logging wideband issues

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Originally Posted by Kx1984

what scaling did u use for the lc1?

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Whatever it says in the book. I can't recall off the top of my head, it was like 0v = 7.5 and 5v = 22.1

Quote:

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Originally Posted by Roybatty

My o2s get stuck sometimes, when cold/warming up. Eventually start cycling.

Wide band starts rich ~12.5. After car goes to closed loop, generally stays on my settings.

Any break in exhaust prior to wb sensor will affect reading.

Never seen negative reading.

Revel in your time

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I don't KNOW that I have a break of any kind. The exhaust doesn't leak anywhere under the car but I definitely have one in the engine bay and it looks like its from the flange on the manifold.

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Originally Posted by Greg E

The car is supposed to do this. There is a delay time after the car is started before the ECU goes into closed loop.

The AFRs are supposed to go rich during initial start. Then about. 15 seconds later (or whatever you set the post start closed loop enable timer to) the ECU will start to cycle the narrow bands.

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I understand that but I let it idle for like 10 minutes and logged the whole thing. The afrs slowly crept up until about 20.1 then stabilized there. With the short term being negative that means the ecu is pulling fuel, but with such a lean afr at idle, it doesn't make sense. That's what's confusing me. Nothing is agreeing with each other. Wide and says lean and narrowband says rich.

Fix your flange leak. :p

Lol you come pull the engine then! Do you think that's the cause of all my problems?

Yes definitely!

Hmmm... Road trip to Kentucky. :chin:

I would love to have you, and I would love to knock it all out in a weekend, but I need my life to slow down a bit lol. School + a lot of work makes me super stressed!

If you are really considering coming down we have a room you could have all to yourself, and you are more than welcome! Lexington has a great bar scene as well ;)

Haha, trade you school and life for working a 45-50 hour job, plus an hour a day at the gym, plus writing code, plus answering questions about it, plus turning wrenches on cars, plus dealing with Brett and Adam, plus maintaining a little something that resembles a social life, plus a little sleep.

Kinda funny but my "real" full time job is actually the most relaxing part of my day. :)

Hahaha I can't argue with that. The answering questions part is one thing you do well that is quite impressive. Your code writing however... Lol kidding!!

Well my offer still stands. If you wanna ask off a Friday and drive down I can show you a good time, on me!







No homo.

It takes me forever to write code simply because I like to very thoroughly test it before putting it out there to the public. The current hang up is I sold my 98 VR4 this lost my test/development car. The new 99 is in too many pieces. :(

I'm relying solely on Adam right now to test code and between the two of us, we are lucky to speak an hour every few days. So development has been slow.

Fortunately all the switchable map stuff is ready. Just the 3D boost control maps and new custom output pin coding need some touch up.

If i know 2+ weeks in advance i can request a friday or saturday off and come over and help. Im over in LaGrange so not that far from Lexington.

3d boost maps? Im going to have to find time to put my stock ecu back in so i can send my SL ecu off to be converted to a full 99 VR4 ecu.

The yellow wire on the lc-1 is the narrowband output. Shouldn't you be using the brown for 0-5v ecu input?