SPRAYED 01

iTrader: (22)

Followed the Greg Banish dvd to set up lambda and I cant figure out why it still reads unsupported when I connect to the car. It will display lambda from my aem wideband in the table but on the lambda histogram it displays the number but has no memory, just shows a black box after it leaves that cell. Lambda error and commanded lambda are unsupported and histo does not work.

I have afr high res displaying. Id like to attach the config file but it says invalid. Some help with that would be greatly appreciated.

Command lambda is [PID.6001]/14.3

Lambda error is [AUX.20121]/[USER.9004]

Thanks
Alex

1970camaroRS

iTrader: (8)

It should be 100*(AUX.20121-USER.9006)/USER.9006 as long as 9006 is commanded lambda. So, in your case it should be 100*(AUX.20121-USER.9004)/USER.9004.

SPRAYED 01

iTrader: (22)

Ok I will give it a try tomorrow. Thats basically what I had when I was doing afr. Did I follow the dvd right? I could swear he does not imput that formula like that. Ill have to watch it again. Thanks for the replies though

1970camaroRS

iTrader: (8)

Problem is with [AUX.20121]/[USER.9004] you're asking the scanner to solve for wideband/commanded and you'll just end up with an inverse decimal for your answer. That doesn't help. You're looking for a percentage of error. You get that by subtracting commanded from actual lambda (difference), dividing it by commanded again(error percentage in decimal) and then multiplying the whole thing by 100 to end up with a whole number. Make the units % and you're set.

SPRAYED 01

iTrader: (22)

Ok so I got almost everything working. I put in the formula that 1970camarors posted. I had to change the aux to 20122 as that was my new wideband. I get an lambda error now but it reads -93.x. It should be a percentage right?


EDIT:I didnt put it in %. Ill try that now.

SPRAYED 01

iTrader: (22)

Ok ya number stays the same. Im assuming when its reads -93.0 that its off by 7% right? Can I get it to read like that?

turbolx

It would appear that Nathan didn't watch the DVD. Or if he did, he wasn't paying atterntion before he came back here to give advice.

The formulas used on my DVD are correct. They do NOT deliver error as a 0-100% number. They deliver a correction factor that can be multiplied directly by your MAF or VE numbers to go straight to the new (corrected) number that you need for the car to run properly. It's actually less math and more precise this way.

Any time you see "unsupported parameter", it means you're not recording a variable required for the calculation or you are referencing an empty input parameter. Fix that and everything should fall into place as you saw on the DVD.

1970camaroRS

iTrader: (8)

You forgot the brackets in the equation: 100*(wideband-commanded)/commanded.

Without the brackets, the equation spits out -93 when it should be -7. Once you have a histogram full of numbers, filter out the ones you don't want to use, highlight the rest, copy, then go to HP Tuners VE table and right click, paste special and "multiply by %". It's that simple. Do "multiply by % half" to sneak up on small errors.

1970camaroRS

iTrader: (8)

I haven't wasted any money on any how-to DVDs or books. I learned by interacting with the tuning community and trial and error. The method I pointed out is very common and works very well.

LilJayV10

iTrader: (39)

Greg,

I sent you a PM.

SPRAYED 01

iTrader: (22)

Just wanted to update. I corrected the formula to use aux.20122/user.9006 and it works perfectly now. Reason it didnt work before was my aux 20121 and user.9004 were from my old afr config. Now I can just use the number that comes up in lambda error and multiply it by the number in the ve cell I working on.

Thanks for all the help guys. Now on to Banish dvd number 2.

turbolx

I have to say "I told you so", but...

Glad to see you got it sorted out. Isn't it nice having it just work out correctly using simple math? No need to resort to internet village wisdom just yet.

SPRAYED 01

iTrader: (22)

Haha yes I have to say it is nice. Im pretty much done with driveability tuning. Im just going to live with the fact that I can get ve perfect in open loop but as soon as I put it back into closed at idle only it reads 1.06 lambda. Stft are within 3% so I think its just the difference in what my old narrow bands think is lambda 1 and what the wideband thinks. Off idle and everywhere else lambda is 1 driving around.

I have the wot tuning done also but Im going to turn the meth kit on so I will have to start pulling out some fuel.

Thanks again for the help and look forward to your 2nd dvd. Any chance you will do a live seminar in Chicago or close by in the future?