I saw huge improvements on my mazdaspeed3 when I changed those. It shifted better and lurched less and all kinds of improvements. It did however increase NHV. Fuck im gonna get em. I didnt buy this car to be a caddie anyway.
Same here. I did just the front motor mount (AMS 70A durometer, so nothing crazy) and overall shifting/lurching was GREAAATLY improved.
If you get stiffer motor mounts, it will rattle the interior more, but they do break in after a while and become more mild.
Exactly. First few weeks you get a little more vibration, at first you go "WTF did I do???" then they break in and settle and you don't even really notice it anymore. The benefit, to me, is worth it. The initial vibrations, with 70A mount at least, was very little regardless. You get the same vibration in the car with just a Tomei exhaust I think - haha.
Now add tomei exhaust and cams and you have quite a massage chair underneath you. lol
Would it be better to go with the AMS urethane type or Boomba solid?
Urethane for street/DD definitely. Solid will vibrate more and never "settle"/break in, there'll be no dampening whatsoever.
Try to use the urethane ones with the stock mounts. The only one you may want to change would be the rear mount as a modular aftermarket one makes for easy working down there.
Yea. Best part is with AMS you can buy the entire mount as a unit instead of paying a shop to press a new bushing in. Costs a little more but then it's a direct unbolt/bolt swap (takes 30 mins MAX) and you can undo if you don't like it and sell.
