COS help?

[yzriders182]

Riebel 2003 5_0001.tun This is my current tune too.

Thanks for any help!!!

[joecar]

Ok I have all the proper injector data, cos3 installed and bugs worked out.

Im now trying to tune it and starting at idle. My wideband 02 is reading that at idle it is running lean (jumping between 15-17 afr) would I use table B3647 to make this adjustment? shouldn't it adjust automatically if it is set to 14.68?

Thanks for the help. Here is a pic of my B3647 table.

If you're running SD (MAF is failed with MAF DTC present): correct the VE table.

If you're running MAF (VE is disabled from B0120 set to 400 or less): correct the MAF table.


Do not set the high MAP columns of B3647 to stoich unless PE enables (and PE is set suitably rich)... at significant load you want to be suitably rich to avoid engine damage.

[joecar]

Would you be willing to set your tunetool fueling units to EQR or Lambda rather than AFR...?

Would you be willing to use GM.EQIVRATIO and wideband Lambda for correcting the VE/MAF tables...?

Do you have FlashScan V1 or V2...?

Which wideband do you have...?

[joecar]

In your tune file, fix these out-of-range values:
A0001
A0002
A0012
A0013

To fix OOR: set those cells to max-1, save file, exit tunetool, start tunetool, enter max in those cells, save file (note this is important).

[joecar]

In your tune file, B3647/B3649 are dangerously lean in the high MAP columns...

it seems your tunetool has fueling units set to Lambda... go Edit->Properties and set fueling units to EQR, restart tunetool, and fix B3647/B3649.

[joecar]

Your IFR is set to 71.65 g/s... wrong units...

go Edit->Configure Display Units, find B4001, set the Data units to Imperial (lb/hr), exit, restart tunetool, fix B4001.

[joecar]

Check B0701, B0504, B1301... if you don't have those systems then disable them.

[joecar]

Set PE Enable B3616 to same as 2002 Camaro (65% below 3200 rpm, 35% above 3200 rpm).

[joecar]

BTW: shift points are easier to figure out if you set D0960,1,2 to 100% everywhere.

[joecar]

BTW:

WOT upshift and downshift MPH values are too close (and make sure to keep each upshift above its corresponding downshift).

Set shift times to 0.3 seconds.