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Old 12-02-2008, 01:38 AM
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300EVIL 300EVIL is offline
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Join Date: Apr 2000
Location: Lake Geneva, WI.
Posts: 1,676
Originally Posted by duxthe1 View Post
I think the big thing ECUs validate is whether the O2 signal oscillates and the time from peak to peak. The controller will track the oscillations and mimic them. Part of the "beta testing" will be determining how far from 50% I can deviate the signal before the ECU calls shennanigans. The CIS cars can get away with a pretty poor tune and don't set C/E lights easily. Hopefully I can run it right to the edge of the chart and not "off the charts" so to speak. The neat thing about having the LEDs display the Lambda is that it will let me know when the O2 signal is called out for a fault with a fixed 50%.

I'll keep you guys posted with progress. Right now I'm waiting 5-10 days on a delivery of components, which is torture since I've spent the last several weeks getting the code written and debugged.
Sounds pretty good to me! You've obviously done your research. I can't wait to see your results. If everything turns out okay; I am an expert in board development!

My prototype...

My final product....

Let me know if you need any help in this area....

Current Stable:
01 ML55 AMG
92 500E (a few mods)
87 300E (lots of mods)
00 Chevy 3500HD Diesel Box Truck
68 18' Donzi Marine
06 GT i-Drive7 1.0 Mountain Bike (with GPS!)

PREVIOUSLY OWNED:83 300SD, 87 420SEL, 88 420SEL, 90 420SEL, 86 560SEL, 86 190E 2.3-16V AMG, 94 E320

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