It seems like the ruf exhaust is the favorite of most people on the board. Does anyone know where you can get a vid/sound clip of the ruf system?

 

Jack has video/sound clips of his Ruf exhaust posted somewhere. I'm sure he will respond shortly.

Craig (L.A.)

 

[quote]Originally posted by maxwell:
<strong>It seems like the ruf exhaust is the favorite of most people on the board. Does anyone know where you can get a vid/sound clip of the ruf system?</strong><hr></blockquote>

Check this site for Ruf exhaust sounds:

<a href="http://www.realitydesign.tv/jack/videos.htm" target="_blank">http://www.realitydesign.tv/jack/videos.htm</a>

Scroll down to 996 Turbo videos, right click and hit "save target as" for faster downloads.

 

Is the RUF exhaust an OEM exhaust that has had cats changed and some guts altered on the original cans and welded back together where the new tips go ? It sure looks like it from owners pics ! I was thinking about getting it , but someone needs reassure me that I'm not paying $5500 for a cut open OEM exhaust .

 

"Is the RUF exhaust an OEM exhaust that has had cats changed and some guts altered on the original cans and welded back together where the new tips go ?"

YUP, that's pretty much it. That's all RUF did --hack up some new stock Porsche mufflers, remove internal cats, replace main cats with 100 cell cats, rebaffle the inside of the cans, alter the O2 sensor locations and add dual tips. You probably should pass on getting this exhaust. <img src="graemlins/xyxwave.gif" border="0" alt="[bigbye]" />

 

[quote]Originally posted by Jack:
<strong>That's all RUF did --hack up some new stock Porsche mufflers, remove internal cats, replace main cats with 100 cell cats, rebaffle the inside of the cans, alter the O2 sensor locations and add dual tips. You probably should pass on getting this exhaust. <img src="graemlins/xyxwave.gif" border="0" alt="[bigbye]" /> </strong><hr></blockquote>

I want my money back!!!

Craig (L.A.)

 

Actually makes sense to use stock cans - assuming the cut areas are welded back carefully . The stock cans' long term structural intergrity ( but heavier weight ) and shaping is probably why the RUF doesn't have any resonance . I've had performance exhausts that sounded great at WOT , but were migraine -inducing with closed windows at highway cruising or gentle throttle tip in .

 

It's hard to believe the Rufs sound and performance. cjv posted his performance gains after dynoing the Rufs and compared to all the other exahust on the market it was almost twice the HP/torque.

After listening to Amirs and Jacks ruf exhaust I was sold. The sound is intoxicating when listening from outside the cabin. Words cannot explain the sound, I think it has shades of the F1 scream.

Jack's vid clip gives you an idea of what it sounds like, but in real life it's much more awesome.

I Switched from the Cargraphics export, which also sounds awsome but has much more resonance which I didn't mind, but it didn't perform as well as the Rufs.

To date there have been a few attemps to replicate the Rufs but no one seems to be able to get sound and the performance like the Rufs. They must be spinkled with magic Ruf dust before they leave the factory.

 

Its not magic, and come on, exhausts don't make HP they allow it. I remain sceptical of the posted gains (70HP if I remember)no offence, but unless they have a JATO system in them..I doubt if a pipe from the turbo, straight out would give that much gain. The sound is from the tuning of the tail pipe, thats the note you're hearing. The lack of resonance, as in the OEM exhaust is from a noise cancelling effect. Both turbos, moving gas at slightly different frequencies into the open chamber of the exhausts diminishes the sound. Having torn open and done many permutations on stock exhausts, I've found that with even removing ALL of the resonators and the small amounts of baffling present, you still are left with NO resonance. Yes, no diverters, resonance chambers, fiberglass packing, just straight from cat, to the mixing chamber and out...its a very forgiving design. BTW, tested back-pressure with all of the internals removed is 0.04 lbs (essentially nothing). Stock is 1.5-1.8 lbs @3000RPM. I understand you like your Ruf exhausts, but please, MAGIC?
Flame on Ruf-ites

 

I also want to say how happy and suprised I have been with my Ruf exhaust. I bought mine from CJV and experienced a large increase in performance. There is no resonance and on the highway it sounds like a stock exhaust. The wonderful sound is at full throttle. It is best of both worlds, very quiet during normal driving and excellent sound at full throttle.

My friend has another manufactures exhaust on his 996 Turbo. It also sounds pretty good at full throttle. The problem is at highway speeds he cannot make a cell phone call.

Good Luck

 

[quote]Originally posted by cjv:
<strong>Jack, you were not suppose to say those kind of things. <img src="graemlins/nono.gif" border="0" alt="[nono]" /> Statements like that are a little out of character, coming from you <img src="graemlins/icon501.gif" border="0" alt="[icon501]" /> Here, I thought you liked your Ruf exhaust.

</strong><hr></blockquote>

CJV:

I love the RUF exhaust and think it's the best option for me. I know for a fact it creates (or as some would prefer to say -- allows the engine to create) more power.

It looks like my attempt at sarcasm in response to MKW's original post (where he said he needed some reassurance) failed miserably. <img src="graemlins/crying.gif" border="0" alt="[crying]" />

Lest there be any misunderstanding, IMHO, the RUF exhaust is the best. <img src="graemlins/beerchug.gif" border="0" alt="[cheers]" />

 

CJV, what my post says is that most backpressure is in the cats, not post cat cans . Having said that , there is a certain amount of backpressure most street driven motors need to operate most efficiently, as you say.
I totally agree that the area under the curve is much more important than peak HP - imagine a mod that gives 100 extra HP , but only at 6600-6700 rpm , but the rest of the curve is actually below stock. The car will be slower. That may be why some post of great RWHP max hp gains after modding their TTs, then wonder why a GT2 with " 100 fewer " advertised HP is so much quicker, discounting it's 250 lb weight advantage also.

 

I guess, I'M not disputing totally the gains, but there was some sarcasm in the allows more HP. Well thats true of any exhaust. They pure and simple DO NOT MAKE HP. They allow better flow, in normally aspirated cars provide optimal back-pressure etc. This isn't me saying this, this is from automotive engineers and designers of performance and race vehicles. Better flow on a turbo Will allow the better utilization of the modifications upstream not to mention better turbo performance in general..It has to be part of a complete sytem, that where the tuning part comes in.
BTW back pressure is measured at the test ports, in front of the cats for the most accurate reading. This is where we took our readings.
I would really like to see a stock TT dyno vs. Ruf only without mods.

For those that think the price of a Ruf exhaust is extreme. It certainly is not. Ruf must buy an exhaust body, most likely not from Boysen, but from Porsche as its their design and patent, add that to the costs of heat shields, cats, and a technician that has to open align cats and tips, and weld the stainless back together. Not counting the R&D. Its an expensive proposition, that most-likely takes the better part of a day to tear down and assemble.
Another aside. In mid 2002, Porsche did a design change on the internals of the stock exhaust. one less resonator, with a different diverter. It would seem that the system should flow differently (slightly more efficient), and give a different exhaust note.
In the stock exhaust, the 2 banks of cats are monsters, this is most-certainly the area of greatest restriction.

 

cjv, could you post a pic and/or audio clip of your europipe exhaust?