long term fuel adjustment?

hondapowaa · Post by **hondapowaa** » Sun Mar 22, 2009 4:29 pm

Hello,

If i'm right, in stock ecu we have a routine for the short term fuel adjustment( s300 too) and "a table" for the long term fuel adjustment.

This last table set itself(with the help of short term) when car is on the road and after few kilometers the ecu know exactly how many fuel must be injected.

For sure we must be in closed loop mode.

My question is => does the hondata have this long term fuel adjustment too??

Post by **Hondata** » Mon Mar 23, 2009 8:37 am

hondapowaa · Post by **hondapowaa** » Mon Mar 23, 2009 1:50 pm

Hondata wrote:Yes.

Ok.

Can you tell me approximately how many kilometers(or other thing) we must done to have a correct long term fuel table?

And can you tell me when this table is reset?
(when we desactivate closedloop mode? when we change fuel map or other settings on the map? other)

thanks

Post by **Spunkster** » Mon Mar 23, 2009 2:18 pm

Since the ECU is now programmable you should tune so that your long term trim is as close to 0 as possible.

It is only reset if the ecu completely looses power...such as unplugging it.

hondapowaa · Post by **hondapowaa** » Mon Mar 23, 2009 2:42 pm

Spunkster wrote:Since the ECU is now programmable you should tune so that your long term trim is as close to 0 as possible.

It is only reset if the ecu completely looses power...such as unplugging it.

The long term fuel tables are in the s300 or we use the oem tables?

Post by **Spunkster** » Mon Mar 23, 2009 2:59 pm

there are no long term tables...the trim is adjusted over time based on short term trim which then will either increase or decrease the long term trim.