Mark,
That is correct. To tune the barometric correction you need to re-generate the baro-factor table, then re-assemble the code. (In case anyone is wondering, I don't recall of the top of my head how this would be done with MS-II.) An EasyTherm-like mechanism would be pretty simple to implement, the exact same table structure is used by all tables, and the correction factor seems like it should have the same characteristic curve as Bruce's above, but with a different coefficient for different engines.
Eric
Barometric correction
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).
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).
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.
The MS-II interface would make a nice one for EasyBaro...-
Tortfeaser
- MegaSquirt Newbie
- Posts: 5
- Joined: Tue May 11, 2004 6:24 pm
- Location: Canberra, Australia.
Could this be the reason for my problem? See viewtopic.php?p=113302
Car (at home now) is now behaving normally, no problem. High compression (11.5:1), long duration cam, 4:1 exhaust with very little restriction (virtually unmuffled).
Car (at home now) is now behaving normally, no problem. High compression (11.5:1), long duration cam, 4:1 exhaust with very little restriction (virtually unmuffled).
efahl wrote:Erik,Erik88GT wrote:Can we say with certainty that no one has complained about the MS baro correction being wrong in actual usage?
No, indeed we have had people that had problems with the current implementation. I recall one guy who tried to use it on a race car with an open exhaust and high CR, where the hard-coded correction factors were overcorrecting badly. I think that the ability to tune the algorithm (as in MS-II) is crucial to making it work in general, as the chamber size and exhaust plumbing should impact the required correction quite a bit.
Eric
Marc Kelly
MS'd AE82 Toyota Corolla shitta
MSnS-E'd Holden Camira rally car
In Canberra, Australia.
MS'd AE82 Toyota Corolla shitta
MSnS-E'd Holden Camira rally car
In Canberra, Australia.