Neat stuff Ryan!

I'll just sit back for a year or two and wait until you and other pioneers figure out how to get the most out of these new beasts! Then I'll begin to consider ordering a new one!

 

Always on overboost? I thought it activates only for limited periods and only around 4000/4500 rpm, not at all rev...

From the chart it seems the torque has two peaks, at 4000 and 2500, like it goes on overboost two times...and at around 3000 rpm the torque is 240 nm, as claimed.

Looking at the figure i would have thought it was a dyno of a chipped car.

 

Overboost is activated by your foot. If you slam on the throttle, you get overboost. If you gently roll into full throttle, you get normal boost. There's no magic timer like the Porsche 911 overboost. In the MINI, overboost starts in at a claimed 1600 RPM, and starts to cut back to normal boost at 4500 RPM, where from there to redline it's at normal boost. The MINI isn't always on overboost; you have to request it. For my dyno pulls, I requested overboost. You can clearly see this in my boost vs. RPM graph.

Yes there are two pronounced torque peaks. There is no "2nd overboost", you're just seeing the boost controller not doing its job correctly.

No my car isn't "chipped". The only thing plugged into it was an OBDII scan-tool.

Regards,
Ryan

 

Thanks, i didn't know that. I thought it was like in my V50 that goes up to 340 nm from 320 only for a short time.

Anyway, amazing figures.

 

Great numbers. These are very similar to Per's numbers, and we have to keep reminding ourselves these numbers are at the wheel!

As a previous owner of a 02 and a 05 I have no problem conceding to the 07 (and the fact that I should take delivery of the new 07 in the next week doesn't hurt either. Randy's probably tired of letting me drive his 07. )

Those who doubt...just go drive an 07...they are intense.

Kelly

 

Hey there Kelly; great to hear your '07 will arrive shortly! Yes my R56 has very similar numbers to Per's, which is good for consistent cross-car comparisons using DynoJet chassis dynos [near sea level that is].

There was a party last night at the local dealership where everyone got a chance to drive the new R56 MCS; the general consensus from R53 owners is the new cars engine is quick!

 

1st gear start at idle RPM – shift at 5750 RPM (34 MPH) > revs drop to 3700 RPM
2nd gear start at 3700 RPM – shift at 5750 RPM (53 MPH) > revs drop to 4000 RPM
3rd gear start at 4000 RPM – shift at 5750 RPM (77 MPH) > revs drop to 4400 RPM
4th gear start at 4400 RPM – shift at 5750 RPM (100 MPH) > revs drop to 4800 RPM
5th gear start at 4800 RPM – shift at 5750 RPM (120 MPH) > revs drop to 5000 RPM
6th gear start at 5000 RPM – 139 MPH at 5800 RPM


1st gear start at idle RPM – shift at 6500 RPM (39 MPH) > revs drop to 4200 RPM
2nd gear start at 4200 RPM – shift at 6500 RPM (60 MPH) > revs drop to 4500 RPM
3rd gear start at 4500 RPM – shift at 6500 RPM (87 MPH) > revs drop to 5000 RPM
4th gear start at 5000 RPM – shift at 6500 RPM (113 MPH) > revs drop to 5400 RPM
5th gear start at 5400 RPM – shift at 6500 RPM (136 MPH) > revs drop to 5600 RPM
6th gear start at 5600 RPM – 139 MPH at 5800 RPM

Based on the dyno chart, the power band is between 4500 and 5750 RPM. The power from 5750 to 6500 RPM seems to be equal to the power at 4300 RPM. So you when you shift you want your revs in the next gear to get as close to 4500 RPM as possible. Basically, for 1st and 2nd gear you want to shift at redline, and for the rest you want to shift at 5750 RPM.

This is true for simply putting the maximum power to the ground, but if you’re in a road course shifting too much might actually cost you seconds.

 

Brakefade: thanks for posting the shift point data; it's good to know where the upshift RPM will be at redline. That said, when you drive an R56, the power band isn't just from 4500 to 5750 rpm, it's effectively from 2k to redline. The turbos boost threshold is so low that you can be lost in the gears and not be too far off peak torque. This is wildly different than guys that are used to VTEC engines where it has to be over 6k to do anything, LOL!

 

It is wildly different between the R53 vs R56, the new engine just has so much more usable power~ The R53 is not slow, but like the VTECs(to some degree), you must push it to get to the power band, which isn't good in city driving imo. The R56's new engine completely solve that problem, way more easy to drive.
It's no competition tho when you compare a stock R53 vs a stock R56~ Hence, I am picking up my R56 on Tuesday!

 

I was trying to figure out how to put maximum power to the wheels, but yeah the mini has a lot of low end stuff. This engine reminds a lot of what a WRC car's dyno graph looks like. A crap load of engine torque at the low end, and a HP line that will peak right around the crossover point (5252).

 

How was the A/F ratio measured? Did you log it with an OBD-2 logger through the front O2 sensor, or was it a probe in the tail pipe?

-JL

 

The R56 MCS has a Bosch LSU 4.9 for its upstream O2 sensor. The OBDII outputs the upstream O2 in mA, which can be applied to the LSU's chart of mA = lambda. From there, you can deduce AFR based on the fuel you're running.

 

just letting you know your ride kicks major ***!!!