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Old 09-21-2012, 11:49 PM   #288
Registered User
Join Date: Mar 2008
Location: Northern CA
Posts: 172
My Ride: '02 330Ci
I have tested all sorts of o2 "sims" and it comes down to what the DME is looking for. The .650 volts that 99% of most o2 sims produce works on most cars that just look for good operating cat voltage. But when you let off on the gas and go into fuel cut our cars look for the lean signal and how long it took to get it. What is this $40 o2 simulator, tell me more about it. You say it is just a resistor wired to the DME harness, that sounds pretty vague. I have used the LC-1 on a 135i with great results, I don't see how your o2 "sim" worked on that car. I am going to need to see more information before I believe this claim. For $40 I'll buy my own and test it out.
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