[curley8788]

i just picked up an LM-1 air/fuel ratio kit. i found an OLD laptop in my garage and it has a power cord, cd drive and an operating system! i fired it up and loaded on the software. everything seems to be good to go. once i get the fuel line in the car i will be tuning the motor myself. i thought it was a good idea because it was a bit cheaper than a dyno tuning day at the local shop and i can always use this on my buddies' cars for a small fee im thinking of charging like 40 bucks to record and analyze their air/fuel ratio. i might get an RPM kit later, but for now im happy.

im thinking of wedling the bung for the sensor right after my x pipe, so that i get a mixture of both sides and it isnt so close to the real hot exhaust that it burns out the sensor quick. is this a good idea? also, can i mount it sideways (parallel to the ground)??

 

[Jesse N.]

The LM-1 is the best tool in the box. I love mine.

As far as sensor placement, I have mine about 12'' behind my turbos. Haven't had any sensor issues yet from the heat. I would probably move your sensor to the header collector. Less chance for a exhaust leak to screw up the readings and you will still have the bung in place if you pull the exhaust at the track. My daily driver is a '05 gtp grand prix. The o2 sensor is in the rear manifold about 3'' from the exhaust port. Kinda shows how tough the sensors are, even in a supercharged car. Just remember the unit must be on when the car is running. I had a buddy drive my car back from a car show and it killed the sensor in about 50 miles. If you need a replacement I get mine from carquest, have them look up a sensor for a '02 turbo beetle. Its an exact match an alot cheaper.

 

[curley8788]

The LM-1 is the best tool in the box. I love mine.

As far as sensor placement, I have mine about 12'' behind my turbos. Haven't had any sensor issues yet from the heat. I would probably move your sensor to the header collector. Less chance for a exhaust leak to screw up the readings and you will still have the bung in place if you pull the exhaust at the track. My daily driver is a '05 gtp grand prix. The o2 sensor is in the rear manifold about 3'' from the exhaust port. Kinda shows how tough the sensors are, even in a supercharged car. Just remember the unit must be on when the car is running. I had a buddie drive my car back from a car show and it killed the sensor in about 50 miles. If you need a replacement I get mine from carquest, have them look up a sensor for a '02 turbo beetle. Its an exact match an alot cheaper.

nice thanks for the tip! haha i will feel so gay ordering an o2 sensor for an 02 beetle...

 

[blue66]

nice thanks for the tip! haha i will feel so gay ordering an o2 sensor for an 02 beetle...

Tell em' it's for your sister's car, LOL.

The LM-1's are waaaaay cheaper now that the new version is out and price protection is gone.

 

[curley8788]

is there a way to get engine RPM without buying the rpm kit? what is the analog output for? the cable has three wires...maybe i can tap into my 12v tach source?

 

[JimM]

The analog output is for sending an O2 value to an engine management (EFI computer.)
And no, you need the tach kit to datalog the rpm.

If you REALLY want to get some useful info, you need O2, tach, throttle position, and MAP (vacuum).
My EFI will datalog those plus injector pulsewidth, it really draws a picture.

 

[curley8788]

The analog output is for sending an O2 value to an engine management (EFI computer.)
And no, you need the tach kit to datalog the rpm.

If you REALLY want to get some useful info, you need O2, tach, throttle position, and MAP (vacuum).
My EFI will datalog those plus injector pulsewidth, it really draws a picture.

thanks for the info. im just trying to figure out what the heck is so hard about mapping out engine rpm? anyone?

 

[vrooom3440]

To really tune you need RPM, MAP, and AFR logged into a computer.

And with the LM-1 you have to go to Innovate to get the add-on parts to do this.

This is both the advantage, and disadvantage, of the Innovate product. You can just go buy everything you need, plut it in, and it WILL work. That is really cool. But you can only buy it from Innovate at whatever price they want to charge (at least for the add-ons). That is not so cool. Nonetheless the Innovate product is the right answer for most people.

I have a Tech Edge wide band O2 because it is an open system. I can roll my own add-ons and the wide band supports that. This means I have to do some of my own engineering though. Tradeoffs

BTW you will love interpreting logged data. I can see wheel hop and accelerator pump shots in my logged data.

 

[forcd ind]

get the rpm converter-as i remember, it wasnt that bad-it really shows whats going on
i have a built in lc-1 in the chevelle, but prefer my lm-1, i can record, take it in the house, and see whats going on a lot better(ever try and stare at gauges over 100 mph, lol)