knock sensors ?

[abc]

i think im gettING ITTTTTT!!!!!!!!!

It does look like you came a long way. I peaked at your VE table, it looks like you took the smoothing comment too far. Your VE table looks a little to fabricated or too smooth. Give the engine what it wants and don't go crazy with the smooth button. Your getting better and now you can manually go in and lightly smooth around the recently corrected areas every time you make a change, then of course go retest.

[mychevyisntheavy]

It does look like you came a long way. I peaked at your VE table, it looks like you took the smoothing comment too far. Your VE table looks a little to fabricated or too smooth. Give the engine what it wants and don't go crazy with the smooth button. Your getting better and now you can manually go in and lightly smooth around the recently corrected areas every time you make a change, then of course go retest.

i only smooth in both directions one each time. i put the errors in half % then smooth in each way one time. should i not smooth at all, and i had a miss, checked plug wires yep had 3 not right, so changed those and put a new set plugs in. should i start a new ve or go back to the beginning being i didnt know what i was doing or still dont but got a little better understanding with the ve tuning ............this is the latest tuning and logging , there is two tunes from the log, one is smooth the other is not smoothing.

[mychevyisntheavy]

i only smooth in both directions one each time. i put the errors in half % then smooth in each way one time. should i not smooth at all, and i had a miss, checked plug wires yep had 3 not right, so changed those and put a new set plugs in. should i start a new ve or go back to the beginning being i didnt know what i was doing or still dont but got a little better understanding with the ve tuning

what about using this thune for my ve. its a new starting point? same all other data, just changed the ve to start it over? what you guys thing?

[twenglish1]

I dont see any reason to start over, it will start taking shape, you have already made some good progress, in all honesty it doesn't matter how it looks, function is key here, the goal is to get your fuel trims as close to zero, you do want the table to be smooth though, not unusual to have valleys and such though, the pair of log and tune you posted above, did you already apply that log to the tune? or was that the log you recorded while running that tune?

[mychevyisntheavy]

I dont see any reason to start over, it will start taking shape, you have already made some good progress, in all honesty it doesn't matter how it looks, function is key here, the goal is to get your fuel trims as close to zero, you do want the table to be smooth though, not unusual to have valleys and such though, the pair of log and tune you posted above, did you already apply that log to the tune? or was that the log you recorded while running that tune?

the post with the log is the tune i have in my truck right now. it was the logging i used to make the tune in the same post as the log. i logged , then used that log to make the tune that is with the log.... i plan on loggging in the am then make changes how much longer should i tune this. im getting close to + or - 5% your? im not gonna start it over, i just was tryingto see if this what you guys think i shoiuld do. trust me i dont want to. id rather hammer this thing out. but right

[mychevyisntheavy]

the post with the log is the tune i have in my truck right now. it was the logging i used to make the tune in the same post as the log. i logged , then used that log to make the tune that is with the log.... i plan on loggging in the am then make changes how much longer should i tune this. im getting close to + or - 5% your? im not gonna start it over, i just was tryingto see if this what you guys think i shoiuld do. trust me i dont want to. id rather hammer this thing out. but right

here is another run/log, and the tune after the run.. i made the changes from red to green and smooth out in each direction one time each. same as last times

[abc]

I agree, no reason to start over. Keep doing what your doing, at this point just don't hit the smooth all button or don't highlight large portions of your VE table and hit the smooth button. When your as close as you say your are, I like to apply the changes from the LTFT by 1/2% like you are, then look at the shape of the VE table, if the changes created any massive holes or mountains in the table, I will grab each cell one at a time and drag it smooth just by a small percentage if the data supports it, then go retest. Often times I will even open the VE table and VE graph side by side on the screen, make changes by percentage in individual cells and watch the VE graph change in real time. Based on the scaling of the VE numbers, sometimes making it pleasing to the eye is less than a 1 percent change in a cell or two. The engine may never even notice the change but in the scale we are looking at the VE graph it will look much prettier. I'm gonna guess at this point you have heard that the VE graph should resemble the shape of a plotted dyno graph of your engine, if your dyno graph was presented to you in a two dimensional format. With that said, your engine does not build VE in a perfectly smooth straight line as it accelerates, there will be peaks and valleys, yet it is unrealistic to think the engine would drop or gain 10% or more VE from one cell to the next in any one direction when your dealing with 400 rpm increments and 5 kpa changes.

The last version of the VE table does look more normal. I'm sure your noticing the difference between the cells your working on and the ones you just smoothed all above about the 5200 rpm line. Do to the fact that most of us are hobbyists, we don't have the experience of hundreds of "start from the beginning tunes" and don't take the time to get a lot of the math channels/formulas working in our favor to speed the process up.

[mychevyisntheavy]

I agree, no reason to start over. Keep doing what your doing, at this point just don't hit the smooth all button or don't highlight large portions of your VE table and hit the smooth button. When your as close as you say your are, I like to apply the changes from the LTFT by 1/2% like you are, then look at the shape of the VE table, if the changes created any massive holes or mountains in the table, I will grab each cell one at a time and drag it smooth just by a small percentage if the data supports it, then go retest. Often times I will even open the VE table and VE graph side by side on the screen, make changes by percentage in individual cells and watch the VE graph change in real time. Based on the scaling of the VE numbers, sometimes making it pleasing to the eye is less than a 1 percent change in a cell or two. The engine may never even notice the change but in the scale we are looking at the VE graph it will look much prettier. I'm gonna guess at this point you have heard that the VE graph should resemble the shape of a plotted dyno graph of your engine, if your dyno graph was presented to you in a two dimensional format. With that said, your engine does not build VE in a perfectly smooth straight line as it accelerates, there will be peaks and valleys, yet it is unrealistic to think the engine would drop or gain 10% or more VE from one cell to the next in any one direction when your dealing with 400 rpm increments and 5 kpa changes.

The last version of the VE table does look more normal. I'm sure your noticing the difference between the cells your working on and the ones you just smoothed all above about the 5200 rpm line. Do to the fact that most of us are hobbyists, we don't have the experience of hundreds of "start from the beginning tunes" and don't take the time to get a lot of the math channels/formulas working in our favor to speed the process up.

i was just smoothing like i said in side by side,one time, and then up and down one time. other than getting the red to change to green in the individual boxes in the graft i only smooth one time. up down, left to right. the ve took its self to what itis now. i started with stock ve table, i had a pcm that had 2 ve tables , i then got another pcm that had one ve table was told bye someone in here that that was why i was having issues with it idling and dying, it has gotten alot better, i dont like the shape the ve is in my self but its asking for how it is, it has a tbss intake, a stock throttle body , it is bored to a 5.7liter, it has a stage 2 sloppy cam, 34.6 psi injectors. im trying to do this. so im not gonna smoth it . its getting close to 2% in most cells. there is a couple cells that being a bare to get inline. im trying here. plan is to change out the heads to these 243 im having done by the mashine shop. and get better injectors with the right injector data. just have to make it to then. work takes its sweet time to give us what is owed to us. and i dont have the heads back from the shop. i need to just tear it apart and stop driving it. but man it does run pretty good. most of the time. i dont know.............................................. ....................I MEANT TO SAY TURN FROM RED TO LIGHT BLUE......IS THIS RIGHT ,IN THE VE TURNING,,,,,?

[mychevyisntheavy]

this is what a tuning tables look like , there was red all in this i changed them to the blue is this right? wont let me post a pic of my tuning.

[mychevyisntheavy]

do u guys think im ready to move to the maf now

[gtstorey]

Are your fuel trims consistently 3-5% or less?

[mychevyisntheavy]

here is the latest logging can you tell me ?

[dhoagland]

here is the latest logging can you tell me ?

Not sure if you have been tuning to Wideband or Using Fuel trims.
Left is AFR Error from wideband... Right is AFR Error from Fuel Trims....
WB_LTST.jpg

[mychevyisntheavy]

Not sure if you have been tuning to Wideband or Using Fuel trims.
Left is AFR Error from wideband... Right is AFR Error from Fuel Trims....
WB_LTST.jpg

i have been using the afr error. i do have the ltft&stft eror table also. which shouild i use?

[horsepowerguru427]

i have been using the afr error. i do have the ltft&stft eror table also. which shouild i use?

If youre going to use fuel trims for driving after its tuned, then tune it on fuel trims (in the areas that allow) and get WOT and PE areas with the Wideband. Just blend the two together by hand basically.

[dhoagland]

If youre going to use fuel trims for driving after its tuned, then tune it on fuel trims (in the areas that allow) and get WOT and PE areas with the Wideband. Just blend the two together by hand basically.

I like this.. I know some prefer Open Loop wideband some don't.
The log these pictures were taken from only had 1 very quick blip into PE so its a good useful log to use fuel trims...

I can help you make 2 graphs for this. One that only logs commanded AFR above 14, one that only logs Commanded under 14