by an electric switch connected to the rear spoiler harness. If my AltaVista translator is working properly the valve opens at 130 Km/h (80 mph) and closes at 70 Km/h (43 mph).
Ruf claims 7-10 hp according to the sales person, although I did not find this in writting.
Now you know "the rest of the story"

Levino Tittaferrante

1997 C4 Cab
ROW M030 suspension
OEM Aerokit 1b kit, complete
ROW 64/21 (in transit)
Motor Sound w/snorkel
Motor Sound mufflers (in transit)
Nokia Digital Sound option
Fabspeed Maxflows (FOR SALE)

H20NOO

I think I'd connect the switch to my radio. Radio OFF - mufflers OPEN! Radio ON (almost never) - mufflers CLOSED. Yeah, that would do it.

chris walrod

I would connect the muffler solenoid to the ignition switch....If the car is running=mufflers open

graham_mitchell

Man standing behind car with SPL meter = mufflers closed!

All other times, mufflers open

C2-Sancho

Does this sound like a group buy??

tom_993

I'd like to "hear" from someone who has these.

Could you connect the valve to a switch on the dash? Turn it off in your neighborhood and on for the track?

Tom
'95 993

C2-Sancho

I was checking the web site of RUF and they don´t seem to have these for the "Turbo Look Models" (C2S & C4S) <img border="0" title="" alt="[Frown]" src="frown.gif" />

Harold

</font><blockquote><font size="1" face="Verdana,Tahoma,Helvetica">quote:</font><hr /><font size="2" face="Verdana,Tahoma,Helvetica">Originally posted by C2-Sancho:
<strong>I was checking the web site of RUF and they don´t seem to have these for the "Turbo Look Models" (C2S & C4S) </strong></font><hr /></blockquote><font size="2" face="Verdana,Tahoma,Helvetica">You should not face a problem whether it be the S model or the standard carrera as far as I know.

max911

exhaust tip would have to be a different offset from narrow body tip