5er Instrument Accuracy
03-25-2009, 07:33 PM
#21
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My Ride: 2008 BMW 550i
2006 BMW X3
Originally Posted by sixcard' post='826831' date='Mar 25 2009, 08:44 PM
I have read my owner's manual and I agree with your monetary analysis, but tell me what harm it does to the engine.
Geez, I thought I got ripped at 72K? You paid 80?
Geez, I thought I got ripped at 72K? You paid 80?
I have gotten 27 mpg on the trip computer in a 75mph steady state cruise.
To answer your question, the computer probably changes the timing to compensate for the lower octane gas so no harm done. However the engine will be more efficient, mpg and performance-wise on the good stuff. It's certainly worth the relatively small difference in cost to me.
PS: I have seen 550i's that stickered in the 80's so its not an exaggeration.
03-26-2009, 04:25 AM
#22
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My Ride: 08 550 Carbon Sport Almost everything factory, but no sound upgrades.
Originally Posted by Richard in NC' post='826958' date='Mar 25 2009, 11:33 PM
You need to try the same run with 93 octane gas. I bet the MPG goes up by 1-2 mpg. You'll almost offset the cost difference.
I have gotten 27 mpg on the trip computer in a 75mph steady state cruise.
To answer your question, the computer probably changes the timing to compensate for the lower octane gas so no harm done. However the engine will be more efficient, mpg and performance-wise on the good stuff. It's certainly worth the relatively small difference in cost to me.
PS: I have seen 550i's that stickered in the 80's so its not an exaggeration.
I have gotten 27 mpg on the trip computer in a 75mph steady state cruise.
To answer your question, the computer probably changes the timing to compensate for the lower octane gas so no harm done. However the engine will be more efficient, mpg and performance-wise on the good stuff. It's certainly worth the relatively small difference in cost to me.
PS: I have seen 550i's that stickered in the 80's so its not an exaggeration.
I guess my ride could have ballooned to 80 with a few more goodies.
03-26-2009, 06:37 AM
#23
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Originally Posted by sixcard' post='826826' date='Mar 26 2009, 01:39 AM
I never heard of it until now. It is a German law.
)My tacho is constantly 3 km/h higher than real speed, at least up to 120 km/h.
03-26-2009, 08:55 AM
#24
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My Ride: 2008 550I,manufactured 2-27-08,delivered 4-2-08.Platinum bronze,natural brown interior,light poplar trim,cold weather package,heated rear seats,HD radio
Originally Posted by sixcard' post='827126' date='Mar 26 2009, 07:25 AM
Good comments, Rich. I plan do it again with 93. In fact we plan a trip to your Queen City in a month or so.
I guess my ride could have ballooned to 80 with a few more goodies.
I guess my ride could have ballooned to 80 with a few more goodies.
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