LM1 info

[Chris E.]

I hear about them being mentioned every once in a while. Could someone who has experience with one of these give me a quick low down on it's uses. Does it require an oxygen sensor bung in the exhaust? Will it help in dialing in my idf's? Somewhere local to purchase? Any info would be helpful.

Thanks, Chris

[silas]

i dont have any personal experience, but i know quite a few of the people here on the forum use them. i'm sure someone with more experience will chime in.

but i can tell you that yes it requires an o2 sensor bung and o2 sensor. yes it will help you dial in your idf's as well as constantly monitor your a/f ratio. pretty sure there are options for other inputs aswell (rpm, shift change, knock sensor, etc). not sure where to purchase locally....lordco maybe?

it'll probably be the best money you'll ever spend. precise tuning ability at your finger tips while you've got the car idling in the garage or under load on the road!

[owdlvr]

The big advantage to the LM1 is it's accuracy.

A 'normal' O2 sensor sends rich-to-lean readings by sending information to your gauge via a change between 0 and 1 volt, it's considered a 'narrow band' of information, and thus not very accurate. Think of a regular "on-off" light switch, and you're close to how they work. It's Lean...rich...lean...rich...etc.

 By contrast, the LM1 sensor is a 'wide band' sensor which reads and sends data across a change from 0-5 volts. Remember, it's sending the exact same data (how lean, or how rich) but now we have five times the space to send the data. Thus, we can be five times more accurate then a narrow band sensor.

You will need to install an O2 sensor bung into your exhaust, and the supplied wide-band sensor that comes with the LM1 kit. You can certainly use it to help tune the idf's, but you would certainly want to understand how to tune via the air-fuel ratio.

HTH,

-Dave