RPM in TunerStudio reads double
Forum rules
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.
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.
-
K.pokBriggs
- MegaSquirt Newbie
- Posts: 3
- Joined: Mon Jan 24, 2011 1:23 pm
RPM in TunerStudio reads double
I'm setting up the injection system to run a single cyl air cooled engine. I'm using a encoder for the tach signal, this fires once very 360 deg. In Tuner Studio the RPM is reading double of what it is. Is there anywhere in the software to correct this?
-
Matt Cramer
- Super Squirter
- Posts: 2951
- Joined: Sat Jul 03, 2004 11:35 am
Re: RPM in TunerStudio reads double
Set the number of cylinders to half its real value.
-
K.pokBriggs
- MegaSquirt Newbie
- Posts: 3
- Joined: Mon Jan 24, 2011 1:23 pm
Re: RPM in TunerStudio reads double
This is a single cyl engine, so the clyinders is set to 1. I'm going to try to gear down the encoder 2-1 so it is running at cam speed. I'm hoping this is going ot be a fix.
-
Matt Cramer
- Super Squirter
- Posts: 2951
- Joined: Sat Jul 03, 2004 11:35 am
Re: RPM in TunerStudio reads double
My mistake, my post should have said double, not half (e.g. set it for a two cylinder in your case.)
-
K.pokBriggs
- MegaSquirt Newbie
- Posts: 3
- Joined: Mon Jan 24, 2011 1:23 pm
Re: RPM in TunerStudio reads double
The 2-1 for the encoder has taken care of the RPM problem and it has taken care of which TDC mark to follow. Its now triggering the same as a cam trigger. Now on to the next problem. I'm sure I'll be posting more questions. Thanks for the help.