Muffler delete happening soon, need to decide between 3.5" vs 4" exahust tips

[spennyb7]

Hey all,
I've done a bunch of research, but haven't been able to get information specifically on exhaust tips only. I've seen full catback exhaust setups etc etc, but I don't have that kind of money, or will I ever be able to justify that spend on the Audi (saving for a house, saving in general, trying to keep it on a budget). So, to save money on install, I have a mechanic friend that can cut/delete the rear mufflers, and weld new tips on.

My debate is between 3.5" vs 4" exhaust tips. Looking for opinions on what size to use? Calling all B7 A4 Audi owners that have deleted mufflers or simply done a cosmetic exhaust-tip update. There are a ton of brands out there, but I've narrowed it down to: Single-wall, angle cut (20 degree), stainless steel...just can't decide on the size. 4" looks custom/meatier/flashy... 3.5" resembles closer to stock size, not as flashy.

EDIT: ** I am not looking for power gains with this exhaust job, just looking to remove the rear mufflers, weld in SS piping, and then weld on the tips to gain some sound and better looks. **

Thanks for your help! Picture of the stock pea-shooters currently on the Audi:

[billyhoyle]

So you're completely deleting the mufflers and welding big tips on there? Why not keep the mufflers and just put new tips on? There will be zero performance gain from the muffler delete...not sure what it would sound like, but I'm guessing not great.

[oVeRdOsE]

+1 , 4 cyl turbo muffler delete, must be awful.

Imho, only boxer 4cyl engine get a ok sound with muffler delete.
And 13000 rpm rev engines

Power gain : cat and downpipe.


back to topic :
3'' ?

[spennyb7]

Thanks for the opinions! I failed to mention, and will update the OP, I am not seeking power gains. Just looking to open up the exhaust a little as far as sound. Here is a sound clip of a simple rear muffler delete, sounds nice to me and can be had for fairly low costs:

https://www.youtube.com/watch?v=q7Xlpae8H1A

The sound in that video is really a lot of my inspiration for this small project.

[FraggyA4]

I bet you have a big diesel truck or buddies with big diesel trucks with 5" stacks coming out of the bed.

[DanKing]

3.5 inch tips ....4 inch are too big dude.

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[konarider94]

did someone say big exhaust tips? I have you beat



But seriously, get a nice downpipe with no cat. It will sound better and perform better than just a muffler delete.

[mpv314]

Agreed with what everyone else has said, but if you're set on this route. I have 4" tips on my Magnaflow 16601 system

Stock:


Magnaflow:

[billyhoyle]

did someone say big exhaust tips? I have you beat



But seriously, get a nice downpipe with no cat. It will sound better and perform better than just a muffler delete.

This is true (or a high flow cat if you don't want a test pipe). Techtonics tuning makes a reasonably priced downpipe and there are lots of cheap test pipes out there.

[vce1232000]

No rear mufflers and test pipeed sounds like a recipe for extreme droning on the highway

[spennyb7]

3.5" it is. These comments helped make my mind up.

And yeah, I'm pretty dead set on just deleting the mufflers and going with new SS exhaust tips. That's what my brother did with his B6 USP and it really opened up the exhaust note. I will never have $600+ for a full exhaust upgrade, or even $200 for catless DP or $150 for a test pipe. This is the most cost effective route for getting some sound out of the car and making it a little more fun to drive.

[vce1232000]

A easy way to get test pipe results is to just gut the catalytic converter. Most of the time you can even ru-use the old gaskets. It would $$$ in your own labor and a few nutz and bolts

[konarider94]

No rear mufflers and test pipeed sounds like a recipe for extreme droning on the highway

To clarify I was saying get a test pipe but leave the mufflers in place. I agree that would be a pretty rough combination.

[spennyb7]

To clarify I was saying get a test pipe but leave the mufflers in place. I agree that would be a pretty rough combination.

Yes it would be

A easy way to get test pipe results is to just gut the catalytic converter. Most of the time you can even ru-use the old gaskets. It would $$$ in your own labor and a few nutz and bolts

Although I've heard of this being done before, I do not want to gut my cat. Thanks for the suggestion!

[vce1232000]

To clarify I was saying get a test pipe but leave the mufflers in place. I agree that would be a pretty rough combination.

I wasnt implying that you made that suggestion. I was saying that it was a cheap alternative to spending $$$$ on a test pipe.

[spennyb7]

Ordered 3.5" stainless steel angle cut tips, should receive them by this weekend. I'll post up pictures and a video clip when they get installed/completed for those that are also curious about doing this.

[billyhoyle]

Please do - I'm curious what it sounds like and I'm sure others are as well.

[spennyb7]

Please do - I'm curious what it sounds like and I'm sure others are as well.

Will do sir looks like i'll be receiving the tips tomorrow!

[VitorB7]

Agreed with what everyone else has said, but if you're set on this route. I have 4" tips on my Magnaflow 16601 system

Stock:


Magnaflow:

What tail light is that? it looks sick

[DanKing]

What tail light is that? it looks sick

The JOM LED tail lights

https://www.ecstuning.com/News/Audi_...006_2007_2008/

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[spennyb7]

Got the exhaust tips in yesterday. Now to coordinate a time with my friend to do the install!








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[spennyb7]

For those interested, I bought these tips off of Amazon: http://www.amazon.com/gp/product/B00...=sr_1_9&sr=8-9

[spennyb7]

Mufflers chopped out, 45 degree pipes and straight pipes to the back installed. The tips look fantastic. There is a video clip at the end of this post, don't mind my friend he was being dumb lol it sounds so deep and alive. there is ZERO highway droning and it gets really throaty around 3500-4000rpms. I love it! Highly recommend if you are looking to do a inexpensive upgrade to your A4.


















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[spennyb7]

I did a 2" to 2.25" adapter to a 2.25" 45 degree bend pipe to a 2.25" straight pipe with a 2.25" to 2.5" adapter into the tips. The tips were 2.5" inlet and 3.5" outlet.

We had to bang on the first 2" piping that went over the stock pipe (where we cut off the mufflers) so that it was closer to weld. Wasn't hard to do.

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[spennyb7]

I understand the video isn't working based on the im's ive received. I'll have to upload it somewhere and repost sometime soon. Sorry for the tapatalk upload fail!


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[nickbischoff]

LOL

[Andrew149]

Let's hear the car under load.

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[07AudiA42.0T]

Hey guys selling my Borla Cat Back Exhaust if anyone is interested... Only been on for about 4 months or so. Message for details!

[billyhoyle]

That doesn't sound half bad!

[o1turbo30v]

I bet you have a big diesel truck or buddies with big diesel trucks with 5" stacks coming out of the bed.

lol

[spennyb7]

LOL

Yeah, idk what I was thinking lol

Let's hear the car under load.

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Yes! I am working on finding time to do some drive-bys to get a video for you guys.

That doesn't sound half bad!

It honestly is great. Nice and subtle when I'm not "gettin on it" and it has a great sound when it's WOT. For how inexpensive of an exhaust-job it was, I am very pleased with the sound.

[h0yitsdom]

Stuck with stock piping size for everything?

Planning on doing something similar with my b7 but going 3" piping route

[spennyb7]

Stuck with stock piping size for everything?

Planning on doing something similar with my b7 but going 3" piping route

We stepped it up from stock piping to the 2.5" inlet on the tips. So it went from stock size ~2" ----> 2.5"

[DanKing]

Really want some launch and drive by videos of this.

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[spennyb7]

Really want some launch and drive by videos of this.

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Me too! I'll get on that as soon as I can.

[nickbischoff]

Yeah, idk what I was thinking lol

Tips look good though

[spennyb7]

Tips look good though

Thanks! I appreciated it. And I agree!

If I can't find the time to do the drive-by videos today or tomorrow, I'll definitely get it done on Saturday. Having a hard time finding the time in the daylight after work to get these videos captured.

[realax]

LOL

LOLOLOL

[DanKing]

Me too! I'll get on that as soon as I can.

....still no videos :-(

[1killera4]

Personally speaking I think a test pipe with the muffs still in place would have been a better way to go.