PRL RMM or Wunderladen RMM

[T41WN.1]

Hey, looking to get a RMM for my FL5 soon. PRL's RMM is the easiest for me to get but have had mixed reviews talking about how the stiffness of the RMM went away after a while and did not perform as well as it did at the start. On the other hand, I have only seen positive reviews for Wunderladen but is harder for me to get since I need to get it shipped internationally.

Could someone give me their honest opinions on if these mounts are worth it and their experience with either RMM?

Thanks

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[AaYaku_FL5]

I also had this same dilemma and I decided on the Wunderladden one, even with international shipping it was cheaper than the PRL I could get locally. Install was super easy and overall it's easy to live with. NVH increase is there but under normal driving it's not noticeable, more so at idle with the ac on. Driving wise, feels a lot more solid getting on and off throttle in the lower gears, less wheel hop and a sensation that all your inputs are being directed into the tyres. Definitely recommend the upgrade and based on other people's experiences the Wunderladden would be preferable to the PRL.

 

[Cueyo]

I think a lotta people over or under rate how bad nvh really is - as in tolerance for it is highly subjective. Ideally you'd want just enough hardness in the material to give you traction and better shifts, nothing more or less. If you have more hardness in the bushing than you need, nvh can pose a problem.

I have yet to replace the rmm on my type R, but PRL and wunderladen are my choices as well. Wunderladen claims they change the orientation of the bushing material to help reduce nvh (they say "staggered stiffness" on the site now, not sure if they changed the description) as well as extra material . For this reason alone I would go with them. I also want to note that you're guaranteed to see bushing material degradation no matter what, which isn't a bad thing as long as you keep the benefits over stock. Wunderladen doesn't explicitly mention what material they use either, but I'd bet polyurethane or epdm like prl.

On my previous vehicle, a CVT sport civic, I ran a 70a rmm and it was kinda teeth chattering. I didn't think it was bad, but in hindsight driving the car felt like a racecar, just without the racecar benefits lol. The wunderladen street bushing is 75a, but this is gonna be on a manual car, so you won't really feel the nvh in the same way.

 

[Robo7]

I’ve had both of these. PRL is good but had more NVH than I cared for. Wunderladen street performs as well as the PRL with less NVH. It’s the perfect RMM in my opinion.

 

[Blindeye_03]

^^weird. I had the opposite experience. PRL is softer than Wunderladen also.

I had the PRL RMM and replaced it after 20k miles of use. The Wunderladden RMM was installed at that time and has slightly more NVH but I prefer it over the PRL.

 

[CTRAWR]

Installed Wunderladen a week ago and picked up my friend. He didn't notice that I had replaced my RMM until I told him. There is very little NVH even with the AC on full blast. I'm really happy with this RMM.

 

[Robo7]

^^weird. I had the opposite experience. PRL is softer than Wunderladen also.

I had the PRL RMM and replaced it after 20k miles of use. The Wunderladden RMM was installed at that time and has slightly more NVH but I prefer it over the PRL.

Interesting. The general consensus on this forum from all my research is that Wunderladen and Cobb both have similar performance to PRL with less NVH. All 3 of these are solid options though.

This guide may be helpful.

 

[lando]

I went with the Cobb RMM and you get very minimal NVH at certain RPM's. I was honestly surprised at how well it manages it. From what everyone was saying about all RMM's, I was super nervous. I thought the car would vibrate like crazy. It's nothing like that, so I think you'll be fine with whatever mount you decide to go with. Plus now putting the power down is so much better, and the car feels more connected to the road. I don't think you can go wrong with any of the mounts.

 

[Nikw91]

Had PRL RMM for 20k miles and just switched to Wunderladen RMM. The PRL is softer and less nvh. Wunderladen is noticeably stiffer and only slightly more NVH with ac on at a stop light.

 

[Unity Performance]

I had less NVH and more control running Wunderladen's Street RMM over PRL's. PRL feels solid on the 1.5T cars, but I suspect the extra weight and engine harmonics of the 2.0T make Wunderladen's Street mount the better fit on this platform. I ran PRL for 2 months, Wunderladen for almost 7, and the past 3 months I've been on COBB.

Wunderladen's RMM controls NVH pretty well, but I'll admit COBB does it even better, slight trade-off in control, but not much of one.

My take has stayed consistent: if you're already running Wunderladen or COBB, it's not worth switching unless you're genuinely curious and already in there, or in the rare case Wunderladen's Street RMM is just a touch too minimal on NVH for you, or you're coming from COBB and want ever so slightly more control.

 

[MooMoo]

Funny that so many people have the complete experience with the 2 exact same products

 

[Cueyo]

Id also like to add that if nvh really is a problem for anyone getting an rmm, getting subframe rigid collars installed at the same time might help. I had them done on my sport hatch CVT and on that it made a massive difference. I can imagine on a manual vehicle it would be less, but still noticeable.

 

[Unity Performance]

Funny that so many people have the complete experience with the 2 exact same products

We all started off with the PRL RMM, and around last summer a few early adopters, myself included on the FK8 at the time, tested out Wunderladen's RMM and started recommending it. That created a domino effect over time.

Id also like to add that if nvh really is a problem for anyone getting an rmm, getting subframe rigid collars installed at the same time might help. I had them done on my sport hatch CVT and on that it made a massive difference. I can imagine on a manual vehicle it would be less, but still noticeable.

Yes, you're 100% correct. I added a number of NVH-adding parts first (RMM, PMM, subframe brace, exhaust), then added the PRL rigid collars on top. You really have to experience the before and after in your own car to appreciate the difference, the NVH you'd gotten used to suddenly mellows out, and the whole car feels better put together. I've got the TMM, turbo, DP and FP, and a few other parts coming up next, followed by the Mugen Performance Damper, so I'm tackling this in two stages.

 

[seureri]

I had less NVH and more control running Wunderladen's Street RMM over PRL's. PRL feels solid on the 1.5T cars, but I suspect the extra weight and engine harmonics of the 2.0T make Wunderladen's Street mount the better fit on this platform. I ran PRL for 2 months, Wunderladen for almost 7, and the past 3 months I've been on COBB.

Wunderladen's RMM controls NVH pretty well, but I'll admit COBB does it even better, slight trade-off in control, but not much of one.

My take has stayed consistent: if you're already running Wunderladen or COBB, it's not worth switching unless you're genuinely curious and already in there, or in the rare case Wunderladen's Street RMM is just a touch too minimal on NVH for you, or you're coming from COBB and want ever so slightly more control.

If you had to pick one, I assume it would be COBB?

 

[alSpeed2k]

I just drove my friend's FL5 with the PRL RMM installed this past weekend. I have the Wunderladen RMM myself. Personally, I think both add a little NVH when the car is idling with the AC on and both are imperceptible when the car is moving. I've only driven both on the street, but they both seem to remove the hopping when you're accelerating hard.

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