DIYWB help!

[tjh566]

When data loging tweecer is seeing 10.00 AFR flat at WOT, my gauge is reading 11.3-11.9, I lean it out some and my gauge shows the change but in tweecer its still 10.00 flat, I wanna know what to do, cus i dont wanna keep leaning it out for the value in tweecer and damge my engine, cus im already at the point (on my gauge) where I dont wanna go any leaner.

 

[tjh566]

switch the settings to the AEM one on calcon and now it reads like 9.8 but the gauge is still reading around 11.5, was on the DIYWB setting on calcon. need to know which to tune by or if i have a setting wrong or what??

 

[m0l0]

You have to edit your wideband Database according to the voltage vs. AFR , for example for the LC-1 i used as base the INNOVATE.DB located on the installation directory "C:\Program Files\STKR 1.30A\Data" as a base and used the sensor "Warming Voltage" as a reference. You have to doit with excel, or in the best case if you have EA you can doit there. , and save it as DBF version IV. I will post my table if it´s useful to you:

VOLTS AF
0.000 7.350
0.117 7.700
0.233 8.052
0.350 8.403
0.467 8.754
0.583 9.105
0.700 9.456
0.817 9.806
0.933 10.157
1.050 10.508
1.167 10.859
1.283 11.210
1.400 11.561
1.517 11.912
1.633 12.263
1.750 12.614
1.867 12.965
1.983 13.316
2.100 13.667
2.217 14.018
2.333 14.369
2.450 14.720
2.567 15.071
2.683 15.421
2.800 15.772
2.917 16.123
3.033 16.474
3.150 16.825
3.200 17.176
3.325 17.527
3.500 17.878
3.617 18.229
3.733 18.580
3.850 18.931
3.970 19.282
4.083 19.633
4.200 19.983
4.317 20.335
4.433 20.686
4.500 21.036
4.667 21.387
4.783 21.738
4.900 22.089
5.000 22.390


Its not that complicated but a little time consuming and in most cases it will be diferent since your wiring will have some diference in the resistance. so its always better to fine tune this table to your readings.

 

[final5-0]

Let me raise a red flag of caution right here and now

I want to stress
You're in an area here where you really want to ............
keep your head clear
AND
if you have ANY doubts ANY doubts at all

Make small changes ... and ... verify with datalogging

m0l0 ... did you not find you had issues A F T E R you had
leaned back your curve ... a good bit

It might behoove you to put your curve back to stock
and start from fresh

Usually, your factory curve is not gonna be all that far off

Also, I wanna point out another important issue with these WB's

Peeps in the past have had issues of inaccuracy when
working dual outputs

Or in other words ... Having their digital display working
simultaneously with their analog output feeding the
Tweecer interface.

I noticed a slight difference with my OLD FJO wb
sooooo
The digital display has been discoed now for a couple of years

No biggie as its just a bunch of numbers jumpin around

anyway ... go over to the .org site and you'll find lots
of info about this dual display hosed reading issue.

Just a friendly heads up for ya

Grady

 

[tjh566]

Thanks, Looking at the files this appears to be the problem! When I did this I kinda thought how does it know afr, then I just though all of them were the same or something, found the real numbers for my setup, gonna test it out in a few!

 

[m0l0]

Just a friendly heads up for ya

Grady

Yep maybe there are some cases you will have some diferent numbers across the use on dual ouputs , but however in my case since i am not working with dual output feed just a single output , i use the serial output (gauge calcons reading from th EVP and direct serial connection to the LC-1 , so whatever i check first is the direct feed from the LC-1 and then the calcon reading , now i have a correctly calibrated AFR vs. volt on my DB wideband setup. and yes i had some problems on the past but as you stated my WB needed a recalibration and now is reading pretty much accurate , also you are right the stock MAF transfer curve was not that off from the original 10% more rich aprox.

 

[final5-0]

Yep maybe there are some cases you will have some diferent numbers across the use on dual ouputs , but however in my case since i am not working with dual output feed just a single output , i use the serial output (gauge calcons reading from th EVP and direct serial connection to the LC-1 , so whatever i check first is the direct feed from the LC-1 and then the calcon reading , now i have a correctly calibrated AFR vs. volt on my DB wideband setup. and yes i had some problems on the past but as you stated my WB needed a recalibration and now is reading pretty much accurate , also you are right the stock MAF transfer curve was not that off from the original 10% more rich aprox.

I had no idea whatsoever what could be driving those values
to a reading of 7 to 1

I just knew you could not REALLY be as fat as that

With something that fat in place

You could watch the gas gauge fall as the tach climbs

Grady

 

[tjh566]

works now, it was the file, needed my numbers thanks guys! helpful as always

 

[m0l0]

I had no idea whatsoever what could be driving those values
to a reading of 7 to 1

I just knew you could not REALLY be as fat as that

With something that fat in place

You could watch the gas gauge fall as the tach climbs

Grady

Lol Yes indeed!

works now, it was the file, needed my numbers thanks guys! helpful as always

good to hear that