Idle setting megasquirt software

Here, weve put together a range of tips for how to set up and troubleshoot stepper idle air control valves. Your megasquirtii controller uses the udn2916lb stepper motor driver to drive. This setting increases the pwm idle warmup duty cycle commanded value by the number input in this cell. Megasquirt2 products running bowling and grippo firmware.

The megasquirt ecu is a popular choice for enthusiasts across the world, however getting familiar with the tunerstudio software can take some time. The time step size is how long the stepper driver will command an individual step. I can also handle going back and changing the idle speed via the throttle body plates retweak. I started putting in a v8 awhile back and sold my 3. Megasquirt support forum msextra ac idle up settings. Map sensor settings idle control valves layout of the settings. Learn to tune basic features like idle, fuel, ignition. Your megasquirtii controller has a few options for controlling idle speed.

Select and assemble your fuel and ignition systems. My issue now is the idle drops too much practically stalling when the ac kicks in at idle. Top dollar efi controllers are no different, the tuning software is typically lacking in feature and refinement, making configuration confusing and overly complex. The pictures within this howto are my contribution to aid in. You must use the another transistor such as a tip120121122 that control the valve. 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 megasquirt. The last piece in the idle puzzle is the idle advanced settings.

Setting up and troubleshooting stepper iac control on. Megasquirt support forum msextra ls1 iac idle setting. A simple guide on how to install and setup tunerstudio, the tuning software for megasquirt, for the first time. 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. 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. Higher values will result in higher operating idle rpm when air conditioning is commanded. Idle settings with ac on megasquirt help bmw e9 coupe. Learn how and what to data log based on application. Quickstart guide in brief this list is provided as the bare essentials that you must read. The software application you use to tune and configure your megasquirtii or microsquirt is called megatune2.

I have not tried the closed loop idle advance as of yet. The ac idle up feature allows the engine idle speed to be increased when the ac. This is the present top of the range ecu in the traditional megasquirt range. Megasquirt is a generalpurpose aftermarket electronic fuel injection efi controller designed to be used with a wide range of sparkignition internal combustion engines i. These are selected under settings idle control in tunerstudioms. This should be viewed as an article to get the basics of how to tune your megasquirt equipped car. In depth look at the tuner studio idle control screens and tips on how to configure. Megasquirt training course starts with the basics of downloading and installing the tunerstudio software. Configuring megasquirtii or microsquirt tuning software. Now is it the idle cranking duty setting that controls engine idle on start up. Install and set up tunerstudio for megasquirt youtube. Megasquirt3 setting up megasquirt uk official site. I think when you rename your tune and keep working with that same tune, tunerstudio might.

I just dont understand how my timing is not being set by megasquirt. 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. I have read the hardware manual and startup guide in the msextra oducmentation and the megamanual. The problem is that when im cruising down the road, or at idle, it starts going into the accel enrich setting. A laptop or tuning computer to run the included tunerstudio ms software. As a general rule, the newer the firmware, the better the closed loop idle control. Slow idle rpm is the idle target for the engine at, or above the slow idle temperature fully warmed up. The overlap in the cam at idle tends to throw the afr readings off. 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.

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. The generation 2 mspnp and all new mspnp pro reaches out to more of your favorite vehicles. All bundled software for the extraefi ecus can be found here. It will run on any computer that can run window 98 or higher. These are selected under settingsidle control in megatune. Thinking about that, i think that i can correlate the time i started noticing oil consumption problems among others related with when i. I taught myself some more in the idle function section of the software. First, make sure that the idle control is set to stepper valve, not pwm or onoff idle.

These fall into the broad categories of stepper motor iac, and fast idle valves pwm or onoff. You will need to add 4 wires to your db37 connector all documented on the ms extra site. Wiring the stepper idle adapter addon has 12v and 5v power supply wires and ground. Its been over a year since i played with the megasquirt on my car, so bear with me. Megasquirt training course evans performance academy. You can fine tune the setting in the software, but if its a.

Official support forum for megasquirt, microsquirt, ms1extra, ms2extra and megasquirt 3. This will require increased idle duty to get the car to idle. I can handle going back in and changing my idle speed basic setting. Timing is a very useful tool for controlling your idle speed. 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. I finally have operational ac after about 3 years of fiddling and component upgrades. The idle control settings are not the most important thing to adjust to get a. 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.

Wiring, installation and tuning services are also available on site upon request. This writeup covers using a vb921 for controlling the coil. 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. 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. Im suspecting that ive burned up my rings on my 16vt. 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. Megasquirt support forum msextra reversed pwm idle. The windows 9xmexpvista software applications you use to tune and configure your megashift hardware are called tunerstudio by phil tobin.

Tuning megasquirt for a steady idle efi tuning questions. So far, the car will idle without stalling with ac on in just about every situation i can put it in. 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. My car was not turbocharged, but had a with a big cam in it which is why i went with the megasquirt. 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. Software configuration as per the prerequisites in section 1. 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. Megasquirt tuning basicstiming stinger performance. If you need something and you cant locate it, feel free to contact me using the button in the support section above. Once i override the idle valve it idles around 750rpm with 22 of manifold vacuum. To adjust this, at your target idle speed typically in the 950 range with a 2. Although i did put alot of reading and effort into setting my system up.

In this webinar well discuss the software and look at some tips and tricks to get the best out of your tuning session. Megasquirt was designed by bruce bowling and al grippo in 2001. Currently the only software fully supporting all versions of megasquirt 1, megasquirt 2 and megasquirt 3, tunerstudio will simplify your megasquirt experience. Best tuning practice is to start with a small value and increase until stable idle. However, setting up megasquirt to work with this ignition is surprisingly simple. Available on vehicles that use a pwm style idle valve with an open loop, a. There will be some differences if youve gone all out for a ms3x. 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. 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.

You also need a laptop or notebook computer and a conventional serial port or usbserial adapter to communicate with megashift. Not enough fuel will make your idle hunt and too much will bog it down. Tunerstudio brings a whole new level of refinement for tuning software. Tuning involves setting all the parameters that your microsquirt controller uses to be. There are several versions of tunerstudio available depending on your controller and support for more controllers under way along. Full details of each step are provided within the body of the manual. I understand the concept and operation of the device but am. 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. Idle control to get a nice idle its important that your timing and afr at idle is set up well. 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. This article is literally copied and pasted from krambos silverado ss page.

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. How to get higher idle on cold start ford mustang forums. Hello sfdon or others experienced with managing idle with megasquirt and ac on. 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. 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. Megasquirt support forum msextra support and discussion forum for megasquirt 1, 2, 3, microsquirtmodule, diypnp, mspnp2, ms3pro. 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. 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. Go to startupidle, then idle control, then turn idle valve type to pwm with the open loop warmup setting. Idle advance of 10 to 12 degrees maximum with stock camshaft. 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. This is an open loop idle valve setting, so the mspnp will not seek a commanded rpm.