Worse case scenario, if they dont get to an acceptable level after the break in then maybe I will go back to stock and just swap when I am looking for more spirited driving. Since it only takes like 10 min to do.
These mounts actually are polyurethane, not sure why people are calling them "soild" cause they definitely are not. Replacing both mounts was literally like 10 min super easy. Just make sure you use a second jack on the motor cause it will drop about 6 inches if not secured by 2nd jack.
I definitely feel your concerns with the cons to this mod. Aggressive vibrations/extra drone in a commuter car isnt usually a good thing. I have always hated how disconnected the car feels to me which is why I bit the bullet to give it a try. Most people on here seem to be happy with them as long as they get them past the break in period. Which is why I am going to wait on my judgment until then
As for the 93 octane, I haven't notice much if any increase in mpg besides the overall increase the more mods I do. However when i was running 87 even during light/moderate acceleration I would notice almost like a slight sputter. After the 93 this completely went away and it runs soo much smoother. This along for the longevity of it is well worth the extra 20-30 cents especially when I get ~38 mpg the difference in cost per week is very minor. Granted I am coming from my 2 previous cars 97' stang and 96' camaro that would both require 93 octane and only 10 mpg if I granny drove the stang or 14 mpg for the camaro.
Yeah the mounts have been in for 600 miles now starting to feel pretty good. The vibrations are down to about 1/3rd of what they were when first installed and the drone is probably about half.
This makes me sad- I really didn't feel a difference from the mounts except shifting.
Get the short throw
I guess thats another good thing about the RS gearing is keeping the rpms high to reduce vibs on these mounts
That's a really good point, I hadn't even thought of that. It shouldn't be an issue for you guys then (if yours is the same as mine) because it's not bad revving thru, just if you cruise at that speed.
I had actually considered swapping the shafts from an RS into my LT trans to get your peppy low end but good cruising mpg. Maybe one day
i want to grab an LTZ tranny and try to swap he 6th gear. Theoretically should be a good happy medium. Nice short gears for city/town and better cruising mpg in 6th. With the final drive as high as it is in the RS i can only guess it would drop the rpms to about 2k ish at 60 which would be perfect. Right now im at 3k at 60 and correct me if im wrong but during my test drive it seemed like 70 was at 2k in 6th on an ltz.