New tuner need help with PID's

[jmsmotorsport]

Thanks mate that puts it all into perspective, I know how engines work etc but this is all new to me and something I am keen to learn. I will upload another log tomorrow, I feel happy with where it is at across the board. Only issue I am having is from 0 tps to WOT it goes lean and knocks and pulls timing but when it hits around 1800rpm it settles down and is fine, I'm also having a issue with in gear if I give it a blip of throttle moving off it will stall.

[jmsmotorsport]

With EQR while looking at a log am I trying to keep this at 1 at all times?

[joecar]

With EQR while looking at a log am I trying to keep this at 1 at all times?

During CL, commanded EQR is 1, and wideband will show Lambda 1 (see note below) if airmass model is correct.

During PE, commanded EQR is from PE table, e.g. EQR 1.175 for NA (regardless of fuel being run), and wideband will show Lambda 1/1.175 if airmass model is correct.



note: lambda and EQR are related by this: Lambda = 1/EQR.

Also note: make a distinction between commanded EQR (or Lambda) and measured Lambda (or EQR)...

i.e. commanded EQR = 1/(commaned Lambda), and measured Lambda = 1/(measured EQR).

[joecar]

With EQR while looking at a log am I trying to keep this at 1 at all times?

The correction multiplier is:

commanded EQR * measured Lambda


this has been named the "BEN"


you want to keep BEN at 1 at all times.

[jmsmotorsport]

Thanks a lot joe, I would love to have half the knowledge you do. I can't help but notice the Aussie flag as your avatar, are you in Aus or the U.S.

[joecar]

BEN (correction multiplier) is any of these (they are all identical):

commanded EQR * measured Lambda

commanded EQR / measured EQR

measured Lambda / commanded Lambda

1/(commanded Lambda * measured EQR)


With V2 serial comms supported wideband, we use this: GM.EQIVRATIO * EXT.WO2LAM1

[jmsmotorsport]

Here is a copy of my latest log and the tune with the ve and maf corrected off the log. let me know what you think, and any advice on what to do next if any. Thanks alot

[joecar]

Here is a copy of my latest log and the tune with the ve and maf corrected off the log. let me know what you think, and any advice on what to do next if any. Thanks alot

This log is quite good...

GM.DYNCYLAIR_DMA, GM.CYLAIR, CALC.CYLAIR all overlap/track each other very closely (VE and MAF are in agreement);

LTFTBEN during CL is close to 1;

WO2BEN during OL is so close to 1;

MAF ranges all the way up (MAF is clean, plumbing is free);

DAT moves closer to IAT over time during increased throttle, and moves closer to ECT over time during reduced throttle;

zero knock at significant load (I know the KS work because I see a sprious know event in the log);



I would set PE B3618 to 1.175-1.185 all across.

Make sure to set D0930-2 below D0915-7.

Set D0960-2 to 100% all across.

[jmsmotorsport]

Thanks joe car is going very well, quite happy I am going to move my wo2 into the extractors tomorrow and get it smoothed out even closer. Are you able to look at my other post regarding the strange thing happening with my idle issue.
When talking D0930 - 2 is that tables D0930, D0931 & D0932?

[jmsmotorsport]

Joe what would cause the car to have 3 degrees of Knock present and even when I go back to cruise it seems to be stuck at 3? You say the log looks good but I wouldn't have thought my VE map would be so spikey and uneven, can you explain this to me? If I wanted to go to a MAFless tune would I just use the Auto VE process?