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Old 01-30-2017, 02:39 AM   #11
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Quote:
Originally Posted by Twenty View Post
I had the OEM Mazdaspeed 3 mount on the sedan with my original engine, our hatch has the OEM E-RMM, and I now have the COBB RMM with my swap.

The E-RMM seemed to be stiffer than the MS3 and the COBB is definitely much firmer than either of them. MS3 or E-RMM will be undetectable from an NVH point of view but their better holding capabilities will definitely be felt when driving and shifting.

The COBB RMM brings in a bit of NVH but it's super easy to live with. I love mine.
I think I've watched one of your videos for your yellow ST/SE swap - thanks for the feedback!
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Old 01-30-2017, 05:35 AM   #12
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Problem is no matter what RMM you get, you can't stop wheel hop.

If you try to launch with all the power the car just can't take it. I either get hop or slip (as in my tires screech real loud).

There is no way to get a "clean" launch without ruining other aspects of the car (NVH, ride, etc...)
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Old 02-19-2017, 11:44 PM   #13
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I went with the e-focus mount. I don't have any vibration issues and it hooks way better then before. So for the money it was a super easy upgrade.
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Old 04-26-2017, 06:06 PM   #14
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Quote:
Originally Posted by Hatchi bakku View Post
I went with the e-focus mount. I don't have any vibration issues and it hooks way better then before. So for the money it was a super easy upgrade.
Quote:
Originally Posted by MK3 ST3 View Post
Problem is no matter what RMM you get, you can't stop wheel hop.

If you try to launch with all the power the car just can't take it. I either get hop or slip (as in my tires screech real loud).

There is no way to get a "clean" launch without ruining other aspects of the car (NVH, ride, etc...)
Quote:
Originally Posted by Twenty View Post
I had the OEM Mazdaspeed 3 mount on the sedan with my original engine, our hatch has the OEM E-RMM, and I now have the COBB RMM with my swap.

The E-RMM seemed to be stiffer than the MS3 and the COBB is definitely much firmer than either of them. MS3 or E-RMM will be undetectable from an NVH point of view but their better holding capabilities will definitely be felt when driving and shifting.

The COBB RMM brings in a bit of NVH but it's super easy to live with. I love mine.
I eventually got the Cobb RMM - also have a stratified tune, idle has been bumped to 1000 rpms but I gotta say (with less than 20 miles on new RMM) that the vibrations are ridiculous from 800-950 rpms and again at 1200 rpms.

I'll let it sit in the car for 1000 miles before I make an assessment and I'll deal with the race car vibrations for now.
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Old 05-02-2017, 04:00 PM   #15
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Got a 2 piece boomba, broke in recently, stiffer then a 15 year old about to lose his virginity and the ride is smoother then a womans face thats been pimp slapped with baby powder :B
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Old 05-16-2017, 07:56 AM   #16
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I'm running boomba stage 2. Awful vibes at first but after break in its not too bad. With a/c on it is quite noticeable but doesn't bother me.
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Old 05-16-2017, 10:31 AM   #17
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I have the Cobb and really didn't experience that much vibration when I installed it and definitely don't notice it now. I wonder if it matters that I tightened all bolts to the correct torque specs that are on the Cobb install video.
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