BORLA xr_1 ???

[mark_ma]

My next project for my car is the exhaust system.
I have a 2004 s4b6
And I am going to do a custom exhaust system with FI downpipes.
Still debating to go catless or with cats.
FYI, I live in Colorado.
And yes, they do require cats.
As I was talking to someone the other day there is a way around it when comes to emissions day, if I was to go catless.

Doing some youtube searches.
Yeah, Borla's sound pretty mean!
Im looking at all the XR-1's. webstire ( Borla XR1 )
As far as tubing I know it has to be a 2.5"
Now my questions is...

*As for the type I see(Multi-core / Sportsman / Bullet)
Whats the difference with those 3.

*For muffler Shape.
Is there a difference in performance/sound?
Or it doesn't matter, it's up to me what shape I like better?

[mark_ma]

I would call them up
But there phones calls are only mon-fri.
So I did send them an email pretty much saying the same thing.
Once I get response I'll update what they told me.

I just want to here from you guys who do have this set up or close to it.
Thanks,

[aroderick56]

The shape, size, and packing all make a difference.

I went with the 40941 muffler. I have a 2.5" catlass system.

[FastEddie]

The shape, size, and packing all make a difference.

I went with the 40941 muffler. I have a 2.5" catlass system.

I have the same mufflers with the JHM headers. I had COUNTLESS people come up to me over the weekend and say it sounds like pure sex. (which it does lol)

[geebus]

I have the same mufflers with the JHM headers. I had COUNTLESS people come up to me over the weekend and say it sounds like pure sex. (which it does lol)

Lies. Sounds like a Prius

[aroderick56]

I have the same mufflers with the JHM headers. I had COUNTLESS people come up to me over the weekend and say it sounds like pure sex. (which it does lol)

Mine sounded like pure sex... until the timing came prematurely and now im only left in disappointment

[mark_ma]

The shape, size, and packing all make a difference.

I went with the 40941 muffler. I have a 2.5" catlass system.

that looks nice!
by chance do you have a video clip of it?
I just like to hear how it sounds

[aroderick56]

No I was waiting for the mufflers to get burned in a bit and then my timing went south.

Fast Eddie has a small clip somewhere. His sound is what convinced me

[FastEddie]

No I was waiting for the mufflers to get burned in a bit and then my timing went south.

Fast Eddie has a small clip somewhere. His sound is what convinced me

The small clip is on here in a thread i posted last year i believe around November. Search my name and audi sport run and it will probably come up (also i have pics from waterfest 2014 i think there may be a vid there too). The setup in that clip is Catless Milltek DP's with the XR1. I now have JHM headers with the FI exhaust until the axle with the XR1.

I have video from Quattro de mayo and i put the mic on the license plate when i was driving. While it sounds cool, its loud and the mic gets distorted because the sound. Ill see if i cant find a good video clip. Also, ill try to take some video soon but im going away for the week so i wont be around the car.

[pwest15]

The small clip is on here in a thread i posted last year i believe around November. Search my name and audi sport run and it will probably come up (also i have pics from waterfest 2014 i think there may be a vid there too). The setup in that clip is Catless Milltek DP's with the XR1. I now have JHM headers with the FI exhaust until the axle with the XR1.

I have video from Quattro de mayo and i put the mic on the license plate when i was driving. While it sounds cool, its loud and the mic gets distorted because the sound. Ill see if i cant find a good video clip. Also, ill try to take some video soon but im going away for the week so i wont be around the car.

Found it. http://vid58.photobucket.com/albums/...%20driveby.mp4
Pure sex that sound

[mark_ma]

Found it. http://vid58.photobucket.com/albums/...%20driveby.mp4
Pure sex that sound

[mark_ma]

still no word from borla.

So far what i have found for case sizing
bigger case size = less loud, ...deeper tone...???
small case size = loud , not so deep tone...

Is this true?
I ask because I was able to find from one source only

Right now its between these two
40941 Borla XR1 (12" x 4.5" x 7.88")
or
40942 Borla XR1 (16" x 4.5" x 7.88")

[pwest15]

still no word from borla.

So far what i have found for case sizing
bigger case size = less loud, ...deeper tone...???
small case size = loud , not so deep tone...

Is this true?
I ask because I was able to find from one source only

Right now its between these two
40941 Borla XR1 (12" x 4.5" x 7.88")
or
40942 Borla XR1 (16" x 4.5" x 7.88")

I'm debating those same two! Haha, man I hope you get that full exhaust mounted before I leave so I can hear it and die happy

[aroderick56]

You most likely won't get an email response. I called Borla and talked to their tech line for about an hour the one night.

[FastEddie]

You most likely won't get an email response. I called Borla and talked to their tech line for about an hour the one night.

When i spoke to them i called as well.

[mark_ma]

I'm debating those same two! Haha, man I hope you get that full exhaust mounted before I leave so I can hear it and die happy

Yeah me too
So the muffler place will let me install the downpipes
so from my house or your house depends when you leave
I get to ride with just downpipes loud, loud, haha
once I bring the car there he'll do his magic

This is my thought process
Since im going catless on the downpipes
Im thinking of going with 40942
Reason is...
Catless gives more sound then w/cats
40942, the casing size is slightly bigger, so sound isn't as loud, but deeper tone
So in a way they kinda cancel each other out
Catless downpipes makes up for the other

But again
In reality there will be not a big difference in sound...
I guess we'll find out!

[mark_ma]

When i spoke to them i called as well.

Yeah
I've give these guys a call

[david borla]

still no word from borla.

So far what i have found for case sizing
bigger case size = less loud, ...deeper tone...???
small case size = loud , not so deep tone...

Is this true?
I ask because I was able to find from one source only

Right now its between these two
40941 Borla XR1 (12" x 4.5" x 7.88")
or
40942 Borla XR1 (16" x 4.5" x 7.88")

Hi Mark,

Sorry for this.

Please call me on the direct line to my office at 805.246.6067 or send me an email to [email protected]

Thanks

[mark_ma]

Cool
So i did get an email from them.
This is what they said...

"Hello Mark,

Thank you for your interest in our exhaust! David has asked me to help explain the differences between these two mufflers.

The 16” long mufflers will only be slightly louder than the stock rear mufflers already installed but you will notice the tone shift to be slightly deeper with a better low rumble. If you want the system to be noticeably louder at all, you would want to use the 12” mufflers which will still provide a similar rumble at a slightly higher volume.

Will you still have a front resonator on the new exhaust after the cats are removed? If so, I would recommend the shorter 40941 mufflers or you risk not hearing much difference in the sound at all. If you are removing both the cats and the resonator though, then I would recommend you use the longer 40942 muffler.

Thank you, "

I think I know what I am going to do now.
Go with the 40942's

Thanks For you Help David & Chris from Borla!

[pwest15]

WOO!!! Nice! Can't wait to hear it. You should totes PM Jake to get him to send you an ETA for those downpipes

[mark_ma]

Guess what got to my house...?
Finally!!!!!!
I feel so happy





The only downer part is I start work again tomorrow for 15 days.
But after those 15 days I have 6 days off.

[pwest15]

Haha! Yes dude! Can't wait till it's all put together

Sent from my potato

[pwest15]

Also, just wanted to say that after you install the downpipes, you don't necessarily have to drive it straight piped to the shop that's gonna fab up your exhaust. I'll text you a link to some cheap 2.5" to 2" couplers you can stick on to use your stock exhaust

Sent from my potato

[QIKRNU]

The small clip is on here in a thread i posted last year i believe around November. Search my name and audi sport run and it will probably come up (also i have pics from waterfest 2014 i think there may be a vid there too). The setup in that clip is Catless Milltek DP's with the XR1. I now have JHM headers with the FI exhaust until the axle with the XR1.

I have video from Quattro de mayo and i put the mic on the license plate when i was driving. While it sounds cool, its loud and the mic gets distorted because the sound. Ill see if i cant find a good video clip. Also, ill try to take some video soon but im going away for the week so i wont be around the car.

Do you still have the FI mufflers?

[getslideways]

The small clip is on here in a thread i posted last year i believe around November. Search my name and audi sport run and it will probably come up (also i have pics from waterfest 2014 i think there may be a vid there too). The setup in that clip is Catless Milltek DP's with the XR1. I now have JHM headers with the FI exhaust until the axle with the XR1.

I have video from Quattro de mayo and i put the mic on the license plate when i was driving. While it sounds cool, its loud and the mic gets distorted because the sound. Ill see if i cant find a good video clip. Also, ill try to take some video soon but im going away for the week so i wont be around the car.

Do you know which length XR1 mufflers you went with? or what part number they were? I read through your thread but didn't come across which ones you ended up going with:

http://www.audizine.com/forum/showth...at-are-options

Thank you!

[getslideways]

The only downer part is I start work again tomorrow for 15 days.

I think exhaust install is more than enough of a justified reason to call in sick

[FastEddie]

Damn. Im not 100%. I can do some digging though. Ill get back to you later today hopefully.

[FastEddie]

Well that was quicker than thought. Love amazon so easy to search previous purchases.

http://www.amazon.com/gp/product/B00...ilpage_o03_s00

[getslideways]

Well that was quicker than thought. Love amazon so easy to search previous purchases.

http://www.amazon.com/gp/product/B00...ilpage_o03_s00

haha I love it when things work out easier than expected

Thank you very much for taking the time to look that up. It is very much appreciated

[mark_ma]

Also, just wanted to say that after you install the downpipes, you don't necessarily have to drive it straight piped to the shop that's gonna fab up your exhaust. I'll text you a link to some cheap 2.5" to 2" couplers you can stick on to use your stock exhaust

Sent from my potato

Cool
My plane was once i get the downpipes in
Go to the muffler placeplace first thing
So i'll only be driving it from the distance from the muffler shop to my house, or who ever's place i do it at
Just to be safe, send me that link, thanks!

[mark_ma]

I think exhaust install is more than enough of a justified reason to call in sick

Well, im a lil over halfway through my on days
I think I can make the other half,haha
But trust me, the waiting is killing me!

As for me I went a head and got...

*FI catless Downpipes ...( FI Downpipes)
*Borla XR1 _ 40942 ... ( Borla XR1 )
*Custom piping at a muffler shop... hopefully sometime next week!!!

[FastEddie]

haha I love it when things work out easier than expected

Thank you very much for taking the time to look that up. It is very much appreciated

not a problem!

[mark_ma]

Yesterday was cra cra
installed my first down pipes ever
what a long day! haha
And today just got my exhaust system DONE!
oh its a purring (Italian voice)

Her first day at a shop
It feels just like yesterday I held her
They grow up so fast...sniff sniff
[IMG][/IMG]

I'll be posting a video with before and after here in the next couple of days

[vdubjetta02]

I live in Colorado and have owned (2) B6 S4's

I ran catless downpipes with 2.5" FI Cat back..... every 2 years I had to swap my downpipes back to stock.... PIA but the only way I could pass emissions.

High flow cats typically go bad after 2 years and will fail inspection the next go round if they pass the first time..... I have owned 9 modified cars in 11 years in the state of Colorado and I have fought this issue more than most people will in their lifetime

[mark_ma]

I ran catless downpipes with 2.5" FI Cat back..... every 2 years I had to swap my downpipes back to stock.... PIA but the only way I could pass emissions.

Yeah, Ill be doing the same thing too, haha

[mark_ma]

As promised
Here is the video of before and after
At first the video was like a full length movie
I cut out as much as I can so that it doesn't drag on forever
enjoy

[getslideways]

/\ very nice!!!

Thank you for taking the time to put that video together and to share it!

So no resonators in the system right?

[mark_ma]

Thanks!

That is correct, no resonators