Motec M2R - 2 Rotor ECU

Why step up to a Motec Engine Management System? Get a comfortable chair, because there is a long list to follow.

For starters, it's no coincidence that racing championships worldwide have been won using Motec Engine Management Systems. The products are designed from the ground up to be the best.

That sounds impressive enough, but lets get to the actual facts that affect your project.

In addition to having a very efficient tuning interface, the M2R has many options that will help you make more horsepower, and make it safely. Oddly enough, we find that most people interested in the M2R don't even realize it's potential, and so we will list the many built in features below.

Wideband Closed Loop Mixture Control:    Many ECU's are advertised as having closed loop control, but with very few exceptions most closed loop control systems are designed to maintain an emissions friendly air fuel ratio at idle and cruise.

The closed loop control in the M2R is designed to accurately control the air fuel ratios at any rpm and boost level!

By using this powerful feature, you can insure that your air fuel ratios are correct under all conditions. This is especially helpful with todays pump gas which varies greatly in density and oxygen content from one batch to the next. This is also helpful for dealing with the dreaded heat soaked air temp sensor which would normally make your engine run lean.

By enabling closed loop control, the M2R will constantly monitor your air fuel ratios, and make adjustments on the fly. In practice, this is done by entering Lambda values into a 3 dimensional table specifying what you want the air fuel ratios to be at any combination of rpm and load. For instance, do you want your air fuel ratio to be 14.0:1 at cruise, and 12.5:1 at 10 psi boost? No problem, just enter the numbers into the table, and the M2R will constantly adjust to that target.

3 Dimensional Cylinder Trims    Everyone knows that no two fuel injectors flow the same, but did you realize that the flow difference between two or more injectors does not remain constant across their operating range? For example, a pair of injectors may show a static flow difference of 2%. With basic cylinder trim features available in other ECU's, this can be accounted for by simply adding 2% to the injector that flows the least.

This is simple enough, and seems like a great way to fine tune your motor, but there is one problem. The 2% difference that you see at static flow (Which you will never see on a running engine anyway...) could easily be 10% or more at low pulsewidths, and vary anywhere in between across the range. Our dynamic injector flowtesting service identifies these flow variances, and the M2R allows us to make cylinder trim corrections at any point on the map. The end result is better throttle response, driveability, fuel mileage, and most importantly MORE POWER! (As part of the package, your injectors will be cleaned and flowtested so that we have this information to enter into your setup file.)

Quick Lambda and Lambda Was    Huh... That's what I said when I first heard it. The M2R features the most simplified tuning interface on the market. The quick lambda, and lambda was features make tuning a breeze so that you can spend your time driving your car, not battling with your ECU.

Here's how it works. Target air fuel ratios are entered into the lambda table (The same table used for closed loop control.) at every rpm and load point. This tells the M2R exactly what your air fuel ratios should be. To tune the system, you have two options.

The first is the quick lambda feature. With the engine running at any point on the map, you simply hit the "q" button on your keyboard. The M2R looks at the current air fuel ratio and the air fuel ratio in the lambda table, and automatically changes the pulsewidth to deliver the correct air fuel ratio. At this point, hitting enter sets the point, and marks it with an asterisk so that you know that point has been tuned.

The lambda was feature is just as simple, but is designed to allow you to tune based on previously logged data. Here's how it works. Select any cell on the map, and hit the "l" key on your keyboard. A window pops up asking what the lambda reading was. Referring to your previously logged data, you simply enter the number, and the M2R makes the appropriate change in pulsewidth value.

Tuning does not get any easier than this.

Extensive Data Logging and Interpretation Software    The M2R will log any internal channel, as well as the values of any auxiliary inputs. This logged data is then viewed using Motecs Interpreter software. I could go on for hours about Motec's data logging software, but you can see for yourself by downloading Motec Interpreter.

As the name implies, the software is used to interpret the data logged with the M2R. Motec Interpreter has many features that ease the tuning process like mixture maps, completely configurable math channels, etc. Like I said, I could go on for hours, so save me the trouble and download the file. You will be amazed at its capabilities.

Traction Control    The M2R's built in traction control feature can be a big help on high horsepower turbocharged street cars. To be completely fair, a true road race quality traction control setup requires an expander box to monitor all four wheel speeds, but to simply limit or eliminate excessive wheelspin you need no more than a speed sensor reading driveshaft speed, and one front wheel speed. We have adapters available that go between the transmission, and the speedo cable delivering speed information to the M2R. This allows you to keep your stock speedo function.

Launch Control    Need I say more? Add two speed sensors and you're ready to go!

Boost Control    The M2R features full boost control vs rpm. The boost table can even be changed on the fly to suit operating conditions with four available compensation channels. For instance, maybe you tuned for 15 psi on the dyno, but you would like to reduce that if the water temp or air temp exceed a certain value. No problem, it's all built in.

Maybe you occasionally run race gas, and would like to be able to run increased boost, and advanced ignition timing at the flip of a switch. Again, no problem, it's all built in. Buy a 2 dollar switch, set the appropriate values in the compensation table and off you go.

Ground Speed Limiting    Ever let your brother in law drive your car? Would you like to keep him under control. Just add 2 speed sensors.

Completely User Configurable    This is sort of a catch all. The input channels can be configured to read just about any sensor available, as well as reading some more basic things like a potentiometer or switch input. Boost, Ignition, and Fuel can all be trimmed based on water temp, air temp and manifold pressure as well as an auxiliary voltage and temperature input.

The possibilities are limited more by your imagination than the limitations of the M2R

Reads Bosch Motorsports LSM-11 Wideband Sensor Directly    The M2R is designed to read the LSM-11 sensor directly without an external amplifier. The LSM-11 sensor preceeded the current LSU sensors. It has slightly slower response time, but has a big advatage when used with a rotary engine.

The current LSU sensors are VERY temperature sensitive and become VERY inaccurate at anything above about 1550F. The LSM-11 will maintain accuracy up to 2200 degreesF and for that reason alone is a far better sensor for rotary applications.

The M2R can be configured to read the output of any aftermarket lambda amplifier, but because they are all based on the Bosch LSU sensor with no provision for temperature monitoring, we prefer to use the Bosch LSM-11. It is a more expensive sensor, but how expensive is it to tune based on inaccurate lambda readings and possibly harm your engine?

Hopefully this has alerted you to the value and capabilities of the M2R. Note that the basic M2R can be had for far less without the advanced tuning, datalogging, and lambda option, but we do not sell it without these options.

Why? Let's say for instance that you are having problems while tuning and you call us for support. The first thing we will ask is to see your logged data so that we can see what is causing the problem. Without it, we are shooting in the dark, and will not be able to help you sort out the problem.

Without the ability to log all the internal channels, and air fuel ratios, we have a situation very similar to any modern computer controlled car. It's acting up, but until the technician at the dealership plugs his magic machine in to read the data, we have no idea why.

We're not interested in selling ECU's that ultimately end up delivering less than their full potential. For that reason, we only sell ECU's with these options enabled. It's all about making sure you get the desired end result which is a fast reliable fun to drive car.

If you're interested in stepping up to world class engine management, follow the Contact Info link to the right and we will get you set up.

For a partial list of championship winning teams running Motec equipment, follow this link to the Motec USA website.

Thanks for stopping by.

Paul Yaw
Yaw Power Products