Remaps
- Thread starter goon
- Start date
Steve220 said:
& makes it rev round the clock
sometimes making me pull off before it does :evil: probably the most responsive "sport" button on any car ive owned .a VW touareg tdi we had came with a sport button . . . once pressed it changed from plain slow to just lethargic
If you were in a new 35iS or a35 i I'd say go for it, it does make the car run better and I got 35mpg last weekend going to Lethbridge so if you want to make a "Virtual M" from a new one, yes.
As you already have an M, NO, it's not worth it .......and "Don't f**k with an M" is a pretty good rule to live by unless you have a racing garage and a stable of high priced mechanics :wink:
As you already have an M, NO, it's not worth it .......and "Don't f**k with an M" is a pretty good rule to live by unless you have a racing garage and a stable of high priced mechanics :wink:
Liverpool
Unless the engine mapping were totally rewritten, I doubt if you'll improve much on the compromise that exists between performance and economy in the OEM maps.
I've spent a lot of time using a datalogger connected to cars' ECUs, and if you want to drive for economy, then you have to adopt a totally different driving style, and this is shown by the readings of the Airflow Rate through the MAF. You need to keep the engine RPM between 2k - 2.5k rpm and select your gears accordingly, and use an "all or nothing" throttle application, so that you let the revs drop to 2k rpm then apply full throttle up to 2.5k rpm and then lift off and coast until the revs drop back down to 2k rpm, and so on. Likewise, you should use the topography of the road to assist you, by accelerating before reaching the bottom of hills rather than starting acceleration on the hill itself.
Since the ECU can only inject the appropriate amount of fuel commensurate with the Airflow Rate, applying full throttle at 2k- 2.5k rpm, less fuel will be used than if you are travelling at the same speed at higher revs in a lower gear. Likewise, when the car is coasting in gear, it uses very little fuel to keep the engine turning, and in fact, it uses LESS than it does if the engine is idling in neutral, or free-wheeling!
Driving for best fuel economy is a bloody horrible way of driving and I wouldn't advocate it at all, but you will see better fuel economy if you use an all or nothing throttle technique rather than constant even pressure to maintain a steady speed at all rpms.
If you REALLY want economy, get a little runaround that returns 70mpg and keep the ///M for proper driving.
I've spent a lot of time using a datalogger connected to cars' ECUs, and if you want to drive for economy, then you have to adopt a totally different driving style, and this is shown by the readings of the Airflow Rate through the MAF. You need to keep the engine RPM between 2k - 2.5k rpm and select your gears accordingly, and use an "all or nothing" throttle application, so that you let the revs drop to 2k rpm then apply full throttle up to 2.5k rpm and then lift off and coast until the revs drop back down to 2k rpm, and so on. Likewise, you should use the topography of the road to assist you, by accelerating before reaching the bottom of hills rather than starting acceleration on the hill itself.
Since the ECU can only inject the appropriate amount of fuel commensurate with the Airflow Rate, applying full throttle at 2k- 2.5k rpm, less fuel will be used than if you are travelling at the same speed at higher revs in a lower gear. Likewise, when the car is coasting in gear, it uses very little fuel to keep the engine turning, and in fact, it uses LESS than it does if the engine is idling in neutral, or free-wheeling!
Driving for best fuel economy is a bloody horrible way of driving and I wouldn't advocate it at all, but you will see better fuel economy if you use an all or nothing throttle technique rather than constant even pressure to maintain a steady speed at all rpms.
If you REALLY want economy, get a little runaround that returns 70mpg and keep the ///M for proper driving.
mad4slalom
Senior member
yeah maybe get a prius, hug a few trees, get som balsa wood sandals, change yr name to nick clegg, ....or just get in the m and kick ass :evil:
I'.m an NA man, but had many turbos in the past, all you have to do on turbo cars is up the boost pressure and you get instance increases...