How to tune LTrims using LS1 Edit ???
Re: How to tune LTrims using LS1 Edit ??? Chris, some good information. Thanks for the instuctions you posted on the Pivot Table and thanks for the sample spread sheet. <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" />
Both helped out when I was screwing around trying to get my data lined up.
A few quesitons:
1. I did a 24 minute log and had a some normal driving. A few WOT runs but mostly just normal driving (cruising). Is this what you did?
2. Do you know if idle LTFT at idle have any significance on WOT or part idle performance?
Eric
Both helped out when I was screwing around trying to get my data lined up.
A few quesitons:
1. I did a 24 minute log and had a some normal driving. A few WOT runs but mostly just normal driving (cruising). Is this what you did?
2. Do you know if idle LTFT at idle have any significance on WOT or part idle performance?
Eric
Re: How to tune LTrims using LS1 Edit ??? A few other things:
In your spreadsheet on the "Source Data" worksheet on line 344 I believe you got some data offset by your logging program.
You have a MAF freq of 0.77.
Using my data my R^2 value was 0.9994 using a 5th order poly fit.
However, my MAF freq adjustments for the MAF freq. 1500 - 2375 are WAY off. I believe that is due to the fact that I didn't have any data below that range for me to log. So my equation actually starts back up at the begining. I will have to post a picture in a few minutes. Anyway, I am going to leave the low frequencies alone for right now and see what happens. Just some FYI here from everyone reading.
ERic
In your spreadsheet on the "Source Data" worksheet on line 344 I believe you got some data offset by your logging program.
You have a MAF freq of 0.77.
Using my data my R^2 value was 0.9994 using a 5th order poly fit.
However, my MAF freq adjustments for the MAF freq. 1500 - 2375 are WAY off. I believe that is due to the fact that I didn't have any data below that range for me to log. So my equation actually starts back up at the begining. I will have to post a picture in a few minutes. Anyway, I am going to leave the low frequencies alone for right now and see what happens. Just some FYI here from everyone reading.
ERic
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From: College Station, Tx
Re: How to tune LTrims using LS1 Edit ??? Thanks for the tip on the sig figures in excel - that greatly simplifies things!
In regards to the curve fitting - yep, it would help to have data points at the lower values - but you still will probably need to play with the order of the fit (since you will not have data for the full range) - what order your fit is will make a large difference in the behaviour of the graph past the min and max of your logged data.
Chris
In regards to the curve fitting - yep, it would help to have data points at the lower values - but you still will probably need to play with the order of the fit (since you will not have data for the full range) - what order your fit is will make a large difference in the behaviour of the graph past the min and max of your logged data.
Chris
