Why should I spend more on a JHM High flow Cat over 034's popular offering ?

[Ringsby4]

Convince me to spend another ~ $A120 on a JHM high flow cat over an 034.
Factors are : I have included in 034's price their oxygen spacer,JHM claims it isn't needed.
034's price includes the gasket/fitting kit, with JHM's its an extra and has been taken into account.
JHM charges freight,I can buy an 034 shipped free (in USA),also included in the comparison.
I think I can see why one may be better than the other-but is it worth the extra spend -I've bought rims,coilovers and a heap of maintenance gear today from the USA ,now that's fun but it all adds up
Unbiased opinions please,NO Company reps will be listened to,lol !

[Okedokey]

I haven't used both, but my 034 one really opens it up and makes a nice grumble in the lower end. I def noticed better power with the butt-dyno.

[Ringsby4]

I haven't used both, but my 034 one really opens it up and makes a nice grumble in the lower end. I def noticed better power with the butt-dyno.

Yep,I was aware you had that ,I still need convincing but after my big spend day,I could save some bucks with the 034 ! I still want to get down to see your car and listen to the BSR,maybe soon seeing the Easter madness is over...
Do you have a spacer or is the rear lambda straight in ?

[Schweini]

Why do you need to be convinced? Buy whatever you want and can afford

Case closed

[Ringsby4]

Why do you need to be convinced? Buy whatever you want and can afford

Case closed

So you say,but I am a guy who wants the bestest for the leastest ! Lol,Are you familiar with the ins and outs of the thread topic, if so I'd like to hear your meaningful contribution,cheers

[Schweini]

JHMs hfc offers a .5" inlet whereas the 034 is only 3". That's in your cars best interest. Since thats what you're after, get the JHM

If you want the "bestest for leasest", then get the 034

[Ringsby4]

JHMs hfc offers a .5" inlet whereas the 034 is only 3". That's in your cars best interest. Since thats what you're after, get the JHM

If you want the "bestest for leasest", then get the 034

I know what you meant ,3.5" and yes thats what I was figuring,I also like the way that the JHM cat body is welded in as far downstream as possible away from the heat.That's a biggy,the OEM is madly close to the turbo o/let.My exhaust guy,not having seen many Audis commented on this.
Others may have picked up other benefits for one or the other.Longevity for example,but that would take time to prove,I'm guessing the shitiest cat matrix would last 10's of thousands of miles.
I'm not after long life though.
Edit: Geez are you in Ontario,its 0400,go to bed,even Neil Young would'have !

[shahk62]

JHMs is better if you're opening your exhaust with their downpipe and B6/B7 exhaust to give you a full 2.5" exhaust.

If not 034 is probably the way to go


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[Okedokey]

The 034 is 3" throughout

[Schweini]

I know what you meant ,3.5" and yes thats what I was figuring,I also like the way that the JHM cat body is welded in as far downstream as possible away from the heat.That's a biggy,the OEM is madly close to the turbo o/let.My exhaust guy,not having seen many Audis commented on this.
Others may have picked up other benefits for one or the other.Longevity for example,but that would take time to prove,I'm guessing the shitiest cat matrix would last 10's of thousands of miles.
I'm not after long life though.
Edit: Geez are you in Ontario,its 0400,go to bed,even Neil Young would'have !

I work night shifts, lol

At anyrate... i have the 034 and its fine. Either or are from reputable companies and both will get the job done

[Rabbit]

I too have the 034 HFC and enjoy it.

[Ringsby4]

JHMs is better if you're opening your exhaust with their downpipe and B6/B7 exhaust to give you a full 2.5" exhaust.

If not 034 is probably the way to go

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I really like the look of the JHM dp but you could buy the rear end of my car for the price and then you need the S4 dual system to complete,no I'll just use a 2.5"custom pipe to my resonator which from reports I may even remove.

I work night shifts, lol

At anyrate... i have the 034 and its fine. Either or are from reputable companies and both will get the job done

my wife does too,weird world that twilight life ! I think 034's the way to go and Europa has them in stock,I just cant see the $$'s giving me so much more....

[Avant4me]

Take into count your local laws as well.

In VA the JHM's product wouldn't pass in most instances because the O2 is not in the main stream and is built in offset.
I would have to go for 034 in this respect as the base product has all 02 sensors mounted direct.

[ktish]

JHMs hfc offers a .5" inlet whereas the 034 is only 3".

This is an important fact that shouldn't be overlooked. with the turbo car, you want the least restriction as possible. The same is said for the cat placement; the further away from the turbo, the better.

The JHM hfc also has the integrated J-bung so even on a stock tune, you're guaranteed to not have a CEL. For the small price delta, I would say the JHM is worth it.

[Hugh@EuropaParts]

I've had the 034 on for about 6 years... and about 100k miles. The construction is top notch to say the least.

[Rulty]

I think both are great quality products, I run a full JHM exhaust and it opened up, however I'm one to squeeze out every last bit of power from my car as possible and have big turbo plans I'm the future. So with that said that half inch ment the world to me because I wanted the best flow possible. Eventually I'm even going to be testing different set ups to increase my intake g/s to really maximize my setup. Either one will work is my point and you'll feel it in your pants. I consider JHM to be more than worth it, but can also see the benefits of probably having very very close to the same power with going with an 034 set up.

Tldr: go with 034 unless youre planning on going BT.

[rongeur]

I had a fabrication error on my 034 HFC (back when I had one). Luckily, I am kinda local to them and was able to drive over and show them as they didn't believe me until they saw it. The turbo flange was welded backwards. Once they saw it, they grabbed a new one and swapped it for me, no further questions asked. I am the only one that I have heard of having the fabrication error so don't think it is a common thing at all. The sounds was great with the Stasis exhaust, much better over test pipe which starts to get somewhat tinny and drone.

I have a JHM test pipe now and I will say it is very quality made product with exact fabrication and the down pipe of my Stasis exhaust sits better (less low) and scraps way less) than it did with the 034 HFC. I am not sure how to describe it better but the down pipe hung lower and was the lowest point of the underbody with the 034 HFC but with the JMH TP, it sits tucked up and protected better.

If performance and best fitment is your goal and willing to spend the extra money, go JHM
If you want tried and true great sound and save some money, you can't really go wrong with the 034 HFC

[pat_do]

First 034 hfc i received was a fabrication defect where the flange was welded backwards

Received a second one.

I found it loud and way too rapsy.

Went back to stock oem cat converter so happy lol

I might get the k04 from apr so that ill bolt on the stock cat

[Ringsby4]

Take into count your local laws as well.

In VA the JHM's product wouldn't pass in most instances because the O2 is not in the main stream and is built in offset.
I would have to go for 034 in this respect as the base product has all 02 sensors mounted direct.

Its illegal to mess with the emissions parts over here but having said that we don't have annual emissions testing.

This is an important fact that shouldn't be overlooked. with the turbo car, you want the least restriction as possible. The same is said for the cat placement; the further away from the turbo, the better.

The JHM hfc also has the integrated J-bung so even on a stock tune, you're guaranteed to not have a CEL. For the small price delta, I would say the JHM is worth it.

Good point,this is a biggy about the J bung,ppl have had trouble with high flow cats of all varieties even with spacers etc -Has anyone had a MIL or code with the JHM ?

[Rabbit]

I have a JHM test pipe now and I will say it is very quality made product with exact fabrication and the down pipe of my Stasis exhaust sits better (less low) and scraps way less) than it did with the 034 HFC. I am not sure how to describe it better but the down pipe hung lower and was the lowest point of the underbody with the 034 HFC but with the JMH TP, it sits tucked up and protected better.

How low are you?!?

[Okedokey]

Ringsby4, check here, it should be fine http://www.rms.nsw.gov.au/documents/...ifications.pdf

[Jake@JHM]

Thanks for the support guys!

[rongeur]

How low are you?!?

Not very low at all by forum standards. 24.75 FTG all around.

However, I have to go in and out of SF and my office parking lot has some ridiculous speed bumps.

[rongeur]

First 034 hfc i received was a fabrication defect where the flange was welded backwards

Received a second one.

I found it loud and way too rapsy.

Went back to stock oem cat converter so happy lol

I might get the k04 from apr so that ill bolt on the stock cat

There mist have been a run like that then.

[Rabbit]

Not very low at all by forum standards. 24.75 FTG all around.

However, I have to go in and out of SF and my office parking lot has some ridiculous speed bumps.

Oh yeah, speed bumps are the devil.

[wootwoot]

Step it up a notch. Purchase the RAI HFC, it has a 4" inlet so it's the least restrictive HFC you can purchase for our platform.

http://www.raimotorsport.com/R-A-I-M...-b7-a4-hfc.htm

[Schweini]

Step it up a notch. Purchase the RAI HFC, it has a 4" inlet so it's the least restrictive HFC you can purchase for our platform.

http://www.raimotorsport.com/R-A-I-M...-b7-a4-hfc.htm

I think the turbo outlet is only 3.15" though. So really, anything over that is overkill and unnecessary.

[Jake@JHM]

Step it up a notch. Purchase the RAI HFC, it has a 4" inlet so it's the least restrictive HFC you can purchase for our platform.

http://www.raimotorsport.com/R-A-I-M...-b7-a4-hfc.htm

They still use the factory Cat pipe to downpipe gasket, which means that it is still restrictive. We manufacture a special gasket to match the large ID of our HFCs and TPs.

[Okedokey]

Yeah anything over the weakest link in terms of diameter will be pretty pointless.