fuel cut tips

98vtec · Post by **98vtec** » Fri Jun 26, 2009 10:06 am

it also depends on how you guys drive. If you load up the throttle, no fuel cut in the world will keep it from going rich. One thing i found that helped was to lower the \"overall\" fueling and add the same amount that you removed from there, highlight the map and ctrl + J and add back the same amount that you removed.

Post by **calvin** » Fri Jun 26, 2009 10:14 am

see file started with 6000 rpm drop tps 0 drop mbar below cut decel to 1000 rpm. no problems

combz · Post by **combz** » Fri Jun 26, 2009 12:10 pm

i looked at your engine sim log calvin...looks nice..haha i wish mine worked like that.but it doesnt. One thing. the \"below load\" area in Parameters-->fuel cut this should have a drop down menu like all the other places, you cannot change mbar to say \"in hg gauge\". Everywhere else you have a drop down menu to select units, here im forced to use mbar..so i have to go to settings, change my units to mbar, in order to know what your talking about in the fuel cut parameters window. The last column in my .cal file is 225mbar so in fuel cut parameters i set the \"below load\" to 225mbar. I'm looking at my datalogs and it appears when fuel cut goes off and on, its when my mbar goes to 225 for a split second (zoom in and check it out), even though i am off throttle. So maybe setting my \"below load\" to like 250mbar or 230? might fix it?? I'll do this..test ..datalog and report logs back. here is the fuel cut datalogs.. check comments on each. also find my .cal file attached again.

Post by **calvin** » Fri Jun 26, 2009 1:35 pm

combz wrote:i looked at your engine sim log calvin...looks nice..haha i wish mine worked like that.but it doesnt. One thing. the "below load" area in Parameters-->fuel cut this should have a drop down menu like all the other places, you cannot change mbar to say "in hg gauge". Everywhere else you have a drop down menu to select units, here im forced to use mbar..so i have to go to settings, change my units to mbar, in order to know what your talking about in the fuel cut parameters window. The last column in my .cal file is 225mbar so in fuel cut parameters i set the "below load" to 225mbar. I'm looking at my datalogs and it appears when fuel cut goes off and on, its when my mbar goes to 225 for a split second (zoom in and check it out), even though i am off throttle. So maybe setting my "below load" to like 250mbar or 230? might fix it?? I'll do this..test ..datalog and report logs back. here is the fuel cut datalogs.. check comments on each. also find my .cal file attached again.

yes but.. i can show you on engine sim unusual stuff. I'll post some logs.

Post by **calvin** » Sat Jun 27, 2009 9:27 am

tps based fuelcut mbar no effect.

DSMR · Post by **DSMR** » Mon Jun 29, 2009 9:15 am

Yesterday my fuel cut was acting funny. It would work sometimes and other it would just go into a \"lean\" mode and not fully cut. This may be an issue on the cars end b/c of the IACV being wierd but I will do some testing and get a log if it does it again.

combz · Post by **combz** » Mon Jun 29, 2009 10:46 am

i took a few more logs..long ones. it works most of the time, but sometimes doesn't. changing the bwlow load to 230mbar didnt do anything. in the logs fuel cut still turns off, seems like 225 is the magic number.. my logs show that vaccum blips to 225 sometimes...like goes from 210mbar, fuel cut is on then blips to 225 and fuel cut turns off..even if i set below load to 230 or 250.. it still goes off at 225. i cant explain it. i'll post logs at lunch.

elevation · Post by **elevation** » Mon Jun 29, 2009 1:29 pm

Ok I had trouble with it yester day so I used the engine sim today. The weird thing is it was working perfect for awhile and then outta nowhere i get this. set to cut @ 5% and 280map.

combz · Post by **combz** » Mon Jun 29, 2009 3:32 pm

here its not working..

elevation · Post by **elevation** » Mon Jun 29, 2009 5:16 pm

just checked 64 and its totally messed up!! It dosent react to mbar at all!! the fuel cut light comes on with tps but fuel injector duration stays the same. in 63 the mbar works, the fuel light comes on and injector duration goes to 0 with tps the fuel cut light comes on but injector duration stays the same.

Post by **calvin** » Tue Jun 30, 2009 9:59 am

don't use 64

Maddog20 · Post by **Maddog20** » Wed Jul 08, 2009 4:14 pm

what version has the Fuel Cut feature working correctly? Just went for a drive and it isnt working. It has been working great up until these last few updates.

Post by **Synoptic** » Wed Jul 08, 2009 4:37 pm

I had trouble too, but I noticed that my vacuum in decel was much higher than the default in eCtune. I had to put mine at 250mbar, because I dont stay long enough below 178 for the fuelcut to turn on. Also, the datalogging sampling rate is not fast enough to pickup the decel mbar if you record and check afterward! In my case, the logs showed aloway below 178, and the fuelcut was going on and off rapidly 3 times. after moving the mbar thresold to a higher value, problem is now fixed.

Post by **calvin** » Thu Jul 09, 2009 8:43 am

Synoptic wrote:I had trouble too, but I noticed that my vacuum in decel was much higher than the default in eCtune. I had to put mine at 250mbar, because I dont stay long enough below 178 for the fuelcut to turn on. Also, the datalogging sampling rate is not fast enough to pickup the decel mbar if you record and check afterward! In my case, the logs showed aloway below 178, and the fuelcut was going on and off rapidly 3 times. after moving the mbar thresold to a higher value, problem is now fixed.

same what i see on engine sim. Maybe i need to get my car out of the garage after 3 months?

Maddog20 · Post by **Maddog20** » Sun Jul 12, 2009 4:47 pm

Still not having any luck. Up until these last few updates it worked great...is something different now with ver. 2.3r3? I adjusted the load setting from 198mbar to 260mbar. According to my logs I am going well below 260mbar somewhere around 160mbar. If I am messing up somewhere can someone please point it out to me? Here is my cal and log file WBO2 is LC-1 Thanks