How about engine vibration and noise with the new motor mount. I replaced mounts on a Mazda Protege one time and noticed an increase in transmitted vibration and and stiffness in shifting that was not desirable.
I addressed that from 2:05-2:30 in the video with a clip; the increase in vibration is not bad at all.
About the worst it gets is sometimes creeping at low RPM (under 700) in gear it feels almost like I'm going to stall even when it's not going to stall out.
Very mild increase in vibration. I should state that though I may look externally OK in that video my hips are held together with a bunch of stainless steel screws and hardware (open book fracture, lh secral fracture, rh secral fracture, rh acetabular fracture) - this means that i am pretty sensitive to vibration/extreme harshness - like after I recovered and could walk again I tried operating my Suzuki Katana 600 and the 600cc DOHC I4 harmonized with the metal in my hips and I ached for days after - and why i had to give up the bike i loved so much
so what i'm getting at is that even though I'm sensitive, the vibration doesn't bother me (or my lady for that matter) and tbh it's made shifting smoother because the motor's not jumping around when i shift.
I'm not just makin bs up to sell these things, like, legit, I have been thrilled with the improvement they've made in the car and that's been the general consensus amongst those who've fitted one.
Here's the great thing: Cobb offers a satisfaction guarantee. If you get one of these, install it, and after driving around for a day or so, still hate it, you can return it for a full refund, and swapping between stock and cobb is a snap.
You can also go the powerflex route or 2j racing, all of these will be a great improvement to the car, but you have to be careful not to go too harsh and require a bit more work to swap in/out. As a direct bolt on solution, I think the Cobb engineers knocked it out of the park with these.
