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|5-Series (E12,E28, E34, E39, E60) Chat relating to the BMW 5-Series of all generations. Specific models include: BMW 518, BMW 520, BMW 520i, BMW 530i, BMW 528i, BMW 530i, BMW 518i, BMW 524d, BMW 525i, BMW 525e, BMW 528e, BMW 540i, BMW 535i, BMW 520d, BMW 525td, BMW 525d, BMW 530d, BMW 525i/xi, BMW 530i/xi. (BMW 5-Series Forum)|
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| Originally posted by billB@Oct 24 2004, 11:03 PM |
some people say that due to the lack of physical connection from the pedal to the throttle body means there is a LAG when you accelerate
I don't doubt your claim above for a second. Simply put if you completely floor the throttle say at 1500 RPM; the throttle butterflies might not completely open (no physical/cable connection) Though it will open to provide maximum acceleration without overwhelming the motor.
The computer would then automatically open the butterflies further as your RPM starts to climb and the engine can handle the additional load (in this case AIR).
This issue becomes more complicated since we don't know exactly how the throttle butterfly reacts to different inputs from the pedal. Equally important we do not know how the algorithm is constructed in the computer itself. Is the mapping 100% RPM dependant? If not how much of it is? At the end of the day we may have explained the LAG you just mentioned. EXCELLENT THINKING!
| Originally posted by billB@Oct 26 2004, 06:16 AM |
Thanks tons for the reminder somehow some what I was thinking 528I becaus I was helping other member (DOCSID with his AM radio on 528I) got a bit mixed up and overlooked the 540 biy. Confused? YES I am only HUMAN.
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