Haimus Racing Carbon Plenum

[Redd]

Anyone seen this? Curious to know the science behind the vertical velocity stacks vs the stock ones which face the air inlet / airflow.

The provide a 10 yr structural warranty which is good to have.

[dfwashere]

looks interesting for sure. in for deets if anyone has any!

[Adrian g.]

Originally Posted by Redd

Anyone seen this? Curious to know the science behind the vertical velocity stacks vs the stock ones which face the air inlet / airflow.

The provide a 10 yr structural warranty which is good to have.

I would question the efficiency of those trumpets.

[derbo]

I don't know much about their new e9x lineup. This morning in a conversation with a few other enthusiasts, this company came up and their former name was Streamline. I don't know the whole story but have heard that they were banned from M3Forum for some reason. There are a few CSL airbox CF trumpet failures when I did a quick google on Streamline M3 so YMMV.

Their claim for 12WHP is interesting with a stock intake/filter.

[SYT_Shadow]

Originally Posted by derbo

I don't know much about their new e9x lineup. This morning in a conversation with a few other enthusiasts, this company came up and their former name was Streamline. I don't know the whole story but have heard that they were banned from M3Forum for some reason. There are a few CSL airbox CF trumpet failures when I did a quick google on Streamline M3 so YMMV.

Their claim for 12WHP is interesting with a stock intake/filter.

The other day a Evolve airbox trumpet failed as well

[derbo]

Originally Posted by SYT_Shadow

The other day a Evolve airbox trumpet failed as well

I wonder what caused the failure.

[Johnr3524]

This seems strange to me. From Haimus - In the package you receive a fully bolt-on replacement for the standard OE plastic intake plenum (PN: 11617838010). Package DOES NOT include an intake elbow replacement! We currently do not produce a carbon intake elbow, it is a planned item for the fall of 2021.

What's the expectation for an intake elbow? Is the expectation that we use the oem elbow? If so, why bring it up? What am I missing?

[Redd]

Originally Posted by derbo

I don't know much about their new e9x lineup. This morning in a conversation with a few other enthusiasts, this company came up and their former name was Streamline. I don't know the whole story but have heard that they were banned from M3Forum for some reason. There are a few CSL airbox CF trumpet failures when I did a quick google on Streamline M3 so YMMV.

Their claim for 12WHP is interesting with a stock intake/filter.

You're right. After I posted that up, I did some research on Haimus and found the same that you did. They used to be called Streamline and was big with the E46M community. Then the below happened...

I probably would not get their product.

[Redd]

Originally Posted by derbo

I wonder what caused the failure.

Looks like design to me. From what I can see, the trumpet bottom flange is what attaches to the throttlebody boot, but the trumpet is thin and glued to the plenum base. Heat + vibration probably broke it. The Karbonius uses a metal fitting to attach to the tb boot.

[accarter]

Originally Posted by Redd

You're right. After I posted that up, I did some research on Haimus and found the same that you did. They used to be called Streamline and was big with the E46M community. Then the below happened...

I probably would not get their product.

Wow! That is egregious construction. The trumpets look to be 3D printed out of PLA lol.

That being said, I believe in redemption. This s65 plenum looks solid, trumpets made out of metal and fixed via a nut to the bottom of the plenum. Interested in hearing what this one sounds like.

[ANLV]

Hello guys,

I am the owner of Haimus Racing. I just saw this post, so I just want to clear things up a little about who we are, what we do, the mistakes we have made etc.. as a lot of stuff is being said from 3rd parties.

Streamline / Haimus Racing Failures?

In early 2020 we had three airbox failures - the one above, one other one in the USA and one more in Japan of airboxes ordered in late 2019. Yes, back then we actually used 3D Printed ABS plastic for the bungs and the trumpets. Yes, it was a stupid decision and I made it - I admit. We did a lot of heat testing and vibration testing of the parts, but when both were introduced at ~5000 rpm the resonance combined with heat made SOME of the plastic parts break axially, meaning the layers of plastic kind of unattached from each other rather then cracking or breaking.. It depended on the fractures and voids left in the item during the 3d printing process. We didn't experience that during our testing as it was a random occurrence. Around that time we learned of 3 massive failures from three of the biggest AIRBOX manufacturers, similar to ours. Two were made public, one was kept on the hush hush and I don't believe more then 10 people know about it. This is important, because it was a failure on our part, but also an opportunity to learn from ours and the mistakes of others and push the market forward. At that time I sent a MEMO to ALL owners about the issue, and a decision was made to fully redesign the intake and send replacement to all 30 people who had one of the intakes with plastic parts in their possession, no matter what the chances of a failure were!




So before sending the replacements we did the following updates:

1. Pulse matched trumpets for 6500-7500 RPM power
2. Made the trumpets from 3 layers of structural carbon fiber.
3. Made the bungs from Aluminum and with a custom threaded lock-nut for extra security

In fact because of what happened during that time when it comes to our mistakes and those of the other producers - we introduced the custom thread-locked bungs and are still the only company on the market that not only uses aviation grade adhesive to bond the attachments to the airboxes, but also locks them with a nut and thread locker making the possibility of a failure virtually impossible.



Here is the S54 Haimus CSL intake vs CSL Intake with OEM trumpets Dyno with the power gains from the trumpets mentioned:

The MAP is made for the OEM Trumpet CSL intake and still our airbox gained 10-15 nm between 3-7k rpm. With a remap the car gained another 6 whp with our intake on.





The person with the video posted here received one of the replacements you can see in the video bellow. He has over 10 track-days so far and multiple road miles and has sent us only positive feedback. In fact we have sent over 100 of these now, a lot for racing and motorsport purposes and have never had a single complaint.

At this point - a new update was introduced this year, so even the trumpets on the S54 airbox are placed into metal cups which are then thread locked to the carbon - like the S65 airbox.

At this point in time every single intake has been replaced!

Please don't hold our past mistakes against us now - we have made them, we learned from them and we have made sure our new intakes are bulletproof.


S65 INTAKE

I would question the efficiency of those trumpets.

We spent over 1 year of development only on the trumpet shape and size. We started with OEM-like trumpets and slowly started to experiment with different designs. Will spare you the full info, some of it is proprietary, but this design definitely adds better air-flow characteristics.

1. The bell curve diameter is continuously becoming smaller, increasing the air velocity right before the head.
2. The trumpets diameter at the throttle body is perfectly matched to the ITB making a seamless transition from the ITB to the head
3. The Trumpets are themselves thread locked into the construction for maximum security
4. The trumpets because they are thread locked can be 100% centered towards the ITB meaning again - better flow transition. OEM trumpets have ~1.5mm difference from trumpet to trumpet when it comes to their center points.

In fact we are still working on the MAP and we are at over 18 WHP atm and there is more to come. I can update when we are finished with that.

I have divided the DYNO's in LOW / MID / HIGH. This relates to the RPM.

Info about the S65 Intake dyno runs:

Car is the last 2013 model year. Car was measured same day, 64 minutes apart. 3 runs were done with stock plenum and our development aftermarket elbow and 4 runs were done with HAIMUS Plenum and our development elbow. Test was meant to see the differences from just the plenum with no remap.

Car has a full HEADER+Custom exhaust with full decat, which will come into play with the adaptations I will talk on later. On this dyno, stock cars give ~315-318 whp, whereas this car started off with a solid 337.98 WHP.
Ambient temp for both runs was the same at -8 degrees celcius
Humidity was exactly the same at 53.4%

We kept oil and water temps at exactly the same values for both tests and they were monitored for ALL RUNS. We have picked the best runs!

Car came in with a 337.3 whp and did a maximum of 337.98 whp on its 2nd run.
After we changed the airboxes car started building its own adaptations giving:
- Run 1: 320.56 whp
- Run 2: 336.5 whp
- Run 3 - 339.78 whp
- Run 4 - 341.8 whp (or a net difference of ~4whp)




We didn't have time for more runs as it was getting into the 3 hours after working time was over for the dyno, so after some more dyno runs the car could have mapped itself to ~1whp more MAYBE - adaptations were still being made.
‼ **DYNO LOW:**


- We saw ~25-26 nm of gains at ~3000 rpm. This was kept consistent from all dyno runs with our plenum. This is from the sheer bonus amount of air the plenum is capable of shoving into the engine. With some VANOS finessing we have gotten that number even higher. Will update once the map is finished and the car is on the road.



‼ **DYNO MID:**


- As you see there is a drop in torque by a maximum of ~7nm in the midrange. Due to the increase in breathing capacity on the intake and exhaust side the car is at its limits when it comes to adapting fuel and timing. This is what we saw on live data - the mixture is running lean, and there is too much Vanos overlap. Once we touched the VANOS we gained all that back and more . Will update final results, once the map is finished and the car is on the road.



‼ **Dyno HIGH:**

- The maximum torque is ~5 nm lower, but above 7000 RPM our intake has smoother curve building more up to redline, stock plenum starts to die out at 8100 RPM. At 8200 rpm you even see another kickback up with Haimus plenum. We actually saw another 4whp gain when just adding another 300 RPM to the mix, without touching anything else on the MAP.

REMAPPED gains and dyno graphs will be posted when we have finished with the car program. Its a bit tricky as the car is a race car and we are working on two dry weather maps, a wet map, and the car is expected to get cooling upgrades which means we can push the maps further later on. Keep in mind our remaps will be conservative as the car is a track car and maximum reliability is required.




I hope this has explained what we do and how we do it. Thank you for the interest. I am glad you like our product! We have put a lot of effort into it - we are using the intake for racing, as that is what it is designed for! More videos with explanations will come out soon. Thank you for the support

[rockstar93]

Figured I should chime in here as a "devout" Streamline/Haimus customer...

TL;DR: Haimus is the real deal and puts out quality products. They were not without some hiccups in the startup stages but their customer service and motivation to improve themselves and resolve all issues has not only kept them in business but elevated them to where they are now.

Firstly a pre-requisite...I am not in any way involved with Haimus/Streamline, I do not benefit from any success or failure they experience, I am merely a customer. In the beginning they did offer an early adopter/pre-order discount on their S54 CSL airbox, I took part in that and received the discount. I did experience a failure of that box, and as noted above Haimus replaced the box with their new design. Outside of that, this is an unbiased opinion of Haimus. I have been pretty open about my dealings with them throughout the years on the forums.

1) Regarding the M3Forum drama:
Much of the happenings on the forum have been lost with the death of the forum itself but the negative reputation Streamline received from there was due mainly to the nature of group buys hosted on the forums. A third party was on the forums "selling" Streamline when they were in the market of E46 carbon body parts (I believe the big ones were the CSL diffuser and front bumper). The group buys made BIG promises of OEM level fitment at aftermarket pricing, and long story short fitment was not perfect. I was not a customer of those pieces so can't comment in detail, however by then their reputation was solidified and they were driven off the forums. The individual who hosted the group buys has since been involved in his own drama and has all but ghosted his customers now, turns out he was a less-than-upfront group buy host.

2) S54 CSL Box:
I was an early adopter of this box for use on my E86 Z4M - correct me if I'm wrong Antony but my box was #4 they made, #2 production (the first 2 being prototypes). I was overall happy with the fit and finish but unfortunately it did suffer failure of the epoxies which almost grenaded my engine (I got seriously lucky, and had documented what happened in this thread complete with pictures). Antony was very sincere and extremely apologetic, and worked with my to correct the issue on both ends (to fix my box and to resolve the issue for future production boxes). He immediately had sent a new epoxy that could withstand the temperatures allowing me to DIY "fix" the pieces.

To this day I still run this box in my car, though I do very little driving this year. He has sent me the new, updated box, however I have not yet had the time to install this one. I can say visually the new one is head and shoulders above the original. Design is obviously improved (the way the trumpets attach using the threaded lock-nut, stiffness of the box, quality of the fittings used), the clear coat has a much better finish, and much less carbon imperfections than the original.

3) S65 Plenum:
Since the beginning I remember Antony talking about developing and producing an S65 plenum - this was a few years ago well before they became so prominent in the community. From the start, because of how happy I was with the change in character of the S54 with the CSL box I was on the list for the carbon S65 plenum. Development took A LONG time, longer than I would have wanted but you can't rush quality.

I received it about a month ago (#007), and installed in a couple weekends back. While they are top notch quality and look the part - the sound left me a bit disappointed, but that's the nature of plenums. They don't make a noticeable difference to the S65 induction noise that the CSL box on the S54 does. I wonder if this could be because I still run my OE intake + filter, and if maybe I ran a Dinan or similar the plenum noise would make a difference, but I have a quiet OEM mod exhaust and don't hear an audible difference.

Performance-wise I also cannot comment, as it was not the intent of my purchase. It's pretty obvious if you want power on the S65, you don't stay N/A - although I wanted to stay N/A and don't care for more power. I'm still fully catted on stock tune and don't plan on changing that anytime soon lol. That said it looks like Haimus has done their homework and provided the dynos to back up their claims.

4) Now that you've made it this far, here's some low-res picture porn.

[Redd]

Thanks to ANLV / Haimus for being so open and forthcoming about your products. I wish more vendors were like you and stodd behind their products 100%. Unfortunately I've gone a different route and paid for a custom-made Carboproject plenum.

rockstar93, thanks for your honesty also. Sound = vibrations and I suspect that your lack of additional intake noise from the full CF Haimus plenum is due to the metal velocity stacks. Metal just doesn't vibrate as much as plastic or CF. Cos even on my old Carboproject CF plenum with the stock plastic base/trumpets, there was a noticeable increase in induction noise with the CF plenum cover.

[rockstar93]

Originally Posted by Redd

rockstar93, thanks for your honesty also. Sound = vibrations and I suspect that your lack of additional intake noise from the full CF Haimus plenum is due to the metal velocity stacks. Metal just doesn't vibrate as much as plastic or CF. Cos even on my old Carboproject CF plenum with the stock plastic base/trumpets, there was a noticeable increase in induction noise with the CF plenum cover.

I'm not sure I agree with that hypothesis - because if it were the case I would notice a decrease in volume and/or a change in tone, but that wasn't what I experienced. It literally sounded the same lol. If you think about an acoustic guitar, nylon vs. steel strings may change the tone but have a more minor affect on volume (if anything steel is louder).

Further, it's pretty common on the S54 CSL box to have options of OE (plastic) trumpets or carbon fibre trumpets (Streamline and Karbonius both offered both options) and it was pretty much agreed upon that it had no effect to sound.

I do believe, if anything, it would be because the first 'bottleneck' to the sound is the filter/intake which I kept stock. Opening that up, the plenum changes may be more apparent.

Also, while I haven't heard it yet personally, a few in my area have the CarboProject and all who have heard them say there is no change to noise. I actually held out hope that the plastic OE side was holding that back and the Haimus, with it's re-engineered trumpets, larger volume, and full CF construction would be loudest.

I definitely don't regret this mod, it's awesome - but sound isn't the top reason to get it in my mind (not like the CSL box on the S54, which is one of the most godly noise ever).

[GRUESOM3]

So what's the price of this?

[Redd]

Originally Posted by GRUESOM3

So what's the price of this?

1490 Euros.

https://haimusracing.com/products/e9...-carbon-plenum

[MouseMike]

Quality looks top notch! That's interesting on the sound side. My Carboproject is a noticeable difference with the stock filter, and even more raw sounding with the dinan elbow and filter. My question is it noticeable gains for price and lack of sound compared to the other plenums on the market?

[Andy1gg]

I just ordered one last night I should be receiving mine in about 4 to 5 weeks very curious to see if this was a smart investment. I will definitely give an update once I received mine and hopefully Spencer Burke will also give us some info once he gets his.

[omgzirra_exe]

im probably gonna order one at a later date. my cars stupid loud anyways so i wont hear much. if you're in CA or dont drive your car much in the rain.. doing the BMS Cowl Delete helps a lot with getting more inductions noise into the car.

just doing an intake was a huge gain in sound for me.

[Redd]

Originally Posted by Andy1gg

I just ordered one last night I should be receiving mine in about 4 to 5 weeks very curious to see if this was a smart investment. I will definitely give an update once I received mine and hopefully Spencer Burke will also give us some info once he gets his.

Looking forward to reviews!

[Redd]

Detailed design explanation:

I wish everyone did a video like this.

[icanturn]

Dang. Not gonna lie I was very excited for this plenum and its price point especially with the group buy. But after hearing that it doesn't really add any more sound, I am very disappointed. I feel like that's the whole point of the airbox. At this point, it just seems like engine jewelry. The slight power gains are negligible imo.

I am on the list for the group buy, but I may end up going with the evolve plenum at the end of the day for the sound. Bummer.