LM-1 Wide band today!

[lintlars]

Just got my LM-1 today and this thing is awsome! I made a few pulls and checked out the data on my home comp. I have a few questions for anyone that has used this . I have the LM-1 with the RPM convertor and inductive pick up. And I have the ability to modify the fuel mixture via fuel comp. and lexus screw


Question#1 What should my afr be at idle im at 14.5ish area right now

Question #2 When I let off my AFR goes nuts (lean)
I was told this is normal how lean is it actually going and does this hurt the engine?

Question#3 At WOT under load my AFR is in the 9ish where should I be to be safe I know this is alot rich

Question #4 The RPM data is a bit sketchy when I got it back to my home comp I can smooth it out with the software but is this because Im using the inductive pick ? Would it be better if I hard wired this RPM pick up ,if so where do I wire it into?

Thanks

 

[ma71supraturbo]

14.7:1 is stoch, that's what is textbook "ideal" at idle. 14.5 is fine.

You should go full lean when you let off the gas. If you are in gear, the engine will stop supplying fuel to the engine until it gets to a certain rpm (feels like ~ 1000rpm to me, but thats just a guess). That means all the O2 sensor will see is air.


~12.0:1 is optimal for power, but 11.0-11.5:1 is more safe (in the event of a fuel hicup etc)