"It should be noted that the gain really comes in over 4000 rpm."
4th gear 4500 rpm : 139 km/h (86 mph)
5th gear 182 km/h (113 mph)
Really! I don't think that can be possible.
These speeds at 4500 rpm correspond to the gear ratios used on my 2005 PLUS 4. It means that with this engine tuning you don't have any benefits with the 4th and 5th gear on the road... if you want to keep your licence.
You are higher than the speed limits (in France): 90 km/h on normal roads and 130 km/h on highways. You can only get increased acceleration on 1/2/3 gear.
On my 2005 PLUS 4, with 3rd gear @ 4500 rpm, the corresponding speed is 100km/h (~60 mph)... higher than normal road limit.
With the gear ratios of my PLUS 4, it could be fine to get more power below 4000 rpm, or to have gear ratios which provide higher revs, ie 6000 rpm @ 180 km/h with 5th. With this configuration you will get higher acceleration on all gears.
At the moment with all the controls and radars you can do acceleration to 90 km/h with 1/2/3 and after you lift your foot to don't get a fee and keep your licence. In those circumstanses you need torque and power below 4000 rpm, except if you race.
