The 'dot' in MAPdot?

For discussing B&G MS-I/MS-II set-up and tuning of fuel parameters (including idle valves, etc.).
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.
Post Reply
jimfols
MegaSquirt Newbie
Posts: 3
Joined: Wed May 18, 2005 8:16 pm
Location: Ontario, Calif USA

The 'dot' in MAPdot?

Post by jimfols »

Hi,
I have my engine running and I'm tuning X-Tau.

I do not understand what the 'dot' stands for or where it comes from.

I hope I'll feel really stupid when I found out.

MS2
Code 2.89

Thank you, Jim
john.p.clegg

Re: The 'dot' in MAPdot?

Post by john.p.clegg »

Jim

I think "rate of change" is close..

John :)
vinister
Helpful Squirter
Posts: 47
Joined: Sat Dec 11, 2004 12:31 pm
Location: vancouver
Contact:

Re: The 'dot' in MAPdot?

Post by vinister »

Just think of the tuning screens, the red dot darts around all over when you stab the gas. How fast its accelerating/decelerating is your 'mapdot'.
Matt Cramer
Super Squirter
Posts: 2951
Joined: Sat Jul 03, 2004 11:35 am

Re: The 'dot' in MAPdot?

Post by Matt Cramer »

It's a calculus notation - the first derivative of a function. Or in math-phobe terms, "dot" means "how fast it changes."
jimfols
MegaSquirt Newbie
Posts: 3
Joined: Wed May 18, 2005 8:16 pm
Location: Ontario, Calif USA

Re: The 'dot' in MAPdot?

Post by jimfols »

Thanks all,
Those answers are perfect.

I am 'just' getting by as I do not understand derivatives.

I have the recommended SAE papers and I will start studying these and the
manual again with a new outlook.

Thanks,

Jim
Post Reply