Tampa 928s

I decided to get this to see what is going on with my S/C to make sure I'm with in limits of A/F etc. Anyone used these before?



LM-1: Digital Air/Fuel Ratio Meter


The LM-1 is the industry's first and best complete wideband tuning system. A single self-contained unit combines a wideband air/fuel ratio sensor controller, a 6-channel data logger, and an easy-to-read backlit LCD display. This is the unit used by tuners, racers, and engine builders the world over.


Tuning an engine for maximum power previously required long trial-and-error sessions on a dynamometer. With the LM-1, precise AFR measurement allows the user to correctly adjust many variables- including carburetor jetting, fuel injection, turbo fuel curves, etc.- without long and expensive dyno sessions. The meter’s digital signal processing technology provides data on exactly how rich or lean an engine is running at any load. The LM-1’s self-calibrating circuitry also compensates for changes in temperature, altitude, and sensor condition. World's only fully-digital wideband controller.
Up to 6 Channels of data logging.
Portable/ Handheld.
Display both A/F and Lambda readings in real-time.
Auto calibration to compensate for changes in temperature, altitude, and sensor condition.
Two user configurable analog outputs.
LogWorks - award winning tuning software.




The instrument can sample and store 6 channels of data- air-fuel-ratio and up to 5 other sensor data channels- internally in operation for later analysis on a personal computer. At a sampling rate of 12 samples/second the instrument can store up to 44 minutes worth of data in non-volatile memory. The data can be downloaded to a personal computer using a standard serial port and viewed/analyzed by the included LogWorks software or any standard spreadsheet program:

The LM-1 also features two analog outputs to connect to analog gauges, dyno computers, ECUs, piggyback controllers, and other devices with analog inputs. Analog output 1 comes setup from the factory ready for narrowband simulation; analog output 2 is configured as 1 volt = 10 AFR (.6 lambda) and 2 volts = 20 AFR (1.3 lambda). With the provided LM Programmer software these analog outputs may also be configured by the user.

The LM-1 is available in various kit configurations:
The AuxBox Kit is comprised of the basic kit plus the LMA-3 (AuxBox) input Expander Cable. The AuxBox will give you the choice of picking sensors existing from the vehicle or use the 5 internal sensors. The five internal sensors are: RPM conversion (from a tach signal or inductive clamp), Manifold Air Pressure (MAP or Boost), Cylinder Head Temperature (CHT) or Exhaust Gas Temperature (EGT), Acceleration, and Injector Duty Cycle (Dwell).

FlyingDog

Tony has posted many threads about his use and results with his LM-1. Check out the twin screw thread and any other supercharger tuning or dyno chart threads in which Tony has posted.

Tampa 928s

For which Tony do you speak there are about a gazillion on this site

FlyingDog

v1uhoh Tony in Vegas
http://members.rennlist.com/v1uhoh/

Tampa 928s

I must be computer impaired I can't find him on this site by using search no matter what I call him.

FlyingDog

https://rennlist.com/forums/members/413-tony.html

Jim R.

I'm using the Innovate LC-1 and DB gauge in the car, with the LMA-3 aux-box set up for datalogging boost, rpm's, WBO2 A/F's, fuel pressure, and injector duty cycle to my laptop. Nice pieces, and gives great info. Sucks to be the poor guy holding the laptop on those "closed circuit test runs" though!

Jim

Tampa 928s

Care to share any hook up tips ?
I thought :
A/F uses LM-1
RPM off of panel
MAF need to reduce input voltage to less than 5v
Injector
and ?
Will wait on the FP for a little.

Tampa 928s

Thanks FD!

Jim R.

I would just get RPM's and WBO2 readings for now. The other stuff is nice to have, the A/F is probably the one you want to see right now.

As for the others, my wiring is going to be different than on your car, so I can't start to guess which lines to tap on your car. You may need to get into the wiring diagrams a bit there.......

The fuel pressure is from a 0-100 psi electronic sender (from innovate) mounted at the end of the passenger fuel rail. I needed that info due to my fuel pressure dropping on the dyno while tuning the new stage 3 setup last year......stock pumps will not supply that much power......bosch "044" fed by intank pump and a heavy duty wiring/relay setup will.

It is a whole lot of info to look at, great for tuning and nice to check every so often. I have the DB series WBO2 gauge setup in the ashtray mounted to a black plexi panel so I can glance down anytime without the laptop in the car.

One tip.....make sure you have a good common ground for the innovate setup. A poor ground will drive you nuts.

Jim

BrianG

Get the Shark Tuner as well.... then you can actually fix what you find amiss!

Tampa 928s

Well Tim is coming to Florida with his S/T , just getting things done ahead of time.

jorj7

I installed a LM-1 and LMA-3 at Bill's Garage a couple of months ago. I'm logging afr, rpm, boost,
and acceleration (forward/reverse & left/right). It takes a while to figure it all out, but I used some
of the info Tony and others posted. That really helped.

I running 2 O2 sensors, one wb and the other nb. I'm also using the RPM induction sensor
to get a spark signal. The boost is measured off the line that also goes to the Boost Gauge.
The accelerometers are built in.

Tampa 928s

I have a hook up ? I keep calling Innovative and get V-Mail:

The LM-1 powers the LM-3 but I need to hook up the Maf Reference using the Channel ground.
Do I need to ground the Lm-3 to provide a ground pathway or will the Lm-1 be sufficient?

Z

You don't need to ground the LM-3 if it's being powered by the LM-1, but you should connect a MAF signal reference ground to the (-) terminal of the channel that you're using to measure the MAF signal.