Exhaust Mod - Resonator replaced w/ X-Pipe (video)

[yossefay]

Too lazy to measure this myself: How large is the inlet size of the exhaust tips? I have the stock mufflers on my setup and want to put on some matte black tips so I need to know. If anyone knows off the top of their head that'd be great...

[OnEaNgRyBuNnY]

For the 4 tips, looks like ~2.2" OD where they leave the muffler.


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[InFaMoUs_81]

Just got mine done 2012 stage 2 Apr, DSG , at Competition Exhaust & Automotive in Bristol P.A all for around 250. Minimal drone relative to what it was before removing only center resonator and put non res x-pipe after baby resonators. Its way quieter inside but sounds really nice outside and not as loud as it was from outside perspective as it was before.

[nate.the.great]

Haha, just had mine done as well at Dan Fast in Bellevue, WA by Seattle (adding keywords for folks in the area). ~$276 out the door for the work and piping, I supplied my own resonated x-pipe. I also had the issue of convincing them that I wasn't trying to cut off a catalytic. I asked them to cut it off, and if it was a catalytic I committed to pay for the re-welding.

I am very impressed, it's not noticeable on the freeway, and is just right when accelerating. I wanted my S4's volume to be a bit louder than a stock M3 and that's exactly what it is. The revs at idle are not a great indicator of the sound. The sound under load between 2k and 3k is quite addictive.

[whiped]

Haha, just had mine done as well at Dan Fast in Bellevue, WA by Seattle (adding keywords for folks in the area). ~$276 out the door for the work and piping, I supplied my own resonated x-pipe. I also had the issue of convincing them that I wasn't trying to cut off a catalytic. I asked them to cut it off, and if it was a catalytic I committed to pay for the re-welding.

I am very impressed, it's not noticeable on the freeway, and is just right when accelerating. I wanted my S4's volume to be a bit louder than a stock M3 and that's exactly what it is. The revs at idle are not a great indicator of the sound. The sound under load between 2k and 3k is quite addictive.

We should compare sometime!

Let me know if you are ever down south.

[omegis83]

I also had the issue of convincing them that I wasn't trying to cut off a catalytic.

I had the same problem but it was quickly resolved when I pointed out where the cats were at.

[HaasMonster]

Haha, just had mine done as well at Dan Fast in Bellevue, WA by Seattle (adding keywords for folks in the area). ~$276 out the door for the work and piping, I supplied my own resonated x-pipe. I also had the issue of convincing them that I wasn't trying to cut off a catalytic. I asked them to cut it off, and if it was a catalytic I committed to pay for the re-welding.

I am very impressed, it's not noticeable on the freeway, and is just right when accelerating. I wanted my S4's volume to be a bit louder than a stock M3 and that's exactly what it is. The revs at idle are not a great indicator of the sound. The sound under load between 2k and 3k is quite addictive.

Thanks for the tip! Been looking for shops around the Redmond/Bellevue area. You saved me the time and hassle of explaining they aren't cat's :)

[nate.the.great]

Thanks for the tip! Been looking for shops around the Redmond/Bellevue area. You saved me the time and hassle of explaining they aren't cat's :)

Haha, they're ready for you now. Another note, the second larger resonator has a hanger attached to it. Based on the photos in this thread, I've seen that some shops recreate that hanger across the straight pipes and some do not. I asked for that hanger to be recreated across the straight pipes. I suggest you do the same since it didn't cost anything extra and replicates the stock setup.

[omegis83]

I'm going backwards.

Initially replaced the front baby resonators with the magnaflow x-pipe and center muffler with straight pipes.

Deep tone was a bit too much between 2000-2500 RPMs. Went back to the shop today and replaced the straight pipes with 12in "glasspacks", and not the red ones. Slightly reduced exhaust note but not as quiet as stock. Somewhere in between the x-pipe mod and stock. Good news is it cut down the deep tone between 2000-2500 by half. It's still there but much more manageable.

I wanted to try j-pipes but couldn't find a shop comfortable with going that route. Not a lot of space either to get the length I wanted.

[silverf0x]

For those who had not see it yet. Here's some clips of my setup:






Baby Resonators removed.
Central Resonator removed.
MagnaFlow 11385 Resonator installed as forward as possible.
Stock Mufflers.

[Hooks S4]

Another one for the magnaflow x pipe club at first I wasn't impressed at all. After a 30 minute drive it definitely got louder and again for the people who worry about drone there is ZERO drone. Has a nice mid tone when cruising around and does remind me a lot of my MKV R with a magnaflow touring catback. Very happy with it


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I have this exact same setup. Sounds great but between 2000 and 2300rpm I get a very annoying, vibrating rumble especially on the down rev. Feels like it vibrates from the downpipes. Thought it was the crank pulley, new JHM lightweight installed, still there. Any thoughts?

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[Dragoncub]

What was your final setup? Also for a update I have 2 videos done now waiting to do another drive-by and I'll will upload the YouTube link. Sorry haven't had any time Coast Guard is very busy.

Did you ever upload the videos?

[OnEaNgRyBuNnY]

Most recent Iteration:

Rear mufflers straight piped, mid res replaced with non-res x-piped, front AWE DPs with resonators that are now v-banded for more flexibility down the road. The x-pipe replaced a magnaflow resonated x-pipe. With the non-res'd x-pipe, she's about the same volume at cruise and idle but snarls and pops a lot more and is certainly more raw under hard accel.


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[Jeffklop]

[QUOTE=Hooks S4;11932878]I have this exact same setup. Sounds great but between 2000 and 2300rpm I get a very annoying, vibrating rumble especially on the down rev. Feels like it vibrates from the downpipes. Thought it was the crank pulley, new JHM lightweight installed, still there. Any thoughts?

Sent from my SM-N930T
Does the exhaust have any contact with the bottom of the car anywhere?


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[omegis83]

I have this exact same setup. Sounds great but between 2000 and 2300rpm I get a very annoying, vibrating rumble especially on the down rev. Feels like it vibrates from the downpipes. Thought it was the crank pulley, new JHM lightweight installed, still there. Any thoughts?

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I'm actually surprised they didn't weld a brace across your straight pipes. It looks like the rubber hanger is still there. Chances are, the vibrating rumble is sound resonance which can be cured by one of these:
http://synapseengineering.com/products/nodrone.html

[Krusty]

Hello Guys,

Wanted to add my opinion, just removed baby resonators and added an x-pipe and there is minimum difference if not none in automatic mode. If you switch to dynamic more and you go up to 3500 rpms you will get a some raspiness; Nothing crazy. I will get new tips and see if that makes any difference, which I think it wont. My exhaust guy said, that if I wanted some sound out of it, I should add 2 1/2 pipe from the center resonator and delete the back rear mufflers. I think I will try that out, chime in if you have done this.

[Victor Newman]

Hello Guys,

Wanted to add my opinion, just removed baby resonators and added an x-pipe and there is minimum difference if not none in automatic mode. If you switch to dynamic more and you go up to 3500 rpms you will get a some raspiness; Nothing crazy. I will get new tips and see if that makes any difference, which I think it wont. My exhaust guy said, that if I wanted some sound out of it, I should add 2 1/2 pipe from the center resonator and delete the back rear mufflers. I think I will try that out, chime in if you have done this.

Did you replace the baby resontors with a non-resonated X, or resonated?

PS, don't ask jim about straight pipes or you'll end up with them, lol

[Krusty]

Did you replace the baby resontors with a non-resonated X, or resonated?

PS, don't ask jim about straight pipes or you'll end up with them, lol

It was non resonated x-pipe.

[whiped]

One of these days I might record a real video.

Here is a shitty cell phone vid

[Vdubz]

It was non resonated x-pipe.

Sounds like you left the center muffler and just removed the baby res's and replaced with a non res 'd xpipe? It seems the general consensus on here is that, by doing that you aren't really getting much of a difference in sound. Most people have had better luck by cutting out the center resonator as well but it's all subjective. It might take a while and not sure of if you did it already but start from the beginning of this thread and read through. A bunch of people have tried different combos of rear muffler and center muffler removal.


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[Krusty]

I dont want to add another thread, so I will ask this here. Does anybody have straight on picture of a b8 with 102 mm tips? Is it possible? I have searched and people say that it wont fit and they just fit the b8.5. Does any body have conclusive proof of this analysis?

[extratime]

I did something similar to this mod on my 2015 S5. Replaced the two baby resonators with a resonated x-pipe, left the mid muffler, replaced the stock mufflers with 4x9 oval Magnaflows.

I wasn't looking for a overwhelming change over stock just a subtle change. I'm very happy with the results. I have no drone, and a cabin almost as quiet as stock. I can hear it nicely under load and during cold starts, but under normal driving conditions it's hard to tell I changed it from stock. My big problem is with the tips. I currently have 4" tips on the car and I can't stand them. I want something nice, but I cannot find anything that's short enough to fit and long enough not to show all the crappy welds from the side. I'm at such a loss on what to do with the tips I'm considering going to a single push on type tip instead. Any suggestions on where to get nice quad tips would be much appreciated.

Also I was considering changing my mid muffler with another resonated x-pipe just to see what would happen. Anyone have any idea what the outcome might be if I did this?

[XxSullyxX123]

Does anyone have any of these x-pipe set ups local to Westchester, NY? Debating on trying one of these set ups out on my stock exhaust. I have the AWE Touring exhaust w/ 90mm black tips now and while I really like it, I am adding up all the money I spend on the car this year and feel kind of bad about it lol. Considering its so expensive and purely just for sound, It has me thinking hmmmm

[S4WSE]

if anyone is looking for the magna flow resonated x pipe PM me i have my brand new one sitting around. Went with AWE Touring instead. run about 105 new ill cut a sweet deal on it :)

[KRp220]

odd question... i currently have a AWE "cat-back" track exhaust, but the tips have seen better days and i've been thinking of trying to make it a LITTTTLE bit quieter... not AWE touring quieter, but just enough to cut some drone. is there any reason i couldn't or shouldn't use a small bottle style resonator at the end/before the tips to accomplish my goal?
something like this: http://vibrantperformance.com/catalo...roducts_id=290

thanks in advance

[Hooks S4]

So AZ... still trying to get rid of this crazy vibration I get on my 13 8.5. Have the resonated MF x pipe in place of the baby res, straight pipe back to stock mufflers like most on this thread. I get a interior shaking vibration between 2100 and 2300 that is driving me nuts. Rattles stuff in the cabin on the down rev heavily. Had a muffler shop weld in additional hangers but that just made it vibe in a different spot now but still vibes hard. Everything looks tight, checked all welds and supports? Could it be the cat or cats? Desperate now???


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[LAAUDI]

Most recent Iteration:

Rear mufflers straight piped, mid res replaced with non-res x-piped, front AWE DPs with resonators that are now v-banded for more flexibility down the road. The x-pipe replaced a magnaflow resonated x-pipe. With the non-res'd x-pipe, she's about the same volume at cruise and idle but snarls and pops a lot more and is certainly more raw under hard accel.


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Are you 6 speed or dsg?

[Hooks S4]

DSG


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[OnEaNgRyBuNnY]

Are you 6 speed or dsg?

^^^^ what he said.


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[LAAUDI]

We need more videos of that setup 👌🏻👌🏻

[NavM]

I'm going backwards.

Initially replaced the front baby resonators with the magnaflow x-pipe and center muffler with straight pipes.

Deep tone was a bit too much between 2000-2500 RPMs. Went back to the shop today and replaced the straight pipes with 12in "glasspacks", and not the red ones. Slightly reduced exhaust note but not as quiet as stock. Somewhere in between the x-pipe mod and stock. Good news is it cut down the deep tone between 2000-2500 by half. It's still there but much more manageable.

I wanted to try j-pipes but couldn't find a shop comfortable with going that route. Not a lot of space either to get the length I wanted.

I am also trying to do something about the deep tone/drone between 2000-2600 RPM and may go this route. Are these the same pipes in the link you provided in you other post? Did you also consider putting the baby resonators in place of the straight pipes to cut down drone?

[omegis83]

I am also trying to do something about the deep tone/drone between 2000-2600 RPM and may go this route. Are these the same pipes in the link you provided in you other post? Did you also consider putting the baby resonators in place of the straight pipes to cut down drone?

I had already tossed the baby resonators. The pipes linked elsewhere may have been the j-pipes, which I've heard helps with drone between 2000-2500 because of sound resonance. I went with the glasspacks because they were cheaper and my exhaust shop already had them. While it doesn't eliminate the vibrations from resonance completely, it did reduce it in half.

[maty360414]

Most recent Iteration:

Rear mufflers straight piped, mid res replaced with non-res x-piped, front AWE DPs with resonators that are now v-banded for more flexibility down the road. The x-pipe replaced a magnaflow resonated x-pipe. With the non-res'd x-pipe, she's about the same volume at cruise and idle but snarls and pops a lot more and is certainly more raw under hard accel.


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would it be too much drone and loud if i straight pipe everything baby resonators, center and mufflers?

[miztahsparklez]

would it be too much drone and loud if i straight pipe everything baby resonators, center and mufflers?

YES my car is crazy loud and has an awful buzzing from 2500-3500.


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[OnEaNgRyBuNnY]

would it be too much drone and loud if i straight pipe everything baby resonators, center and mufflers?

YES my car is crazy loud and has an awful buzzing from 2500-3500.


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It's a subjective question, but I'd say for 99.9% of people, it would be too fierce. With the front resonators only, it's not bad under cruise but it is insanely loud under any type of load outside the car, not so bad inside, but tunnels are intense, in a good way. My dogs respond to me when I'm 3 blocks away, according to my roommate. And there is no way around the fact that it does drone, though the drone isn't any worse than when I had the resonated x-pipe, so it actually sounds like less since everything else is louder. I have yet to try swapping out the res'd muffler for straight pipes as they ran out of the stainless pipe at the shop and I haven't gotten back there yet for them to make up the pieces.

Also, this setup sounds raw and can sound raspy. I think it's awesome but some will find it too unrefined for this kind of car.


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[maty360414]

It's a subjective question, but I'd say for 99.9% of people, it would be too fierce. With the front resonators only, it's not bad under cruise but it is insanely loud under any type of load outside the car, not so bad inside, but tunnels are intense, in a good way. My dogs respond to me when I'm 3 blocks away, according to my roommate. And there is no way around the fact that it does drone, though the drone isn't any worse than when I had the resonated x-pipe, so it actually sounds like less since everything else is louder. I have yet to try swapping out the res'd muffler for straight pipes as they ran out of the stainless pipe at the shop and I haven't gotten back there yet for them to make up the pieces.

Also, this setup sounds raw and can sound raspy. I think it's awesome but some will find it too unrefined for this kind of car.


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Thanks a lot for your comment. I had another question would the sound change if I put the x pipe on the baby Resonators or in the center resonator? Or it will be the same thing

[Hooks S4]

So after some detailed reading and going back and forth to various muffler shops, I can only assume that my vibration problem is drone. If I were to remove the res xpipe which I believe is the culprit and replace it with a non res xpipe and replace the stock mufflers with MF mufflers will it decrease my drone vibration problem?


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[Hooks S4]

So after some detailed reading and going back and forth to various muffler shops, I can only assume that my vibration problem is drone. If I were to remove the res xpipe which I believe is the culprit and replace it with a non res xpipe and replace the stock mufflers with MF mufflers will it decrease my drone vibration problem?


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My goal now is to have a quieter cabin. Initially just wanted a more exotic sound and after many variations of set ups, I wish I just invested in a quality exhaust system...


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[NavM]

I had already tossed the baby resonators. The pipes linked elsewhere may have been the j-pipes, which I've heard helps with drone between 2000-2500 because of sound resonance. I went with the glasspacks because they were cheaper and my exhaust shop already had them. While it doesn't eliminate the vibrations from resonance completely, it did reduce it in half.

Thanks. I'll go back to the shop and see if they can remove the straight pipes and put the baby resonators where the large center resonator used to be and report back.

[na_v]

Just did the same x pipe mod, resonated x pipe replacing two baby resonators. centre res straight pipe. cost me 300 done at a highly reputable shop in Toronto, hot rod scotts.
Quick question, so when I'm driving on the highway cruising anywhere above 100km/h and i lightly push the throttle to accelerate slowly as i would do the exhaust sound is very loud inside until i let go and vibrant like drone really annoying at times only at high speeds . i dont know exactly if its normal or how its supposed to sound lol but based on what I've heard sounds like drone. I've uploaded a video to try and capture the sound best i could please let me know with your thoughts if can fix this.


**vertical video warning**