I get a slight whine and occasional tremble at around 100kmh. It doesn't bother me much, even though normally I am averse to the slightest rattle. The thing is, I've been driving so many classic earlier performance cars with spur-cut gears and massive truck-like gearboxes that the occasional clanks, rumbles and vibrations, especially those that come with huge performance such as in the old 4.7 litre Ghibli and Maserati 5000 which even at idle shook around and sounded like feeding time at the zoo, that I actually don't mind them. I love the various sounds and sensations that come on under power, and shut off suddenly at each shift only to come on with a surge in the next gear, and feel we have become a bit insulated from them now. In fact this is why I like the MPS 6 as it feels more like some of those cars than many others I have driven, especially now it has been "tweaked".
On examining the MPS6 drive-train, I wouldn't be the least bit surprised to discover that a lot of the vibration comes from the centre-bearing in the drive shaft. It was a bloody curse in my V12 Sovereign that took me many attempts to get right, even knowing the source from the start. The Sovereign was otherwise so smooth that any tremble was readily evident.
---------- Post added at 02:18 PM ---------- Previous post was at 02:05 PM ----------
If you're getting real busy in the cockpit, you could mount the switch on your shift lever...I used such a setup on my old Landrover to control the 3 vacuum operated diff locks.
You could even have a red flip cover on it and label the positions as "guns" and "rockets" to intrigue your passengers... ;o)
CP_e Standback & PNP; CP_e 3" SS Downpipe; Corksport FMIC with Top-mount K&N filter & OEM Ram CAI; Turbosmart BOV; Dashhawk; Prosport Boost Guage; JBR solid shift bushes; DBA 4000 Wiper-Slot front rotors; Hawk Ferro-Carbon HPS Street front brake pads (@ 69,000km); Sumitomo HTRZIII's in 225/45 x 18