I started putting in a v8 awhile back and sold my 3. You can fine tune the setting in the software, but if its a. Your megasquirtii controller has a few options for controlling idle speed. Your megasquirtii controller uses the udn2916lb stepper motor driver to drive. Megasquirt does not need or use the information provided by the second ring of 360 slits or the length of the inner slits, so you just need to obtain a signal from the trailing edge of the ring of 4 slits. Idle valve options 2 wired valves ms1, 2 and 3 fidle wire ms3x setup use ms3x idle wire these valves are wired between an ignition switched 12v and the megasquirt idle valve wire in the loom. I have read the hardware manual and startup guide in the msextra oducmentation and the megamanual. The generation 2 mspnp and all new mspnp pro reaches out to more of your favorite vehicles. With that said, if the megasquirt software isnt updated to competetheyll start losing out. Failing that, you can try is setting the dwell to 0. Megasquirt pnp gen2 manual megasquirtpnp by diyautotune.
The pictures within this howto are my contribution to aid in. Higher values will result in higher operating idle rpm when air conditioning is commanded. Configuring megasquirtii or microsquirt tuning software. The time step size is how long the stepper driver will command an individual step. Tuning megasquirt for a steady idle efi tuning questions. I understand the concept and operation of the device but am. All bundled software for the extraefi ecus can be found here. This will require increased idle duty to get the car to idle. Setting up basic sensors map, throttle, oil and fuel pressure, etc learn advanced features such as boost control, traction control, flex fuel, nitrous.
Beginning with the mspnp2, we redesigned the core of the mspnp hardware, basing it off of the much faster megasquirtii processor which will give you all of the control youve been looking for. As a general rule, the newer the firmware, the better the closed loop idle control. Select and assemble your fuel and ignition systems. You will need to add 4 wires to your db37 connector all documented on the ms extra site. First, make sure that the idle control is set to stepper valve, not pwm or onoff idle. Note that the transistor on the v3 main board is not sufficient to drive a ford pwm idle valve as well as many other makes directly. Wiring the stepper idle adapter addon has 12v and 5v power supply wires and ground. I take absolutely zero credit for the length of material youre about to read, however i have made a few comments intext that you can see which i will highlight in green. The only issue i have is sometimes the last known good idle dc will be a little high and the car will idle at 1800 for about 30 seconds. Megasquirt first evolved from a do it yourself project to low cost alternative, to now with ms3 matching or exceeding the feature set of the best high end fuel injection controllers. Im suspecting that ive burned up my rings on my 16vt. Idle control to get a nice idle its important that your timing and afr at idle is set up well. Megasquirt support forum msextra ls1 iac idle setting. Official support forum for megasquirt, microsquirt, ms1extra, ms2extra and megasquirt 3.
Learn to tune basic features like idle, fuel, ignition. Map sensor settings idle control valves layout of the settings. Here, weve put together a range of tips for how to set up and troubleshoot stepper idle air control valves. Now is it the idle cranking duty setting that controls engine idle on start up. The overlap in the cam at idle tends to throw the afr readings off. It has 8 fuel and 8 logic spark outputs offering full sequential fuel and spark for hiz injectors and logic level coilonplug coils or highcurrent coils with suitable external ignition module. Far too long tuners have had to settle for what ever the controller manufacturer provided, far more often than you would think this means a clunky user interface and minimal feature set. So far, the car will idle without stalling with ac on in just about every situation i can put it in. Setup and calibrations this set of guides will help your tune your mx5 on a megasquirt ecu, but the focus will be on using a ms2extra firmware based ecu. These are selected under settingsidle control in megatune. Megasquirt training course evans performance academy. Megasquirt support forum msextra support and discussion forum for megasquirt 1, 2, 3, microsquirtmodule, diypnp, mspnp2, ms3pro. The software application you use to tune and configure your megasquirtii or microsquirt is called megatune2.
Setting up and troubleshooting stepper iac control on megasquirt. Canbus passthrough is a system that allows one laptop running tunerstudio to set the parameters and datalog more than one controller at a. Setting up and troubleshooting stepper iac control on. This setting increases the pwm idle warmup duty cycle commanded value by the number input in this cell. These fall into the broad categories of stepper motor iac, and fast idle valves pwm or onoff. There will be some differences if youve gone all out for a ms3x. I would set the bin the car is actually idling at in this range to about 15 degrees with a factory cam, or 20 with a larger cam. The ac idle up feature allows the engine idle speed to be increased when the ac. Megasquirt tuning basicstiming stinger performance. You must use the another transistor such as a tip120121122 that control the valve. Megasquirt support forum msextra ac idle up settings. You also need a laptop or notebook computer and a conventional serial port or usbserial adapter to communicate with megashift. This writeup covers using a vb921 for controlling the coil.
It will run on any computer that can run window 98 or higher. This should be viewed as an article to get the basics of how to tune your megasquirt equipped car. I just dont understand how my timing is not being set by megasquirt. I can also handle going back and changing the idle speed via the throttle body plates retweak. Learn how and what to data log based on application.
In depth look at the tuner studio idle control screens and tips on how to configure. Thinking about that, i think that i can correlate the time i started noticing oil consumption problems among others related with when i. You need to set your megasquirt ii or microsquirt controller to tell it if you have a fast idle solenoid type valve or a stepper motor iac, or neither. Once i override the idle valve it idles around 750rpm with 22 of manifold vacuum. The last piece in the idle puzzle is the idle advanced settings.
Its been over a year since i played with the megasquirt on my car, so bear with me. I finally have operational ac after about 3 years of fiddling and component upgrades. If you need something and you cant locate it, feel free to contact me using the button in the support section above. Top dollar efi controllers are no different, the tuning software is typically lacking in feature and refinement, making configuration confusing and overly complex.
I think when you rename your tune and keep working with that same tune, tunerstudio might. In order to help stabilize idle rpm we can use this mechanism too, meaning we play around with timing at idle in order to help too low or too high rpm we can do that in a very good resolution resulting very stable idle. In this webinar well discuss the software and look at some tips and tricks to get the best out of your tuning session. A simple guide on how to install and setup tunerstudio, the tuning software for megasquirt, for the first time. I came across a post while searching where weeblebiker member on here mentioned something about how he wondered if his ring failure had something to do with his over run settings in megasquirt. This is an open loop idle valve setting, so the mspnp will not seek a commanded rpm. How to get higher idle on cold start ford mustang forums. Megasquirt was designed by bruce bowling and al grippo in 2001. The windows 9xmexpvista software applications you use to tune and configure your megashift hardware are called tunerstudio by phil tobin. Megasquirt2 products running bowling and grippo firmware. The idle valve uses a manifold that diy autotune sells, it is designed to mate to a jeep idle valve the part numbers are on the diy site.
Timing is a very useful tool for controlling your idle speed. Basic functions such as fuel, ignition and idle programming are covered as well as more advanced features such as antilag, rev limiters, traction control, closed. I usually attempt to tweak the fuel and timing at idle based on the maximum vacuum for an rpm especially with timing watch your vacuum gauge the engine will tell you what it wants when idling. Once you do that, there is a idle warmup duty steps graph you can open under startupidle where you can raise the duty cycle at those lower coolant temps to raise the cold idle rpm. Megasquirt training course starts with the basics of downloading and installing the tunerstudio software. Tuning involves setting all the parameters that your microsquirt controller uses to be. Currently the only software fully supporting all versions of megasquirt 1, megasquirt 2 and megasquirt 3, tunerstudio will simplify your megasquirt experience. Not enough fuel will make your idle hunt and too much will bog it down.
I taught myself some more in the idle function section of the software. Software configuration as per the prerequisites in section 1. The two rpm set points are linearly interpolated between the two temperatures to provide a smooth transition during warmuptps threshold is the point above which the idle valve closes in adc as it is no longer needed. This is the present top of the range ecu in the traditional megasquirt range. The megasquirt ecu is a popular choice for enthusiasts across the world, however getting familiar with the tunerstudio software can take some time. Best tuning practice is to start with a small value and increase until stable idle.
Slow idle rpm is the idle target for the engine at, or above the slow idle temperature fully warmed up. Megasquirt3 setting up megasquirt uk official site. There are several versions of tunerstudio available depending on your controller and support for more controllers under way along. Install and set up tunerstudio for megasquirt youtube.
Now i think i can tune a warmup valve thats you mike i practiced on my car and tuned all the tables so i can use it if i want. Full details of each step are provided within the body of the manual. These are selected under settings idle control in tunerstudioms. My issue now is the idle drops too much practically stalling when the ac kicks in at idle. Quickstart guide in brief this list is provided as the bare essentials that you must read.
My car was not turbocharged, but had a with a big cam in it which is why i went with the megasquirt. Although i did put alot of reading and effort into setting my system up. Ideally, youll want the timing to be set to slightly below the timing that would give it the most power on most piston engines, this typically works out to somewhere in the 10 to 18 degree range. I can handle going back in and changing my idle speed basic setting. I have not tried the closed loop idle advance as of yet. To this basic control algorithm, several features have been added as described below. This article is literally copied and pasted from krambos silverado ss page. Go to startupidle, then idle control, then turn idle valve type to pwm with the open loop warmup setting. Wiring, installation and tuning services are also available on site upon request. Idle settings with ac on megasquirt help bmw e9 coupe. The problem is that when im cruising down the road, or at idle, it starts going into the accel enrich setting. Available on vehicles that use a pwm style idle valve with an open loop, a. To adjust this, at your target idle speed typically in the 950 range with a 2.
However, setting up megasquirt to work with this ignition is surprisingly simple. You need to set megasquirtii to tell it if you have a fast idle. Megasquirt is a generalpurpose aftermarket electronic fuel injection efi controller designed to be used with a wide range of sparkignition internal combustion engines i. Tunerstudio brings a whole new level of refinement for tuning software. A laptop or tuning computer to run the included tunerstudio ms software. The megasquirt ii and megasquirt iii as well as related systems like the ms3pro can control a stepper iac valve, but these are a little bit harder to set up than a pwm type. Hello sfdon or others experienced with managing idle with megasquirt and ac on. Idle advance of 10 to 12 degrees maximum with stock camshaft. The idle control settings are not the most important thing to adjust to get a. Megasquirt support forum msextra reversed pwm idle.