WB_AFR_b2                , {}                                , 0x381114,  2,  0x0000, {}     , 0, 0,         0.0112338149664641,	-9.9154, {WB_AFR_b2}
WB_Lambda_b2             , {}                                , 0x381114,  2,  0x0000, {}        , 0, 0,         0.000774745,	-0.68382, {WB_Lambda_b2}

;; Spartan I received seems to be defective. I measured 4.400V (averaged) at open air and 2.05V (averaged) at 14.7AFR and 0.053469 (averaged) 
;; at 10.00 AFR. It should give 5V at open air and zero at no air.
;;
;; Measured values with voltmeter when connected to ECU (when not connected to ECU it ouputs full 0-5v range - Spartan has some design flaw):
;; 
;; Sartan		ECU		Physical AFR
;; 0.005		0.053469	10 (bag with propane)
;; ~2.05		14.7 		(running engine with 1.00 lambda)
;; 5.000		4.400		20 (open air or decel)
;; 
;; 
;; 
;; Curve finder (that's a software you can get for free to find fits for you data).
;; Used 10.00 and 20.00 AFR points as 0.00 and 10.00 respectively with their voltages (voltages obtained empirically by averaging across hundreds of cells):
;;
;; 0.053469	0
;; 2.050	4.7
;; 4.400	10
;; 
;; Got linear equation: y = a + bx   ->   y = -0.0846 + 2.299 * x
;; 
;; Calculated 4.7 AFR: 2.08V    (due to the software doing the best to fit not so linear curve, there is a little bit of deviation but nothing significant)
;;
;; Good enough!!!
;;
;; Me7 Logger:
;; Spartan is gimped in that it only measures from 0.053469 to 4.400 so it really provides 4.400 - 0.005346953 = 4.394653047V range. 
;;
;;
;; Verify that CurveFinder equation makes sense for 0, 4.7 and 10 AFR (before offset):
;; y = -0.0846 + 2.299 * 0.053469 = 0.03AFR  - almost zero
;; y = -0.0846 + 2.299 * 2.050    = 4.63     - close enough, it osciallates a lot anyway when idling
;; y = -0.0846 + 2.299 * 4.400    = 10.031   - spot on
;;
;; Verification complete and the equation is a pretty good fit considering empirical nature of arriving at it.
;;
;; We can obtain ME7 factor in two ways... determining divider which will define ratio of nominal 5V to narrower voltage ECU sees which is 4.394653047V or 
;; using the function's 2.29 * x factor, they should be equivalent...
;; O2 volt variable holds 1024 discrete values for 0-5v voltage level. Since O2 WB measures 10AFR difference in that range, then 10/1024= 0.009765625 
;; for one 1 unit in variable. That's stock but you need this to understand where the 1024 comes from.
;;
;; 10 / (1024 / (5V/4.394653047V)) = 0.0112338149664641
;; 10 / (1024 / (2.29V/2V))        = 0.011181640625
;;
;; There is 0.46% (one is 1.0046 larger than the other) difference between the two, you can use either one without much difference in output. 
;; At 12AFR the error between the two will be 0.01 (one hundreth!) AFR and we usually measure well below 12AFR anyway so actual AFR error will be even smaller.
;;
;; Grand finale!!!
;;
;; ME7Logger values for 0x381114/0x381116 for POS Spartan O2 meter:
;;   AFR
;;     Offset: 		10 - 0.0846 = 9.9154
;;     Factor:		0.0112338149664641
;;     Final Values:	0.0112338149664641,	-9.9154
;;   Lambda:
;;     Offset: 		9.9154/14.5 = -0.68382
;;     Factor:		0.0112338149664641 / 14.5 = 0.000774745
;;     Final Values:	0.000774745,	-0.68382

WB_AFR_b2                , {}                                , 0x381114,  2,  0x0000, {}     , 0, 0,         0.0112338149664641,	-9.9154, {WB_AFR_b2}
WB_Lambda_b2             , {}                                , 0x381114,  2,  0x0000, {}        , 0, 0,         0.000774745,	-0.68382, {WB_Lambda_b2}
WB_Volt_b2               , {}                                , 0x381114,  2,  0x0000, {V}       , 0, 0,         0.004883,      0, {WB_Volt_b2}