Test pipe recommendation

[cW6mT mKviGLi]

Hello and good day fellow enthusiasts, I searched through threads with various test pipe info, but i was unable to find the info I needed.

I have a C7.5 3.0T A6 but I figured i would have more luck finding info in the B8 section. I'm looking into transitioning the car from stock to ultracharger. With that said I've already figured out which water to air intercooler to use along with other supporting mods.

I'm searching for a test pipe solution but I had one reputable shop tell me that they do not recommend JHM test pipes due to cracking and other problems. They were pretty adamant about stating they would not even order them for me because they do not stand behind the product. Is this still an issue even with the revised pipes? If it was as easy as swapping downpipes on an MQB car I wouldn't mind trying out test pipes because it can swap it out fairly easy. However, the installation of test pipes are pretty labor intensive so I'm trying to get it right the first time.

Thank you for your time,

Devin

Sent from my SM-G965U using Audizine mobile app (http://r.tapatalk.com/byo?rid=87676)

[Ayo_wtf]

I ordered JHM test pipes and when I got them in quality in hand they feel insanely well put together the welds are gorgeous. Most test pipes should be fine I would just definitrly stay away from Becker. Ive had a couple people tell me that they are pretty garbage. Honestly your best bet and the best sounding option would probably be to hollow out your stock cats. Less rasp from those.


Sent from my iPhone using Tapatalk

[Morritse]

I ordered JHM test pipes and when I got them in quality in hand they feel insanely well put together the welds are gorgeous. Most test pipes should be fine I would just definitrly stay away from Becker. Ive had a couple people tell me that they are pretty garbage. Honestly your best bet and the best sounding option would probably be to hollow out your stock cats. Less rasp from those.


Sent from my iPhone using Tapatalk

I've had friends with Becker's and JHM fail at the welds. I agree that gutted cats are the best, just make sure you reinforce the welds on the upper flange.

[ModItNow]

Get a Merc Racing heat exchanger for cooling.

JHM's first version were crap, they swapped mine out for their v2 pipes when they stated leaking so they did stand behind their product. So far so good with the v2's. I was looking at Eurocode when that happened, they look nice and price is good too.
https://www.ecodetuning.com/EC0303-0106-eurocode-s4-s5-test-pipes-3-0tfsi-4-2fsi.html


Sent from my SM-G965U using Audizine mobile app (http://r.tapatalk.com/byo?rid=87676)

[BlueSteW8]

The welds on my Becker (OBX) held, but the passenger side lower flange was out of spec causing a leak.
Replaced them with JHM V2's and DP HFC w/X-Pipe - I don't think they have a HFC solution for A6/A7s though.
Other Test Pipe options are Tampa AutoSports (?) and Red Star.

[cW6mT mKviGLi]

Thank you to everyone who took the time to share their experiences. I've been trying to find more information on Tampa autosports test pipes but was unable to find a product specific to the C7.5 chassis.

Sent from my SM-G965U using Audizine mobile app (http://r.tapatalk.com/byo?rid=87676)

[byront8]

I’m RHD and so have had to have some made for me. Going to see if any other RHD guys here are keen on a set.

145015


Sent from my iPhone using Audizine (http://r.tapatalk.com/byo?rid=87676)

[rand0mher0]

+1 for gutted cats.. literally 0 rasp on my car

https://www.youtube.com/watch?v=Y2uDmijgt4M
https://www.youtube.com/watch?v=Lw524W9HRLU
https://www.youtube.com/watch?v=nXbfOh_ohgY

[cW6mT mKviGLi]

Thank you again to all that are taking the time to share their experiences.

I would love to do the gutted cats with the reinforced flanges, however, finding some random cat pipes on ebay for the A6 will be alot tougher than locating for the S4. Maybe I'll put my faith in the JHM pipes since the version 2 notes are specific to reinforcing the pipes for strength.

Sent from my SM-G965U using Audizine mobile app (http://r.tapatalk.com/byo?rid=87676)

[Morritse]

Thank you again to all that are taking the time to share their experiences.

I would love to do the gutted cats with the reinforced flanges, however, finding some random cat pipes on ebay for the A6 will be alot tougher than locating for the S4. Maybe I'll put my faith in the JHM pipes since the version 2 notes are specific to reinforcing the pipes for strength.

Sent from my SM-G965U using Audizine mobile app (http://r.tapatalk.com/byo?rid=87676)

Post on the forum probably won't take long at all.

You sure they're different parts?

[cW6mT mKviGLi]

I assume there is a difference because JHM lists two different part numbers when it comes to B8 vs C7 test pipes.

Sent from my SM-G965U using Audizine mobile app (http://r.tapatalk.com/byo?rid=87676)

[Morritse]

I assume there is a difference because JHM lists two different part numbers when it comes to B8 vs C7 test pipes.

Sent from my SM-G965U using Audizine mobile app (http://r.tapatalk.com/byo?rid=87676)
https://jhmotorsports.com/exhaust-downpipe-x-pipes-with-high-flow-cats-jhm-for-the-b8-s4-s5-3-0t-and-4-2l-fsi.html
Weird. Same for this one...

[4.2 prototype]

The eurocodes will fit thats what I'm using on my A6... the B8 S4 pipes are the same. Eurocodes have an extra bung for wideband etc if you install one in the future.

You'll need some titanium exhaust wrap to wrap all the way to the baby resonators and vibrant j-hooks for the 02 sensors. You'll also most likely need a stage 1 tune to help with the CEL if the vibrants don't work with the stock tune. Some cars are finicky, mine is. Might be PCV issue with me tho.

[ePONYmous]

Waiting for my FB message [emoji6]
I’m RHD and so have had to have some made for me. Going to see if any other RHD guys here are keen on a set.

145015


Sent from my iPhone using Audizine (http://r.tapatalk.com/byo?rid=87676)

[byront8]

Waiting for my FB message [emoji6]

I pick this prototype set up this week!

[cW6mT mKviGLi]

The eurocodes will fit thats what I'm using on my A6... the B8 S4 pipes are the same. Eurocodes have an extra bung for wideband etc if you install one in the future.

You'll need some titanium exhaust wrap to wrap all the way to the baby resonators and vibrant j-hooks for the 02 sensors. You'll also most likely need a stage 1 tune to help with the CEL if the vibrants don't work with the stock tune. Some cars are finicky, mine is. Might be PCV issue with me tho.My plan is to go from stock to ultracharger. I was waiting for IE support on Simos 16 cars but I dont think that I can wait anymore. I'm researching program switching with APR and I believe I'll need to APR app with the dongle tool. I'll most likely have a 93 octane test pipe file, 93 octane non test pipe file and a 100 octane file to run some E40 for when I do the RS7 fuel pump.

Sent from my SM-G965U using Audizine mobile app (http://r.tapatalk.com/byo?rid=87676)

[Bartlett]

Nobody mentioned Redstar? Those seem pretty solid. Should be like $500ish for a set.

[finnicky7]

Nobody mentioned Redstar? Those seem pretty solid. Should be like $500ish for a set.

I have Redstar, and would recommenced them. Only issue is DS O2 bung is too close to firewall. I would have it moved forward 1/2" if I was to install another set. Rasp is definitely there, mine are wrapped so its probably less, but still noticeable.

[JoedreddUK]

I have Redstar, and would recommenced them. Only issue is DS O2 bung is too close to firewall. I would have it moved forward 1/2" if I was to install another set. Rasp is definitely there, mine are wrapped so its probably less, but still noticeable.

Did you mention that to RedStar?? How are they?


Sent from my iPhone using Audizine (http://r.tapatalk.com/byo?rid=87676)

[Niksreaperb8]

Hello and good day fellow enthusiasts, I searched through threads with various test pipe info, but i was unable to find the info I needed.

I have a C7.5 3.0T A6 but I figured i would have more luck finding info in the B8 section. I'm looking into transitioning the car from stock to ultracharger. With that said I've already figured out which water to air intercooler to use along with other supporting mods.

I'm searching for a test pipe solution but I had one reputable shop tell me that they do not recommend JHM test pipes due to cracking and other problems. They were pretty adamant about stating they would not even order them for me because they do not stand behind the product. Is this still an issue even with the revised pipes? If it was as easy as swapping downpipes on an MQB car I wouldn't mind trying out test pipes because it can swap it out fairly easy. However, the installation of test pipes are pretty labor intensive so I'm trying to get it right the first time.

Thank you for your time,

Devin

Sent from my SM-G965U using Audizine mobile app (http://r.tapatalk.com/byo?rid=87676)

Ecode makes nice test pipes
Won’t touch anything JHM after buying their garbage clutch/flywheel and then meeting more people than I can count on 2 hands with similar failures from their clutches to cats and cracked welds , it’s all fly by night junk

[Morritse]

Ecode makes nice test pipes
Won’t touch anything JHM after buying their garbage clutch/flywheel and then meeting more people than I can count on 2 hands with similar failures from their clutches to cats and cracked welds , it’s all fly by night junk

Becker's crack, JHM crack, just get gutted cats and weld the flanges

[hardfive]

Yeah I looked for weeks and read all the threads. It seems all test pipes will crack.

I still went with test pipes as they are theoretically easier to change then the oem cats which are a nightmare.

Sent from my SM-G973U1 using Audizine mobile app (http://r.tapatalk.com/byo?rid=87676)