I have mashed the Google button many times the last few days. Confusion over nomenclature and constant results for the S5 V8 keep confusing me. There are resonators on the stock down pipes, a center almost square muffler/resonator and the two rear mufflers just under the rear bumper where the Sport exhaust valves are located. Leaving the forward stock resonators intact and removing and replacing the center muffler/ resonator with a Xpipe is what folks are doing, correct? There are numerous X pipes out there, Supersprints is pricey. Suggestions please. Thank you.
If you can find a picture or graphic of your stock exhaust I can help explain it better to you.
But the front you have two cats that look like one really long cat. I don’t think I know of the resonator in the upper pipe section your talking about. A picture might help there.
As for a X pipe your going to get the best results from the RS5 if you contact contacts local exhaust shop. They are hard to find if you don’t know anyone good. If your need to have a drop in X pipe your results might only be a few and the price will be very large.
Number 1 and 2 represent your down pipes. The back box on the down pipes is the resonator section.
The number 5 is your center section muffler. The reason it will be so hard to get an X pipe for your car is that your center muffler section has a side entry exit.
Whats the possibility of the S5 catback fitting. You have hard of jhm they have a full system for the S5 that just might work for the RS5.
Thank you. Number 5 on your chart is where the X pipe goes, that’s what I thought. Understand about the side entry on the center muffler/resonator. Thanks much.
http://images.tapatalk-cdn.com/15/05/17/56fabf9fb8c327cf38a1ac2832e13e0a.jpg
S5 exhaust looks the same.
http://images.tapatalk-cdn.com/15/05/17/c80021a127f8a7a946b2727c4c211f85.jpg
Thanks again. Is your system from a v8 S5? If so is the plumbing all the same diameter?
[quote=“Skywagon,post:7,topic:7374”]
Happy to help. That’s actually out of a 2015 S5 which is the V6. It’s not actually mine, just found pictures on eBay of it. I put the link under the picture to the eBay ad.
FWIW, scoured the internet, no such thing as a bolt in RS5 X pipe. It appears any such device to replace the center, square muffler/resonator would have to be created by a shop. Don’t know if I really want to cut and weld my exhaust system?? Thanks for the help. Any one have a used Capristo for sale? ;D
Skywagon, reach out to Danny at Fast intentions http://www.fastintentions.com/
They may have an idea how similar the V8 S5 exhaust is to the RS5, if not he may know someone on the west coast interested in bringing in their RS5 so he could potentially make both of you an exhaust. This is the company that makes exhausts for JHM, I had one on my B7 S4 and plan to put the RS4 exhaust on very soon. They are top quality and really friendly guys to speak to over the phone. I had him do some custom vband extention on my B7S4 exhaust.
If the timeline or price in unreasonable why not stop in at National Speed in Wilmington and see what they quote you? They do some pretty great fab work and I’ve heard good things about them, just don’t let them try to talk yo into tuning the ECU.
The exhausts look very similar when it comes to the routing and the B7 S4 and RS4 exhausts only needed minor modification to fit.
I wouldn’t guarantee anything, but I’d bet the setup is very close.
http://www.fastintentions.com/images/products/imgProduct127-image202.jpg
http://store.034motorsport.com/images/B8_Audi_RS5_Capristo_Exhaust_Sytem_2_Large.jpg
Understand all and thanks much. Will check with both shops. I googled ECU Tunes for RS5. There are several out there, only a couple claim any real HP gains. Most are like APRs 6-8 HP gain. I learned something when I was wrestling with APR and my S4. I estimate these numbers, 58% of throttle angle on their tune causes about 90% throttle opening. Man showed me the specs in his install box. Think it’s cheaper to just push throttle a little farther!
^ Exactly. Remapping the throttle position sensor is NOT a tune.
A lot of people do this mod on the 3.0TFSI S4/S5. Cut out the middle resonator 5 and weld in the magnaflow xpipe there. As Justin said, the resonator is slightly side entrance, so you’ll need to add a little bit of tubing to make it work (get SS obviously and have it TIG welded).
But honestly, this is done on the S4’s because they are pretty much dead quiet from the factory, and people tend to balk at a 2k exhaust that returns little to no performance. On the 4.2, you probably will get more benefit from going with a full catback exhaust.
I did this on my B8 S4 and it was cool for a while, but there was a good amount of drone and it sounded very raspy up top. I also didn’t have it tig welded, so it started to rust. Ended up getting a nuespeed exhaust (which seems to be related to the FI exhaust that used to be sold).
Not trying to be a dick, but we’ve seen how much you’ve been willing to spend on mods before…so…makes a lot more sense to just buy an exhaust IMO. People doing this xpipe mod are usually trying to save a few bucks (at least on the 3.0TFSI).
Yeah, butchering a RS5 exhaust is not smart. Regardless, there are no Capristos in the states but Todd at Vivid racing in Arizona cut me 5% off the price, $440 including shipping to East coast. He says he can get one delivered in 7-9 days. Others are saying 4-6 weeks. Thanks
Also, keep this in mind: if/when you ever want to sell your RS5, you’ll probably want to put a stock exhaust back on. If you cut it up, then you can’t do that…
With the S4/S5 3.0TFSI, you will have a MUCH easier time finding someone local who is willing to swap for your aftermarket/hack job exhaust. But in your case, you will have a really hard time finding another rs5 owner to swap with.
So I would definitely keep the stock RS5 exhaust in your basement if you do indeed upgrade. Just something to think about…
Vivid racing? They are still in business? (scammers)
the only problem is the b8 has a supercharger compensating for a lot of shitty exhaust mods
the RS5 does not, and needs the engine to have the greatest possible opportunity for efficiency on the intake and exhaust side
doing what a B8 S4 does to try and salvage some sound out of their car can cripple performance on a naturally aspirated car that revs to 8500 rpm and relies on VE to perform
and with that, I am going to step out, and stay out of this thread. Someone gave the OP great advice to access the best exhaust manufacturer for naturally aspirated Audis, JHM, who use Fast Intentions for production. Hands down, the best performance results for the B67 S4 , the B7 RS4, and the other 4.2 Audis in NA form have come from JHM designed exhausts. All of the others have been virtually useless for performance, as they replicated stock diamters, and put louder mufflers.
But as I said, the OP has been told what works, and that’s all you can do in a forum. Now it’s up to him. There are lots of companies who will be happy to sell you a shit performing exhaust that makes your car louder.
What’s VE?
Volumetric Efficiency?