PRL Rear Motor Mount Testing vs OEM

[Azkyrie6]

Can you try with the A/C on and at a standstill? My aspec with the sofest 27WON offering had the whole car shaking.

ran a quick test in the garage, not sure if it made a difference. Apologize for kids in the background curious what I was doing



vibration essentially the same as the November 26th test; no increased vibration either as you can hear me crank up thr A/C full blast.

+0.1G I’m noise frequency, but that’s likely from added sound of A/C. Definitely no experience with the whole car shaking at at all with PRL RMM

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[Godofelru]

I appreciate your testing on this. Usually what happens with these is that people are like yeah they're no major NVH, but these are the same people who have 4" exhausts with no cats or resonators with stripped interiors and they're like yeah no this is normal for a street car and there's no drone on the highway either. Then a person buys it and is like wtf this is awful my car rattles, shakes, and if I turn the AC on my significant other won't even sit in the car she's so embarrassed.

I had a solid chromoly steel rear mount on my sentra (330whp/310wtq) and the NVH was pretty noticeable, but once I raised the warm idle ~150 rpms it felt identical to stock. I'm pretty sure we don't have the ability to raise the idle in Hondata so it's nice to know that there's an option out there that might be reasonable for someone who DD's the car.

Speaking personally while I appreciate the test, I'd rather see if someone local with the mod would let me take their car for a spin to really seal the deal because I know firsthand how much a improved RMM improves low speed WOT traction.

 

[Two Step Performance]

We are big fans of this mount as well. Compared to many I have a low tolerance of NVH for a street car. We use this mount in our FL5 which makes about 500whp depending on which turbo we have in the car. Over the years I've probably used 6-8 different rear motor mounts from different manufacturers in our community and this one has been my favorite because it gets the job done with very limited NVH.

 

[Azkyrie6]

I appreciate your testing on this. Usually what happens with these is that people are like yeah they're no major NVH, but these are the same people who have 4" exhausts with no cats or resonators with stripped interiors and they're like yeah no this is normal for a street car and there's no drone on the highway either. Then a person buys it and is like wtf this is awful my car rattles, shakes, and if I turn the AC on my significant other won't even sit in the car she's so embarrassed.

I had a solid chromoly steel rear mount on my sentra (330whp/310wtq) and the NVH was pretty noticeable, but once I raised the warm idle ~150 rpms it felt identical to stock. I'm pretty sure we don't have the ability to raise the idle in Hondata so it's nice to know that there's an option out there that might be reasonable for someone who DD's the car.

Speaking personally while I appreciate the test, I'd rather see if someone local with the mod would let me take their car for a spin to really seal the deal because I know firsthand how much a improved RMM improves low speed WOT traction.

Can confirm my car has no bolt-ons or exhausts it's stock. I did test with VSA off(pedal dance) where I would normally get wheel hop 1st through 3rd gears. This mount completely eliminated it. Quick shifting between gears jerkiness has been vastly improved as well.

But as you say, no review is better than trying it out yourself. My wife and children definitely has not noticed any difference

We are big fans of this mount as well. Compared to many I have a low tolerance of NVH for a street car. We use this mount in our FL5 which makes about 500whp depending on which turbo we have in the car. Over the years I've probably used 6-8 different rear motor mounts from different manufacturers in our community and this one has been my favorite because it gets the job done with very limited NVH.

The TSP FL5 build has been fun to follow the past few months. Thank you for amazing customer support, best prices and delivering products quickly! (I'm not affiliated with TSP in any way)

PRL mounts definitely get the job done without taking away from street daily driving experience and comfort.

 

[bigmikevegas]

Updating on this mount, installed it today and I can wholeheartedly say that this is the best $180 I've spent on the car so far, why didn't it come like this from the factory?!

 

[Azkyrie6]

Updating on this mount, installed it today and I can wholeheartedly say that this is the best $180 I've spent on the car so far, why didn't it come like this from the factory?!

Glad you’re enjoying it. Go for some drives and the car should feel very solid with barely any increases in NVH. Also, you’ll notice that after a few weeks the RMM will break in and have even less vibrations

 

[thosport]

Installed this last weekend. Gotta say the first crank had me a bit worried- definitely some additional low frequency resonance when brand new. It’s calmed down a lot over the past week and now the only time I notice any NVH difference is when the car is cold- but I actually like the rumble weirdly enough.

 

[Azkyrie6]

Installed this last weekend. Gotta say the first crank had me a bit worried- definitely some additional low frequency resonance when brand new. It’s calmed down a lot over the past week and now the only time I notice any NVH difference is when the car is cold- but I actually like the rumble weirdly enough.

Check back in again in another month. But I know what you mean, there is a subtle rumble that feels oddly satisfying lol

 

[qweedqwag]

Hey everyone hope you're all well out there.

I took the PRL motor mount off today and put the stock unit back on, the NVH was super annoying , loud and I didn't notice a difference in shifting and it never "broke in" like others have mentioned. . Use your money for more productive mods.

 

[ABPDE5]

Hey everyone hope you're all well out there.

I took the PRL motor mount off today and put the stock unit back on, the NVH was super annoying , loud and I didn't notice a difference in shifting and it never "broke in" like others have mentioned. . Use your money for more productive mods.

It shouldn't impact shifting at all. The transmission is bolted to the engine and moves with the engine, separate from the car.

It should reduce engine movement under sudden hard acceleration and the jerkiness that comes with it, which occurs just after shifting (when pushing the car). As a result, feedback provided often praises an improved shifting experience, but it should be noted that that experience is actually the result of improved traction immediately post-shift, not a result of a change in the feel of shifting itself.

 

[qweedqwag]

It shouldn't impact shifting at all. The transmission is bolted to the engine and moves with the engine, separate from the car.

It should reduce engine movement under sudden hard acceleration and the jerkiness that comes with it, which occurs just after shifting (when pushing the car). As a result, feedback provided often praises an improved shifting experience, but it should be noted that that experience is actually the result of improved traction immediately post-shift, not a result of a change in the feel of shifting itself.

The unit has damage from vibration, the small end had metal missing from the the outter edges which tell me it was rubbing on something the stock unit doesn't. it shifts great at the track so I have a new paperweight.

 

[boosted_canoe]

The unit has damage from vibration, the small end had metal missing from the the outter edges which tell me it was rubbing on something the stock unit doesn't. it shifts great at the track so I have a new paperweight.

i haven't experienced any rubbing issues. maybe you scraped it during installation?

 

[tegs]

Ive had the PRL RMM installed for about a week now..
Only downside i see so far is, when i start the car I get hard vibration in break/clutch when it first cranks up., just for a split second....

Anyone else feel this?

 

[StingertimeNC]

Yes, kind of. My car definitely vibrates a bit more at start up and at idle, but I don't even really think about it now. With the tune, I'm glad I got it. Tires definitely hook up better in first and second. I was on the fence about it, but happy now.

 

[tegs]

Yes, kind of. My car definitely vibrates a bit more at start up and at idle, but I don't even really think about it now. With the tune, I'm glad I got it. Tires definitely hook up better in first and second. I was on the fence about it, but glad I got it.

That’s good to hear, my next step is a tune now…

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