Ms2 extra manual download

You download the set-up file see below , click on it, and the package installs itself. You may have to select some options, or you may chose to select all the defaults. A number of the sensor readings are displayed, as well as some outputs. For example, the injector pulse width is the measure in milliseconds of how long the injector is opened for each pulse, regardless of how many times it is opened in a cycle. Duty cycle gives the percentage of time the injector is open irrespective of individual pulse duration.

Setting the General Parameters Note that as the code develops, some advanced options may not be documented here. To find information on these advanced options, see the TunerStudioMS help file. Some general principles to follow when setting the configuration parameters are: Always save a combination after you have changed things, and give it a descriptive name. See the X-Tau page for more information.

Chose whether you want two point a high temperature and a low temperature settings or 10 entry tables for the prime pulse, afterstart enrichment, and warmup enrichment. The tuning values are listed in under the menu item T a bles. Input Smoothing Lag Factors Lag factors force the variables to change more slowly than the actual input value.

Note that in all cases, is no lag effect at all, and smaller numbers slow the input response speed. For example, suppose your last MAP value was 70, the lag factor is 40 and the current MAP value read directly from the sensor is Rev Limiter Algorithm - you can select: None - no rev limiter Spark Retard - reduces revs by retarding the ignition advance, Fuel Cut - reduces revs by eliminating fuel.

Maximum Retard is the MOST the spark can be retarded in spark Retard mode, Lower Rev Limit is the level at which the the fuel is re-enabled in Fuel Cut mode, and the level at which timing is fully restored in Spark retard mode. Upper Rev Limit is the level at which the rev limiter is initially applied. For example, if you set the upper limit to and the lower limit to , then in: Spark Retard mode : Spark would be applied normally from the advance table, etc.

It would then be cut linearly as the revs increased to rpm. Note that the spark is retarded with rising revs between and , as well as when the revs fall. Fuel Cut mode : Fuel would be applied normally from the advance table, etc.

Fuel would then be cut completely, and restored ONLY when the revs dropped to rpm. Note that the fuel is NOT cut with rising revs between and , only as the revs fall.

If you are using other sensors, you can use the ' Calibrate Thermistor Tables ' dialog under ' Tools '. Even idle is NOT allowed, because these tables ONLY exist in flash, so once a table is erased, there is nothing but garbage in there until it is re-programmed, one word at a time.

Until that reprogramming is complete, operating the engine is unsafe. MegaSquirt uses coolant and air temperature sensors to determine the warm-up characteristics of the engine and the density of the intake air. This means that they are resistors whose resistance decreases as their temperature goes up.

The 'supply voltage' of 5. The voltage at a point in the circuit between the two resistors is used by the ECU to determine the resistance of the sensor, and thus its temperature. MegaSquirt-II reads this voltage as a series of voltage steps: 0. The conversion from volts to steps is done by the analog-to-digital converter ADC. There are various arguments for and against using either CHT or oil temperature as the 'coolant' temperature input on air cooled motors. A lot depends on whether the motor is substantially oil cooled or not.

Since the CTS input is used for warmup enrichment, you want something that responds fairly rapidly, so this is highly engine-dependent.

For high temperature applications i. However, note that the tuning software limits the temperature range. The thinking is that if you are at an extreme it is probably a bad or missing sensor, so it goes to a default value. This isn't a big deal in TunerStudio though, you can change these limits in the ms2ReferenceTables.

The additional problem with very high temperatures is that the difference in voltage gets very small and MegaSquirt can only read discrete voltage steps, about 5 milliVolts for each of the steps from 0. Also, if the volts at the processor pin gets very near 5. The default value is 2. Note that you have to re-calibrate the thermistor tables when you change resistor values. Here is a simple ADC count calculator that shows the number ADC steps for a given bias resistor and sensor resistance.

The engine does not need to run rich for long periods, only enough to keep the car driveable while it is warming up. Once the cylinder head is up to temperature, the car is usually quite driveable. For an air cooled engine you can drill and tap into a fin in the head for the CHT sensor. The other side says that it does not matter if the oil warms more slowly, you can just set the warm-up enrichment to come off at a lower temperature.

In that case, the GM coolant sensor fitted in the oil sump will work nicely. Search the archives for extensive discussions on these points. It is your decision. Idle Control Settings The basic idea of IAC is that the motor or PWM solenoid starts out with a large opening of the air valve at cold startup, then gradually closes as the coolant temperature rises. The basic motor position at any given time is determined from the input table of step position versus coolant temperature. To this basic control algorithm, several features have been added as described below.

If you have an IAC stepper motor, you will have to choose between 'moving only' and 'always active'. If you set your stepper to 'always on' for 15 min or so and it doesn't feel too hot to you, then you can leave it that way.

Apparently this is what General Motors does. But if you want to be safe you can test it on the bench for 15 min or so. It will get right warm, but it shouldn't burn your fingers just touching it.

If it gets too hot, use 'moving only' instead. You can also set your Fast Idle Threshold if you have installed a fast idle solenoid. Enter a coolant temperature to turn on the fast idle solenoid.

The Fast idle Threshold is independent of any warm-up enrichment. Fast idle valves generally have one or two wires. Modifications to the board are required, see this link for more details. Stepper motor IACs usually have four wires. This is the most common type, it holds its position if not powered, and is difficult to turn by hand.

Required if your stepper 'free wheels' when you spin its pintle un-powered with your hand. This can be useful in some situations in which the stepper moves unreliably if moving only at the lower voltages of cranking and warming up, etc. However setting it to "IAC Stepper Moving Only", might cause a problem with idle speed changing from one start to another.

You can test if your IAC is suitable for 'always on' by leaving your stepper powered on the bench for 15 min or so. If it doesn't feel too hot to you, then set it to "Always On". Apparently this is what GM does.

But if you want to be safe they should test it on the bench for 15 min or so, or monitor it closely in the car while not moving for at least 15 minutes, checking the IAC temperature frequently with your fingers. It may get warm, but it shouldn't burn your fingers just touching it.

Leave the other values below alone, you can experiment with them when you get the engine running. Cranking Position IACcrankpos : During cranking, extra air may be useful in the same way as extra fuel in cranking pulses. The table value for the starting temperature may be fine after the engine has started up, but during cranking more power may be needed, especially if the starting temperature is cold. To provide this, you can input a step position that provides a larger than normal air opening during cranking.

See the diagram below If this feature is not desired, Just set 'Cranking Position' to a value higher than any table value. Then the table value will always be used since it provides more opening. Higher values give a higher idle for longer periods, which can improve starting performance. What this does is allow constant motor motion while the coolant temperature is rising, but when it peaks, there will be no further motion unless things cool back down - which is unlikely.

This feature is used toward the end of the warmup sequence when the coolant temperature is close to its final operating temperature. In this case, fast idle will normally come off, but SOME cars very few may need extended fast idle. An example is a car that uses heavy weight oil, which is nowhere near at operating temp when the coolant gets there, plus a hot cam with not enough idle torque to overcome the oil drag.

From that point on, the steps are tapered in so as to reach the last step value in the table over the 'cold taper time' period. This slows the reduction in idle air as the engine continues to warm up increasing the idle speed for longer than the coolant temperature alone would do. Note that this value must be higher than the lowest value in your IAC PWM table, or you can get strange operating results.

These constants are either calculated, or based on the configuration of your system. For the most part, these are very similar to those from MegaSquirt.

Note that for a Wankel rotary engine Mazda 13B, etc. Injector Opening Time ms InjOpen is the amount of time required for the injector to go from a fully closed state to a fully opened state when a Since fuel injectors are electro-mechanical devices with mass, they have latency between the time a signal is applied and the time they are in steady-state spraying mode.

Typically, this value is close to 1. Note that the closing time should be subtracted from this value, but it is generally very small and can be neglected.

Generally 0. So, with a 0. Conversely, If you had injector specs that stated the opening time was 0. This allows full voltage to reach the injectors while opening. You use high frequency to make things smooth. Since the injectors stay open for milliseconds, you need a period that is much shorter than that. Such a frequency never lets the injector start to close - the turn off turn on cycle is so fast that the injector stays where it is. To tune the PWM [pulse width modulation] values for your engine, you need to know what kind of injectors you have- low impedance or high-impedance.

If you are running high-impedance injectors greater than 10 Ohms , then set the PWM time to a number like This MSxGuts kit includes all the capacitors, diodes, integrated circuits, resistors, transistors, ECU connectors, the tube of heatsink compound and a bit of jumper wire in a Megasquirt V3. The kit does not include the V3. Note: Now using a brushed silver finish MS3 enclosure, which will help facilitate potential future upgrades from MS2 to MS3 without extra cost!

It has a shielded This is the latest version o Tune it right. Tune it for less. Tune it Yourself. We are open and shipping. Hi, Guest! Welcome Guest Login Register. Add to wishlist. Upgradeable to 44psi Speed density or Alpha-N. Use any injector — High or Low impedance. Compatible with output from narrowband sensors and wideband O2 systems. Log data on your laptop for later analysis. Tuning software is free for download and regularly updated with new features.

Source code and hardware information is available online allowing you to customize things beyond the massive featureset already available if you choose. Includes proper female DB37 and DB15 connectors and shells for building your wiring harness.

Excellent Fit and Finish! Flanged for easy mounting. Features specific to the latest PCB Version 3. This standardizes the part numbers used, as well as the assembly process, resulting in consistently high quality.

I know you were already used to that from us here at DIYAutoTune ; All standard ignition input settings are now easily set by jumper shunts, no need to bust out your soldering iron to change your base hardware ignition configuration anymore! This is one of the coolest features as this was a very common modification that will no longer be needed.

The circuitry on the PCBv3. Customer reviews Rated 4. Most recent reviews Most helpful reviews. Add a review Cancel reply You must be logged in to post a comment. What inputs and outputs is the MS2 V3. The code it initially shipped with will be indicated on a sticker on the underside of the unit. Is the V3. The V3. Consequently, it is not offered in kit form.

What connections are on the DB15? By default, it only has a couple extra reference voltage and ground pins for sensors. Where is it built? The components are assembled at various locations in the US, with final assembly completed in Gainesville, Georgia. What is the warranty?

We provide a one year limited warranty against manufacturing defects. Does it have a independent 2nd barometric MAP sensor for continuous real-time baro correction? If not how would I modify it to include one? Q I have a MS2 V3. Does it have a inde Read more Asked by Dan Fazzan. Read more Asked by Randy S. Answered by the admin The MS2 can definitely run this engine but may require a few add on mods depending on what inputs and outputs you need beyond fuel and spark control. Answered by the admin It can with the appropriate internal mods.

Q Is there any possible way to use this board to run semi-sequential on a 6 cylinder? I know there' Read more Asked by Mark Patrick. Answered by the admin We don't sell them already modified for more than two fuel outputs, but see this link if you wish to modify one yourself: MS2 extra injector output modifications.

Q Will this work on a turbo charged 2. Relay board? Asked by Tony. Answered by the admin It will need internal modifications. Q Do the ms2 come with built in boost controller? Asked by Marcus. Answered by the admin Pin 30 PWM idle out can be used for boost control if not being used for other purposes. Q Can you work in parallel with the stock ECU?

Answered by the admin As long as the car has a manual transmission, the MS2 would be able to completely replace all stock ECU functions if you have put the appropriate mods in the MS2. Q Does the diy megasquirt 2 have auto tune? If not is there software for that Asked by Arcus Helms. Answered by the admin You will need the registered version of TunerStudio since the autotune functionality is done on the laptop side rather than in the ECU.

Q Shipping to germany? Asked by Sascha Aderhold. Answered by the admin We ship worldwide. Q Can the ms2 run a mitsubishi 4g15 dohc planning to turbocharge it Asked by brandon. Answered by the admin It can support many Mitsubishi ignition systems, but may need some modifications. Q How does your PC connect to the Megasquirt? Does it use a USB cable, or serial cable?

Asked by Mike. Answered by the admin This one has an RS serial connector. Q Im interested in using on a subaru ej20 turbo engine. Q What is in this kit? Or what else shoud i buy to install this Ecu on a turbo m50b25?