Hi,
So I have a BMW M30 with single coil ignition and a VR sensor reading a 60-2 trigger wheel. But when I crank the motor (fuel pump turned off) the RPM reads at about 3800-4000 RPM. I believe I have the correct settings as I compared to other people's settings with the same setup. Any idea on what this could be?
Thank you!
Reading wrong RPM with VR
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Read the manual to see if your question is answered there before posting. Many users will not reply if the answer is already available in the manual.
If your question is about troubleshooting, configuration, or tuning, you MUST include your processor type (MS-I or MS-II) and code version in your post. If your question is about PCB assembly or modifications, you must also include the main board version number (1.01, 2.2 or 3.0). For tuning/troubleshooting questions, please attached a datalog and your MSQ file to your post.
If you have questions about MS1/Extra or MS2/Extra code configuration or tuning, please post them at www.msextra.com Such questions posted here will be moved to: a temporary MSextra sub-forum, where they will be removed after 7 days
The full forum rules are here: Forum Rules, be sure to read them all regularly.
Re: Reading wrong RPM with VR
It this cranking RPM as read in Tuner Studio? If so, post your MSQ file here.
Dave P, London UK.
Rover V-8
MSII V3
EDIS
Tech Edge Wideband
Rover V-8
MSII V3
EDIS
Tech Edge Wideband
Re: Reading wrong RPM with VR
Is it something with 'skip teeth' for tach? How do I calculate what that value should be for a 60-2 wheel? Is it 60 because 60 is one full revolution?
Re: Reading wrong RPM with VR
As previously asked .... is this the rpm you are seeing in tuner studio ... or is it on the rev counter in the car?
The 60 -2 wheel is just set up as a trigger wheel ... then set 60 teeth and 2 missing teeth. If tuner studio is reading 4000 ... there is something wrong with either the trigger wheel settings ... or the board has not been set up for a VR input and is getting confused. or if the rpm is jumping around all over the place ... then it is likely that the sensor is not correctly aligned with the trigger wheel.
The 60 -2 wheel is just set up as a trigger wheel ... then set 60 teeth and 2 missing teeth. If tuner studio is reading 4000 ... there is something wrong with either the trigger wheel settings ... or the board has not been set up for a VR input and is getting confused. or if the rpm is jumping around all over the place ... then it is likely that the sensor is not correctly aligned with the trigger wheel.
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Matt Cramer
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Re: Reading wrong RPM with VR
Can you post your MSQ?
