JHM B7 RS4 Downpipe and Cat-Back Group Buy on Audizine

so what Im getting from this is there are no actual comparable times of a sameday car with all the same mods except for the downpipes. Also there arnt any proven 1/4 mile times of the same car with and without Downpipes?

So these downpipes don’t have any proven gains and are just a big waste of money from what I gather.

Show us some data where they added nothing vs stock downpipes and you might be on to something.

You’re right though there isn’t much data for just these downpipes stripped out. Only two cars hit the strip with them on so far (the two fastest pump gas na rs4s, they both ran 12.2). When they did there were no other similarly molded rs4s there on stock or other downpipes though.

Of course in the case of the Eurocode headers you sell for the b8, we have loads of comparable including two same day comparisons between header and non header tuned cars…which showed they do very little vs other downpipe/cat options. That’s good for the b8 community as they’ll be spared from wasting their money if they’re listening to the smarter members.

P. S. Think you’ll run 12.2 on pump gas? I’m betting no.

I guess not!

But when have down pipes ever been a waste of money? GTI, V8 S4, DSM etc etc. You’d be hard pressed to find a platform where you wouldn’t do down pipes as well as the exhaust.

WTF is wrong with you? Why do you turn every thread about a Eurocode Header hate thread? Either way I don’t know how you call a 30WHP increase a waste of money, more power to you, I hope your not like this in real life, would make life really tough. BTW I don’t sell headers or car parts, but I think I told you that before.

Probably to get under your skin.

Also, I would venture to guess that Mr. Saki will tell you he doesn’t care about how much whp are claimed to be gained by whatever heads or other item. Only real-word performance testing (ie 1/4 mile) makes a difference to him and many others. Dyno numbers are not really all that useful without a demonstrated correlation to increased performance, and are easily biased or manipulated (which I am sure you know already.) This is why it would be considered a waste of money, and I think was actually part of the argument you were making against the JHM headers.

Still, all things considered, JHM seems to have things going in the right direction, and I wouldn’t think it’s a huge stretch to believe that there are performance improvements to be had from their exhaust pieces since they have been pretty successful in just about every other area. Hopefully the supporting data will be forthcoming as people take delivery of the products.

+1 to JHM for offering to match the group buy price to others who bought before it was offered. Nice to see.

Ya saki likes to post bullshit to get under people’s skins.
Either way this thread isn’t about Saki, it’s about JHM’s exhaust.

Over $1000 for 2 pieces of piping that don’t do jack shit for these cars and don’t have any real world gains or any proven gains for that matter, only the truly daft and uneducated customers would buy them. Also $1750 for a cutback that really doesn’t do jack shit for these cars??? People are insane, and it’s straight criminal the way JHM rips people off on these exhaust systems.

Paper give it up man. You were attempting to do what people did with the headers discussion, and flip it here in the jhm downpipes discussion. Comments like the one I quoted are so patently fucking obvious.

We are not little kids here…

Then you follow it up copying primetimes criminal quote.

Are you pissed off that I knew what you were going to do before you got a chance to do it?

Why don’t you and your puppet master fuck off back to Audizine. Go on.

Although the approach may have some other shit behind it, you really can’t deny the ultimate question: where is the data that actually shows these exhaust components are performance adders? It could be dyno, or more preferably by most on here, real world at the strip. But your normal level of scrutiny around any new product is “prove it!”

Ironically, this product hasn’t proved it (unless I missed it in all the BS) yet you aren’t screaming bloody murder this time.

Providing actual data seems like the least you could expect when being asked to drop a grand or more. And I’m talking about before/after data on the same car with reasonably similar conditions.

You must’ve missed saki saying that he ran the 12.75 in better conditions than 2000s4’s tune+dp+exhaust 12.2:

If that isn’t good enough for you then all of the APR data must be garbage too. Sure they did a before and after tune with their in house RS5, but I struggle to believe they can install a whole exhaust and supercharger system for the RS4 at the track lol.

So fine. JHM doesn’t have the data you want. What product launch does satisfy your requirements?

Didn’t your friend dyno his car and show exhaust gains? Or was it with tune her dynod 360 whp. Dan dynod 360-370 whp. I am not sure what a tune only rs4 would dyno… Maybe 330-340 if the stock cars dyno 320? The biggest tune only gains we’ve seen on rs4 from Apr, epl, Bren, GIAC, we’re around 10-15 peak whp.

Jhm showed timeslips ages ago. Customers followed. (12.2 for two of them in fair da and on pump gas)

The results are solid. Not sure why anyone would scream bloody murder?

Jhm has made no claims about the power these parts add. Keep that in mind. Bloody murder is screamed when people boast of power gains and then the cars don’t seem to produce results that would corroborate those claims.

Jhm makes parts, shows acceleration results, and then leaves it up to you to decide if you want them. Sounds like you want a dyno or something? That’s not going to happen from the company. They recognize that the dyno can be manipulated so why bother legitimizing it? Force companies to show real world acceleration results and let the customers decide.

P. S. Since you have stated you will stay with stock downpipes and catback I can’t see why you care about these parts?

Let me take it further… If you and I are both tuned, have no other mods and you and I are going to race for $5000 (well et a pro driver to make it even) and all you could do is add a catback and downpipes to your car, what would you choose? (Knowing that I am going to house jhm which is sitting in my basement in a big box…). Honestly… What would you do?

This, sure it’s only one car but still, if George indeed only had the tune, dp and catback, then that pretty much clearly shows an improvement of some kind.

Paper, you’re trying to play devil’s advocate here (I’m being diplomatic) but you’re not taking into account George’s 1/4 mile results. Just the fact that he ran a 1/4 mile is more than what you’ve done no?

he is not… He is trying to carry over the b8 headers thread in here. It has been shown time and time again that the b8headers don’t add much vs the cheap 034 cats or test pipes, but paper worked at eurocode so he wants to stick up for them in the face of the data. So an attempt to discredit jhm is his last resort. Pretty pathetic.

HAHAH so when I come on here and post legitimate questions about a bullshit rip off product that you are trying to sell to people,now I have a puppet master and need to fuck off and go to Audizine? I own an Audi which means I know everything about every Audi platform and product out there even though its not made for my car (Just using some golden Saki logic here) You can promote and sell your JHM products all you want Saki but I hear nothing but complaints from people in real life about their exhausts and their tunes. Ive never posted anything bad about them before because frankly I didnt think I needed to post about a platform that I dont own but Saki has shown me the light and Im going to make it my mission to show people on here and especially Audizine the true nature of these bullshit products. I mean seriously $1000 for 2 pipes that dont give you any type of gain??? Seriously?

what a rip-off . 1000 $ for downpipes ? and thats bare bones with a discount . I gotta get into this business. Im still working for chips .

Huh? I’m confused. I only see people being happy about the JHM tune and other products (aside from a couple individuals who’s sole intent is to diss JHM by spamming lies).

And 2 pipes that don’t give you any type of gain? Are you having difficulty reading or comprehending George’s 1/4 gains?

You’re not making any sense whatsoever and you’re making yourself look pretty silly.

one car with multiple mods ran a 12 something quarter mile? Did he run a stock quarter mile time the same day and then a quarter mile time with just the 2 plumbers pipes? If not that skewed result doesnt mean jack, these pipes dont have any proven gains and are a straight rip off as someone else posted.

I guess you also think the Fast Intentions DPs at $1500 that a shitload of S4 owners have bought are also a complete rip-off?

Strange that they sell so well.

Can you be more specific? Multiple mods = full exhaust + tune from what I understand (if this is wrong, someone please pipe in). Saying “multiple mods” isn’t very accurate. And for the sake of accuracy, he ran a 12.2, not a 12something.

As for running the same day with different setups, that’s quite uncommon seeing as most dragstrips don’t have lifts on the ready to swap exhausts.
That same day, the fastest recorded stock RS4 (from another day) ran a 13.1 (with the owner claiming he could have run a 12.9 with more practice).

So the JHM exhaust + tune ran a 12.2. The fastest stock RS4 we know of ran a 13.1 (admittedly, could have run a 12.9).

Simple math shows the 3 JHM components added 0.7 seconds to the 1/4 mile compared to one of the fastest (if not the fastest) stock RS4.

I’ll let intelligent people reading this thread make their own conclusions.

But if you don’t want all 3 (cat back, dp’s and tune) how can you know what piece of that “trifecta” accounted for how much gain? As usual, my question was interpreted as being negative. I won’t argue that the “trifecta” has shown gains. But what does each component yield? To me, this seems reasonable. Sure, if money is not an issue, and max NA performance is what you seek, then a full JHM exhaust + tune seems like a good option. Just seems like JHM would have provided, since they have an in-house car and the means to swap parts quickly, some sort of comparison. Whether it is a dyno or a 1/4m time or a 3k-8k time.

It’s exactly the same as a regular S4. The tune utilizes the full exhaust to its full potential. Secondly, this is a 2.75" system, you want to buy a 2.75" DP and a 2.5" CB or vice versa? (or leave half of the exhaust stock) That doesn’t make sense.

These add-ons are meant to work together. The trifecta output is higher than if you were to measure each individual part on its own. Asking what each individual part adds doesn’t really make much sense.

Same with the S4.