I finally got my ltrims negative. I had to multiply the IFR table by 85%. When I do a log and then export the data I have thousands of points and can't get the charts to look right. Everything is bunched up too tight to actually be useful, how do you guys make a chart? I have HP tuners and I am trying to get an idea of my a/f ratio using the O2's. I read I was supposed to drive around logging them and then average them is that correct? My O2's constanly switch the entire time I am driving except at WOT. They usually go from around 900 to 100 constanly and everywhere in between. After a log I average them and they always end up around 400-500. I don't understand how you guys are averaging out to around 900. Are my O2's supposed to switch like that? There is no way they will ever average 900's when they constantly jump up and down 800mvs. Am I doing something wrong? Also, I am getting knock but it is very light .4-.8 except when I let off the throttle at high rpms (eg. hard shifts or letting off and coasting at high rpms) and the map goes up pretty high and I get between 4-11 kr. How do I fix this? If I were going to try and run open loop all the time can I still use O2's to estimate afr? They stay pretty steady in open loop. I tried running open loop and the pcm only uses 2 fuel trim cells 20 and 22. Also the VE table in hp tuners is a table of numbers 45,30,48 etc. Are these percentages? Like at this map and rpm it is 45% efficient? When I log VE in the scanner is that giving me actual VE at that time or is it showing the number it is using in the VE table? How do I know how to adjust the VE table? What would changing a cell that says for example 35 to 45 do? I am very new and any and all help would be appreciated.
Thanks
Matt

 

Log all your data. export to a csv file and then import this file into access. run a query delete from table name where ftc=21 ro remove all the deceleration cells. Export back to a csv file with the headers included and use

http://automation.slowcar.net/

This program. It will figire out the ve's for you to use in HPtuners (at least gget you in the ball park) If you trims are still positve after this mult the IFR table by a percentage