OP your definitely on the right track with your mods. In the last six months I have done all those and what a difference they make. I went with trexturk dp’s and also have a Stasis exhaust. With the stasis exhaust, the “resonance chamber crossover” IMO helps but its not a true X. If you look closely at the welds the “crossover” section is probably 4 inches long but only an inch or so wide where the pipes meet. Here’s a couple vids of the catless pipes with the stasis.
While I won’t claim to know much about cars. I have been shown first hand how bad it is to not have a cross over in a high revving v8. Audi eliminates the cross over as a way to cut power. Knowing and have actually been to Stasis I can tell you that stasis made that exhaust with the sole intention of making money not performance. They later changed the exhaust design to include a X due to the poor performance without one. I would highly suggest either selling the exhaust or installing a X.
Doing so will be a great investment for not only power but proper flow between banks on the motor.
Just add an x pipe and your set bra.
ahh thats slightly frustrating… I wish I knew that when I ordered it.
Is having no cross over a huge deal?? I’ll change it up this spring if it is…
It’s a pretty big deal if you Want to make the most power out of your setup. Just put it into you “to do list” of mods for the car. When you are ready we’ll guide you to an x pipe that is good and won’t break the bank
treb… ITs a very big deal VERY big… On turbo cars or other FI cars its not as needed. Its the X in the pipe that ballences out each side of the motor and helps keep the motor ballenced and healthy. Building cars for over 15years I can tell you that its only in your best interestes to get a X in there. I personally don’t like that Stasis has been taken over by corprate guys they are making cuts on parts and shipping everything to china
there was a 20 page post on how Stasis exhaust and other parts were garbage and included in this was how several people showed dyno loss for installing the Stasis catback on the 4.2 S4 and other experts saying such a exhaust was going to do damage
When you click the link you will see that Audizine has deleted this information as staisis is getting sued and several people wre putting out how bad staisis products are
Your not skrewed but you really do need to rither sell the exaust and get a proper one or put in a X
Thank you for the info, will the addition of an x-pipe to the system drastically alter the sound?
I may just hold off until tax return time and buy a new system…
I agree the X is going to be the best bet. Its really a need when it comes to the overall performance and balance.
The X will change the sound. IT will take down more drone and leave the exhaust tone more tight.
It will be a much more refined sound. You can just replace the set of resonators closest to your dp’s with an x pipe and it should keep the sound the same as now.
Sorry to beat a dead horse here guys!
I am picking up an xpipe but am a little nervous hacking up my stasis catback! Mainly worried there will be an overall negative effect…
Anyone put an xpipe in their stasis exhaust? Or an equivalent?
I wouldn’t be too nervous about hacking up the statis catback. To be honest, you’re going to be way better off with the xpipe, like everybody else has said.
That was one of the main things I made sure my catback had when I was deciding on what to go with, thats why I went with Fast Intentions 
It will only make it better, and you’ll be doing yourself a favor in making stasis’ product better.
If you do it, you need to go to a good welding place to make sure they do good clean welds. Shoddy welds aren’t going to help much of anything.
buy Fast Intentions used for $800-1000 when one comes up for sale
sell stasis used for $700-800 once you get the FI
Don’t waste your time with anything else.
This. You’ll get more cash for your Stasis, unmolested.
Agreed as well. Leave it alone or swap out the whole system. You won’t be able to sell it once you start cutting it up.
Sakimo, I noticed on audiforum.ca you had a FI for sale a while ago… I assume that’s long gone?
^yea pretty sure it’s sold. He sold it prior to trading the car in for the RS4.
^I think it went with the car.
yessir
I sold my catback and downpipes for about $1450 or something. Downpipes were simple no cat, 2.5 stainless. Probably worth $400-500 used…so the catback commanded about $900-1000.