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Old 12-01-2008, 01:40 PM
duxthe1 duxthe1 is offline
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Join Date: Oct 2004
Posts: 3,278
No wide band, it's using the factory sensor. The range of adjustment is only 30% lambda either way. It doesn't affect the EHA directly. It only changes the O2 signal enough that the CIS-E will make the fuel adjustments automaticly. The management does have to be in closed loop before the controller can adjust it.

I didn't do a digital readout for 2 reasons. 1. The lambda signal is constantly moving so tracking it down to the milivolt would just keep a fluctuating readout. The 10 LED readout acts as a buffering interface. If the lambda is in the 50% range the 50% LED will be lit. I don't see the need read out the lambda within a closer tolerance. A 10% discrepancy in actual Lambda would just barely be within the range of being able to notice a difference from behind the wheel. 2. Keeping it simple. A digital readout would add to the complexity and after 1793 lines of code in Assembler, I'm not looking for more complicated.

Thanks for the input, though. All ideas are welcome. I hope to be able to develop it to the point of having a good product that will perform well in the field.
90 300TE 4-M

Turbo 103, T3/T04E 50 trim
T04B cover .60 AR
Stage 3 turbine .63 AR
A2W I/C, 40 LB/HR
MS2E, 60-2 Direct Coil Control
3" Exh, AEM W/B O2
Underdrive Alt. and P/S Pulleys,
Vented Rear Discs, .034 Booster.
3.07 diffs 1st Gear Start

90 300CE 104.980
Milled & ported head, 10.3:1 compression
197 intake cam w/20 advancer
4 ignition advance
PCS TCM2000, built 722.6
600W networked suction fan
Sportline sway bars
V8 rear subframe, Quaife ATB 3.06 diff
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