Auto Tune

[BowlingSS]

There are a couple of key things that are needed to do the Auto Tune, from my perspective.

1) You need to be MAFless - running in Speed Density mode
2) You need to have a Wide Band O2 sensor - basically so that you can compare commanded vs. actual AFR's
3) I'm sure this is dumbed down, but basically what the Auto Tune process is doing is looking at the commanded vs. actual AFR's and calculating the difference (factor) between the two. So that, for example, in cell 4000RPM x 55kPa your factor could be 1.10, which would mean that you are over fuelling by 10% at that specific point.

In EFILive there is a MAP that calculates all these factors for you, and allows you to paste back into the tuning tool using these factors to correct your VE table. Prior to this being available within the EFILive product it was being done in Excel Spreadsheets, so ultimately you still have that option available irrespective of the tuning tool you use.

All you would need to be able to do is build two tables, one for commanded AFR's and one for actual. Then compare the two to see how far out your actual AFR's are.

Hope that makes some sense, or if I am wrong, please flame me...

Hopefully you will have your 98 support soon anyway... Paul and Ross are working hard on this as we speak!

Cheers,

I just set C2901 to 0 to disable the MAF. Is that OK?

Bill

[Tordne]

I just set C2901 to 0 to disable the MAF. Is that OK?

Bill

That should definitely do it .

[Blacky]

can I work this auto ve and maf magic with just efilive V7 and then export results to hand enter into my "other" tuning product????

Yes, you can, I think you could even just copy/paste data between EFILive and HPT.
There is a small problem of the tables begin transposed, so you'll need an extra step via Excel to transpose the data prior to pasting it into HPT.

To transpose a block of data In Excel, highligh the block in Excel, copy it, then select a blank cell and select "paste special" , check the "Transpose" check box.

Paul

[Black02SS]

can I work this auto ve and maf magic with just efilive V7 and then export results to hand enter into my "other" tuning product????

Yes, you can, I think you could even just copy/paste data between EFILive and HPT.
There is a small problem of the tables begin transposed, so you'll need an extra step via Excel to transpose the data prior to pasting it into HPT.

To transpose a block of data In Excel, highligh the block in Excel, copy it, then select a blank cell and select "paste special" , check the "Transpose" check box.

Paul

Negative, if you set it up correctly, there is no need for excel... I have done it several times with no errors...

[Blackbird]

sweeeeet

thanks for the info everyone.

now to go hookup the WB to the AC switch so I can get crackin

[Black02SS]

Why are you using the AC switch?

[TAQuickness]

I think he ment the AC coolant pressure input. It's one of the 2 0-5v inputs to the PCM.

Not a bad idea if you can live without AC.

[Black02SS]

Ok, but why? Whats the point? If you are tunign with EFI live, then you will have the interface cable with the connection, not needing to use the ac for a input. I did that before I had live when I was using Edit.

[Dirk Diggler]

Ok, but why? Whats the point? If you are tunign with EFI live, then you will have the interface cable with the connection, not needing to use the ac for a input. I did that before I had live when I was using Edit.

He doesnt have the cable with the inputs. He has an old Atap/bi directional cable

[Black02SS]

Thanks for the input. I was assuming he was runing FlashScan and didn't need it. I'll go back to my hole now..