Just wondering, looks pretty good and I'm about to try it out.

One thing I can't understand is the new value (After PE-RPM). I know that's the new value for your table, but is it the ACTUAL value, or would you have to add it to it? For Example:

If I get a value of -5.50....and my PCM Table value is 10.0, do I add the -5.50 to get the final value of 4.50, or is the table value suppose to be -5.50???

Can there be negative numbers that high in the table?

TIA!

 

Hey Paul, what's up? Do you have a link to that spreadsheet? Is it something that anyone can use? Thanks.

 

Steve? Yeah, it's pretty straight foward and is used in conjunction with Tunercat/LT1 Edit.

You can find it on our website @ http://www.nwof-bodies.com/downloads.html

Anyone know the answer to my question?

 

Nope, its Joe, I picked up that y-pipe from your house last summer. Thanks for the link, sorry I can't answer your question though.

 

Have you searched the LT1Edit archive? I think Christian Millard has posted several items about the dynotuning Excel file...

I'll look and see if I can come up with something for you.

You bring up a valid point and an excellent question though. Do you add the value returned to the tables or replace what's there with the new value?

EDIT: From Christian's posts on it, it appears that you add the values to the table.

So if you've got 8 there now, and you get a -5.5 from the worksheet, you're new value would be 2.5

 

Thanks

I can't wait to dynotune my own car

 

It works.. but you have to do it in a few tries.. simple math really but it aids in doing it faster I modified it and got better results.

 

Yes for us 93s the PE Table ranges are a bit different so I already modified it.

In what way did you modifiy it for improvement???

 

That i used percent difference instead of actual percentage and I get a bit closer faster.

 

Dont understand.

One thing I thought about doing is using the average value of a group of cells from the sheet instead of one. For example:

Your tables Look like this:[code]
2000
2400
2800
3200
3600
4000
4400
4800
5200
5600
6200
6600
7000

Now instead of inputing the value off the sheet from 2000, take the average value from the sheet of the cells from 2000, 2100, 2200, & 2300. Input that number into that 2000 Table cell.

So if your sheet calculated the numbers:
2000: 8.2
2100: 7.4
2200: 6.5
2300: 4.5

The average number you'd find is 6.6
The reason I thought about using this method is because the LT1 Tables are in intervals of 400 rpm, so inputing the value for anything in between is impossible and if you have a big increase/decrease in percentage in the middle of one of those intervals then you really can't do anything about it except thise averaging method.

I have not tried this yet, but it seems logical. So I'll let you know how it goes.

 

Its not logical because the machine interpolates... all you will do is make a crazy curve...

but let us know how it goes be sure to have a wideband present...

 

Yeah, maybe you're right...

Haven't thought about it alot, but I'll try it atleast once.

 

The Highlander is right.

You enter the value at the corresponding RPM point, and the PCM will interpolate the values between on its own.

So like he said, you make a crazy curve and the PCM smooths it out and connects the dots for you.

 

Ok, it's making more sense

So Highlander how accurate is the spreadsheet?