[urq] Urq stainless exhaust idea

craigcook at rogers.com craigcook at rogers.com
Mon Mar 16 19:25:47 PDT 2009

Hi Steve,

Sorry for the late reply.

No negative comments at all. All positive comments in my opinion.

Steve, this exhaust is mainly aimed at the performance guys.  I intend to make the system as bearable
as possible in terms of noise, and drone.

It's kind of a different market as opposed to the URS4 guys.

However, 3" over the axle is very hard to do. You wouldn't believe how close the tolerances are.
I'm even going to be including new exhaust hangers in the kit to compensate for sagging hangers.
The  clearance between the subframe and floor is that tight.

I easily have 40  or more  hours into this system, just for over the axle  fitment alone.

I can  now see why not so many company's offer this diameter of exhaust for the small chassis Audi's.

I have a similar system on my 4000q, it's a MC1, chipped running a stock urq downpipe and K26 turbo. I'm happy with the sound, however it is  a  little more aggressive than a stock system in terms of sound. For me the sound is brilliant,  obviously I'm going to be more biased that way, seeing as I'm trying to sell these systems.

Now factor a catalytic converter and a K24 turbo, for the stock 20v guys and I.m pretty confident
that the noise would be allot quieter.

Factor in a Garrett GT 30 turbo and 20 psi and now you have my attention.
This is the kind of customer I'm targeting.

My good friend Mike Hopton had agreed to let me use his 10v urq and 20v urq for testing purposes.
I may even post system decibel readings, while comparing them to a stock car.

I hope this helps.



From: Steve Mills <s.b.mills at gmail.com>
To: craigcook at rogers.com
Sent: Wednesday, March 11, 2009 8:12:01 PM
Subject: Re: [urq] Urq stainless exhaust idea


Thanks for doing this- I've got a stock down pipe, a very poorly fitting Stebro center section, and an Ansa rear section I don't expect to last out the year so I'm very interested. That said, I'm concerned about noise levels and drone with no center box. The C4 S-car 20VT systems by Stromung went through at least 3 major iterations before the sound and drone level got to an acceptable level.

Have you run the system on your car? Not trying to be negative, but I had both Stromung Gen I and II systems and neither was very livable.

Thanks again-


On Tue, Mar 10, 2009 at 6:48 PM, <craigcook at rogers.com> wrote:

Hi Ben ,

I'm planning on making a run of 3" stainless 304 grade systems
There will be no center box on this system. 3" over the axle is very
tricky to get right due to clearance problems.
Final system will hopefully be in 3 pieces depending on if people want a high flow cat option  or not.
All pipes will be CNC mandrel bent,and tig welded. Also 3" stainless steel band clamps will be used.

Final pricing hasn't been worked out yet but I'm hoping to be under $1000 for the complete system,
this will include all hardware and hangers.

This system is a direct replacement for 10vt systems, with a little modifying the 20t guys should have
no problem fitting this to there cars. Future systems for the 20vt guys using the 3b downpipe will also be
considered depending on demand.

I've attatched a few pics of my current prototype.


Craig Cook
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