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10-31-2011, 07:06 AM | #1 |
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Bmw m3 v8 engine usa vs europe spec.
Hi Guys,
I am new in this forum. I am an owner of BMW M3 e90 interlagos blue...pictures soon however i have got a problem... Does someone know what is the difference between USA and EUROPE engine spec as the difference in fuel consumption is huge... I have got a USA spec car and my friend has got EU spec and the consumption difference is around 4-6 liters per 100 km.... As far as i know the EU is a bit more powerful so when it is more economical and quicker...why not to change the map... Is it possible to change the map of the engine from USA to Europe without having any problems afterwards? THANKS !!!! |
10-31-2011, 07:13 AM | #2 |
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Surely the only rational explanation is driving style. Have never heard of the S65 from various countries being any different to each other.
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Last edited by jonasaurus; 10-31-2011 at 07:24 AM.. |
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10-31-2011, 07:14 AM | #3 | ||
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10-31-2011, 07:31 AM | #4 |
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OP - why did you start another identical thread in the Tech Topics Forum - Engine, Drivetrain,...ECU Mods?
Admin - please combine the two threads. Thanks. I agree with what's been stated above - no difference in power or fuel consumption, I think it's different driving styles and car build configurations. |
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10-31-2011, 08:07 AM | #5 |
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Guys I think you are all wrong. I heard that there is an extra thing in the tank of the USA spec and as a result the computer puts more petrol that is why USA spec consumes more petrol...apparently when u change the program, the mistakes shows on the dashboard.....guys so?? I thought u would know that guys....
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10-31-2011, 08:23 AM | #7 |
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What is the "extra thing in the tank" you're referencing? I've never heard of the difference you're describing.
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10-31-2011, 08:39 AM | #8 |
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I believe the only difference is how fuel consumption is measured in the US and Europe.
So a US-spec car is consuming more fuel due to "extra thing in the tank" yet it makes the same power as the Euro-spec car? It must be a conspiracy so US-spec cars get hit with a Gas Guzzler Tax |
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10-31-2011, 08:53 AM | #9 |
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So basically there r 2 things which differs euro spec to USA spec. first thing is because of USA regulation, the USA spec m3 has got a sensor which takes out the air from the tank. If u change the soft to European it will show a mistake because the sensor doesn't exsist in the European spec and after driving the pressure increases and the car might stop because of air in the filter, not petrol.. Secondly the cats are different and as a result the USA spec gives more fuel to injection... Another us regulation... I talked with the Guy from BMW motorsport department in Munich which only looks at m powers... Did someone know that?
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10-31-2011, 09:13 AM | #10 | |
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10-31-2011, 09:22 AM | #11 | |
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Seems logical that you would go back to the same guy and ask him your question-- am assuming the guy is still alive
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10-31-2011, 09:28 AM | #12 |
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i think he got confused
EU version makes 420 hp US makes 414 but that's not a difference of power it's just the difference between horsepower when measured in DIN or SAE specs its the same power thats like saying the EU version has a top speed of 250 while the US has a top speed of 155 well yes, but the 250 is in km/h and the 155 is in miles per hour same top speed, just different ways of measuring it
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10-31-2011, 09:30 AM | #13 |
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10-31-2011, 09:40 AM | #14 |
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I'm pretty sure the difference in the printed MPG figures is the difference in European and American testing cycle standards and the difference between imperial miles vs US miles (yes there's a difference, you have to convert the figures properly).
Unless the figures you're seeing is from just on the engine itself versus the full vehicle (cycle) test, but you're comparing apples and oranges here. http://www.fueleconomy.gov/feg/how_tested.shtml http://www.epa.gov/fueleconomy/ Can't find a good Euro testing site, (maybe others can help) http://herkules.oulu.fi/isbn9514269543/html/x787.html http://en.wikipedia.org/wiki/Fuel_ec...s#cite_note-23 |
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10-31-2011, 09:46 AM | #15 | |
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10-31-2011, 09:47 AM | #16 |
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Miles are the same, the difference is US vs Imperial Gallons
U.S. Gallons 1 MPG ≈ 0.425 km/l 235.2/MPG ≈ l/100 km 1 MPG ≈ 1.201 MPG (Imp) Imperial gallons 1 MPG ≈ 0.354 km/l 282/MPG ≈ l/100 km 1 MPG ≈ 0.833 MPG (U.S.)
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10-31-2011, 09:47 AM | #17 | |
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maybe we are all wrong?
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10-31-2011, 09:47 AM | #18 | |
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10-31-2011, 09:55 AM | #19 |
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Basically the problem is that the Guy as BMW head of department can not see the solution apart from changing the tank...however he said that there are some solution which are available on aftermarkt forums or websides...I thought someone knew something ((
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10-31-2011, 10:07 AM | #21 | |
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Wrong also on the catalytic converters, they are the same, I mean exactly the same as in the same BMW part number. This verified through BMW's ETK for an 11/2009 build BMW E92 M3 Coupe.
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10-31-2011, 10:22 AM | #22 |
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Given op is legit, the only thing I can think of is US spec cars are program to compensate for crappy gas. I mean here in CA we can only get 91 octane.
Why dont you (OP) re flash to euro spec and tell us what happen. |
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