AlienTech Kess tuning of my E92 M3
Discussion
Just a general request for any information or help on the mapping of the M3 V8, I had a guy install my Eisenmann exhaust and he offered my an ECU map upgrade, after much discussion and negotiating I went ahead and did it, with his assurance that "you will love it!"
It does definitely improve the power delivery of the engine, most notably in the low and mid range of the revs. the program he used was Alientech Kess, the maps was called something like E92 Stage 1.
Thing is, my weekly commute fuel mileage has dropped significantly, and I can assure you I measure it closely and it's not just me having more fun now. I was able to get 22-24 mpg on my commute and now struggling to keep it above 19.
It was always my belief that you could remap an engine to give you more performance without badly effecting the fuel mileage, I did expect a little reduction but not this much.
I had though of trying to get a hold of the Alientech kit so I could keep the standard map for daily driving and drop the "Stage 1" map in for weekends or track days, but it looks like you need the application and a black box and cable, all for the tune of several thousand pounds.
The other alternative is to take the car to someone who can tune the car for me custom, like Ray West.
Any thoughts or suggestions?
Thanks all
It does definitely improve the power delivery of the engine, most notably in the low and mid range of the revs. the program he used was Alientech Kess, the maps was called something like E92 Stage 1.
Thing is, my weekly commute fuel mileage has dropped significantly, and I can assure you I measure it closely and it's not just me having more fun now. I was able to get 22-24 mpg on my commute and now struggling to keep it above 19.
It was always my belief that you could remap an engine to give you more performance without badly effecting the fuel mileage, I did expect a little reduction but not this much.
I had though of trying to get a hold of the Alientech kit so I could keep the standard map for daily driving and drop the "Stage 1" map in for weekends or track days, but it looks like you need the application and a black box and cable, all for the tune of several thousand pounds.
The other alternative is to take the car to someone who can tune the car for me custom, like Ray West.
Any thoughts or suggestions?
Thanks all
BMW, as do all manufacturers, have to make the maps so that people who do not adhere to correct service intervals, fuel types etc etc do not end up with a knackered car, so while the maps may be very good, they cannot be at the pinnacle "just in case".
I'll give you an old instance. Ford limited the standard boost figure to 9psi on their Cosworth models, but the map on the ECU was set up to fuel up to 1 bar of boost (14.7psi). All the tuners had to do for a stage 1 conversion was remove the boost limiter. This was told to me by a very reputable tuning company.
I'll give you an old instance. Ford limited the standard boost figure to 9psi on their Cosworth models, but the map on the ECU was set up to fuel up to 1 bar of boost (14.7psi). All the tuners had to do for a stage 1 conversion was remove the boost limiter. This was told to me by a very reputable tuning company.
Something like a "Stage 1" will probably expect minor breathing mods (at least a drop in filter) to go with your exhaust mods. It sounds like the map is just dumping extra fuel in at cruising revs to try and gain some low down power. Extra fuel helps cool the intake temps and obviously more fuel = more potential energy. N/A tuning is always expensive and remaps rarely get much more than the manufacturers already found.
TheAngryDog said:
BMW, as do all manufacturers, have to make the maps so that people who do not adhere to correct service intervals, fuel types etc etc do not end up with a knackered car, so while the maps may be very good, they cannot be at the pinnacle "just in case".
I'll give you an old instance. Ford limited the standard boost figure to 9psi on their Cosworth models, but the map on the ECU was set up to fuel up to 1 bar of boost (14.7psi). All the tuners had to do for a stage 1 conversion was remove the boost limiter. This was told to me by a very reputable tuning company.
But that's a turbo car my point is for na remapsI'll give you an old instance. Ford limited the standard boost figure to 9psi on their Cosworth models, but the map on the ECU was set up to fuel up to 1 bar of boost (14.7psi). All the tuners had to do for a stage 1 conversion was remove the boost limiter. This was told to me by a very reputable tuning company.
dvshannow said:
TheAngryDog said:
BMW, as do all manufacturers, have to make the maps so that people who do not adhere to correct service intervals, fuel types etc etc do not end up with a knackered car, so while the maps may be very good, they cannot be at the pinnacle "just in case".
I'll give you an old instance. Ford limited the standard boost figure to 9psi on their Cosworth models, but the map on the ECU was set up to fuel up to 1 bar of boost (14.7psi). All the tuners had to do for a stage 1 conversion was remove the boost limiter. This was told to me by a very reputable tuning company.
But that's a turbo car my point is for na remapsI'll give you an old instance. Ford limited the standard boost figure to 9psi on their Cosworth models, but the map on the ECU was set up to fuel up to 1 bar of boost (14.7psi). All the tuners had to do for a stage 1 conversion was remove the boost limiter. This was told to me by a very reputable tuning company.
I thought the map was worthwhile, offered decent VFM and wouldn't hesitate to map NA in the future.
Edited by Crackie on Sunday 22 February 22:04
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