05-16-2021, 05:56 AM | #1 |
Second Lieutenant
95
Rep 253
Posts |
M340i - running in and fuel
Hi all - picking up my new M340i saloon at the end of the week. Any feedback on petrol type and running in? On the former, I ran Tesco Momentum 99 on my mk7.5 Golf R. On the latter, always seems to be a split of follow the book vs. as you like provided you warm it up. I tend to go with the book with full but not too aggressive use of rev range. Earliest mileage to launch? Earliest mileage Full throttle acceleration? (when warm)
|
05-16-2021, 06:26 AM | #2 | |
Major
542
Rep 1,139
Posts |
Quote:
|
|
Appreciate
0
|
05-16-2021, 07:11 AM | #3 |
King of the North (living in the east...)
1053
Rep 2,153
Posts |
I've got 63 Miles on the clock so far and taking it easy until 1000 Miles.
No kick down, no full bore acceleration. With respect to fuel, I'll be using Std unleaded, the car is designed to run on it. It's bloody economical under pootling I can tell you. Just drove around 25 Miles to pick the kids up, on the A14, Cruise set at 65mph. Result, 48 mpg over that distance. Not why I bought this car clearly, but good to know if needed for a longer journey, 48v mht crazyness me thinks.
__________________
2021 M340i in mineral white, options galore
Previously 2018 440i GC in MG 2015 330D F30 MSport EBII 2012 Alfa Guilietta 2.0d Veloce 2009 Fiat bravo sport 2000 ST Mondeo |
Appreciate
0
|
05-16-2021, 07:32 AM | #4 |
Lateral grip estimator
955
Rep 1,390
Posts |
I did as per the manual; avoided full load, going over 4500rpm, and going over 100mph.
Once the first 1000 miles were done I started to use a bit more revs each time the car was warm, so by the time I'd done about 1200 miles I'd hit the redline at least once. I've used 95 octane so far but at some point I will try half a dozen tanks of 99 and see how it feels and see if there's a difference in economy.
__________________
|
Appreciate
0
|
05-16-2021, 11:28 AM | #5 |
Ex Moddy
119
Rep 145
Posts |
Economy, yeah right...... we all want to know if there is any notable difference in performance!
__________________
X5 45e in Arctic Grey with Merino Leather, Technology Plus Pack, Comfort Pack, M Sport Pro Pack, Shadow Line Pack, Sky Lounge, Acoustic Glass, Tow Bar, Sun Protection Glass, Sky Lounge, Carbon Mirror Caps and Laser Lights.
|
Appreciate
0
|
05-16-2021, 11:55 AM | #6 | |
Lateral grip estimator
955
Rep 1,390
Posts |
Quote:
On previous cars I've seen good economy gains from using 99 octane which effectively negated the additional cost. The last time I rolling roaded back to back was on an N52 and the curves were the same up to 6700rpm, it was only above that the better fuel showed any gains. Net result? Extra 6bhp right at the top.
__________________
|
|
Appreciate
0
|
05-16-2021, 03:04 PM | #7 |
Brigadier General
2278
Rep 4,923
Posts |
Same, taking it easy (ish) not going over 5k and only when warm. TBH you don't need to go that high to make swift progress but it is so tempting just to floor it everywhere!
270miles in now and the engine is just fantastic so given a few k will be as great as I remember the b58 to be in my f31. Getting a nice noise now and is louder as expected, obviously unplugging the exhaust flap helps. I use Optimax or esso 99 now as I do a lot of short runs so I'd rather have more additives and cleaners in the fuel. As also mentioned the mht is really good and I'm very impressed which I didn't think I would be as works better on a petrol it seems. |
Appreciate
0
|
05-16-2021, 05:27 PM | #8 |
Ex Moddy
119
Rep 145
Posts |
Apologies for the off topic question but this statement caught my eye.... what exactly have you done and what's the net result in doing this?
__________________
X5 45e in Arctic Grey with Merino Leather, Technology Plus Pack, Comfort Pack, M Sport Pro Pack, Shadow Line Pack, Sky Lounge, Acoustic Glass, Tow Bar, Sun Protection Glass, Sky Lounge, Carbon Mirror Caps and Laser Lights.
|
Appreciate
0
|
05-17-2021, 12:55 AM | #9 |
Major General
1385
Rep 8,062
Posts |
Simply unplugging the exhaust flap actuator on the right-hand side exhaust outlet to give a better sound. I did it not so much for sound but so I didn’t have a situation where exhaust vapour was only coming out of one side giving the appearance of a fake exhaust.
|
Appreciate
0
|
05-17-2021, 02:43 AM | #10 | |
Colonel
1116
Rep 2,237
Posts |
Quote:
For 25 quid, it's worth it ! |
|
Appreciate
0
|
Post Reply |
Bookmarks |
Thread Tools | Search this Thread |
|
|