pgmfi.org

Hacking up Honda's ECU
It is currently Fri Aug 17, 2018 2:23 pm

All times are UTC - 5 hours [ DST ]





Post new topic Reply to topic  [ 2 posts ] 
Author Message
 Post subject: Ecu map navigation
PostPosted: Fri Nov 25, 2005 11:27 am 
Offline

Joined: Mon Mar 14, 2005 11:40 am
Posts: 365
Location: France - Paris
For people that are lost :

1net wrote:
In CROME the columns show the vacuum, and the rows show RPM.
So, if you are at idle, the engine is at low RPM, and since the throttle is closed, there is high vacuum. High vacuum = small mBar reading, so the ECU will be using the values from the upper ( low rpm), left-hand ( small mBar) portion of the maps.

At WOT, just before you hit the rev-limiter, there's high RPM and low vacuum because the throttle is open, so this time, the ECU will be using values from the lower ( high RPM), right-hand ( high mBar and low vacuum) part of the table.

If you were in this WOT situation and totally released the gas pedal, the revs would start rapidly falling. Right after you release the pedal, the ECU will see high revs and will stay in the bottom rows, but since you've closed the throttle, the vacuum wil become high, and the ECU will move to the left columns. So the ECU will be using value from the lower, left-hand side of the maps. And as you slow down with the gas released, the ECU will be staying in the left part of the map and slownly moving from bottom to top, as revs are decreasing.


viewtopic.php?p=54498


Top
 Profile  
Reply with quote  
 Post subject: Re: Ecu map navigation
PostPosted: Wed Feb 11, 2009 12:00 am 
Offline

Joined: Mon Feb 02, 2009 11:07 pm
Posts: 16
Location: middle GA
tooshay my friend, that cleared up some shit in my mind (lightblub above head turns on) lol
thank you


Top
 Profile  
Reply with quote  
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 2 posts ] 

All times are UTC - 5 hours [ DST ]


Who is online

Users browsing this forum: No registered users and 4 guests


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Search for:
Jump to:  


Powered by phpBB® Forum Software © phpBB Group