Jump to content

Short pulse width adder values


MGV101
 Share

Recommended Posts

Should the short pulse with adder values be in +ve or -ve?

Previously I have used +ve numbers for the values but I am building up a new map today for a new ECU using the sample base map for my Fury and noted that all numbers are in negative. Tried looking at other base map too and noted they are also entered as -ve numbers. Does it mean logic of the G4+ actually adds the value entered into the tables to determine the effective pulse width and therefore -ve numbers should be entered for it to work properly? Meaning I have entered the wrong numbers into the pulse width adder all along?

Link to comment
Share on other sites

They can be positive or negative, it just depends on whether the injector squirts more or less fuel than the "straight line" curve would predict.  For instance if you look at ID1000 data the adders are all positive on the other hand the data for the ID1050X injector is mostly negative.

Link to comment
Share on other sites

Thanks! I was always under the impression that the injectors would always been injecting less fuel than the "straight line" curve given it takes time for the nozzle to fully open and that's why I found the base map strange. I am using ID850 so it was correct to use positive numbers then.

Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

Loading...
 Share

×
×
  • Create New...