https://www.ecmtuning.com/wiki/ 2026-06-04T02:36:03-04:00 https://www.ecmtuning.com/wiki/ https://www.ecmtuning.com/wiki/lib/tpl/dokuwiki/images/favicon.ico text/html 2025-10-19T07:50:39-04:00 https://www.ecmtuning.com/wiki/sdsetup?rev=1760874639&do=diff ECMLink - Speed Density Setup This page describes the basic process for getting your car setup for speed density operation with ECMLink. If you need a more general speed density tutorial, then the Speed Density 101 page may be what you're looking for. In fact, we're going to assume you already know everything off that page as we discuss items below. So it might be a good idea to read over it even if you're already pretty familiar with SD in general. text/html 2024-03-15T11:16:42-04:00 https://www.ecmtuning.com/wiki/sdveadjsdratio?rev=1710515802&do=diff SD VE Adjust (SDRatio) This page describes an adjustment tool in the ECMLink application that helps to dial in your speed density (SD) VE table based on data collected from a mass airflow sensor. If you do not plan to run speed density mode with your car or you do plan to run SD but do not have a mass airflow sensor installed for dial-in, then this page is completely useless to you and you should ignore it. text/html 2024-03-15T11:16:42-04:00 https://www.ecmtuning.com/wiki/sd101?rev=1710515802&do=diff Speed Density 101 The term “Speed Density” typically refers to the operation of an engine using an estimation of airflow based on pressure, temperature and some idea of the engine's volumetric efficiency (more on this below). This page outlines the basic concepts behind speed density operation to serve as a foundation for a deeper understanding of ECMTuning's implementation later. text/html 2024-03-15T11:16:42-04:00 https://www.ecmtuning.com/wiki/v3changelog?rev=1710515802&do=diff ECMLink (V3) Laptop Application Changelog Downloads page 3.46.226 (07/04/2023) * Added full support for ARM processors (64-bit only) * Linux - works directly with serial ports; no setserial needed * Mac - universal image works on both Intel and M1/M2 Macs text/html 2024-03-15T11:16:42-04:00 https://www.ecmtuning.com/wiki/airflowoptions?rev=1710515802&do=diff Airflow Options With the release of ECMLink, users have the option to run any number of different mass airflow solutions. They can run a Mitsubishi MAF sensor (1G, 2G, EVO8), any one of a number of GM MAF sensors, or they can run speed density. This page outlines some of the considerations of each. text/html 2024-03-15T11:16:42-04:00 https://www.ecmtuning.com/wiki/sdveadjcomft?rev=1710515802&do=diff SD VE Adjust (CombinedFT) This page describes an adjustment tool in the ECMLink application that helps to dial in your speed density (SD) VE table based on combined fueltrim data. If you do not plan to run speed density mode with your car, then this page is completely useless to you and you should ignore it. text/html 2024-03-15T11:16:42-04:00 https://www.ecmtuning.com/wiki/v3firmwarechangelog?rev=1710515802&do=diff ECMLink (V3) Firmware Changelog Firmware upgrade page This page is ONLY for the full V3 package. If you have V3Lite, you need to refer to the V3Lite Firmware Changelog instead. 3.46.226 (07/04/2023) * Fixed relatively obscure bug that could stop engine operation on MAF-based cars if the MAF signal was lost text/html 2024-03-15T11:16:42-04:00 https://www.ecmtuning.com/wiki/sditems?rev=1710515802&do=diff Overview This page is only intended to list out the basic items required to run speed density with ECMLink. If you need help with configuring ECMLink for SD operation or you want to understand more about SD, the following pages will be more appropriate for you. text/html 2024-03-15T11:16:42-04:00 https://www.ecmtuning.com/wiki/prodcompare?rev=1710515802&do=diff Product comparison Although we no longer offer V3Lite for the DSM platform, this page is still useful for those that already have V3Lite and may be considering an upgrade to full V3 or for those that are considering the EVO1-3/GSR/RVR package (which is effectively V3Lite). This page summarizes the differences between these two versions. text/html 2024-03-15T11:16:42-04:00 https://www.ecmtuning.com/wiki/whyinitialsettings?rev=1710515802&do=diff Why does the ECMLink order form ask for settings? We get asked this question fairly often, so I figured it was time to put up a page about it. The basic question is asking why we have a set of “initial” settings (injector size and MAF type) on our text/html 2024-03-15T11:16:42-04:00 https://www.ecmtuning.com/wiki/sdquickstart?rev=1710515802&do=diff SD Quick Setup Guide We get asked fairly often “what do I need to run SD and how much does it cost”. The full answer is pretty complicated because there are a number of different sensor options and input configurations available to you to choose from. This page doesn't cover all that. The purpose of this page is to give you a quick start guide to the text/html 2026-05-17T10:55:16-04:00 https://www.ecmtuning.com/wiki/v3summary?rev=1779029716&do=diff ECMLink (V3) Feature Summary ECMLink (V3) is an all-in-one datalogging, real-time tuning, and reflashing package for your 1990-1999 DSM. On this page you'll find a quick high-level summary of the major features in ECMLink. If you need more details, feel free to text/html 2024-03-15T11:16:42-04:00 https://www.ecmtuning.com/wiki/v3litescreenshots?rev=1710515802&do=diff ECMLink (V3Lite) Screenshots V3Lite is a more basic (but less expensive) version of our standard package. However, it's still fully capable of doing all the basic engine management you need to get started. You can get more details on what's included in each version off our text/html 2024-03-15T11:16:42-04:00 https://www.ecmtuning.com/wiki/v3screenshots?rev=1710515802&do=diff ECMLink (V3) Screenshots As required by internet law, here are some screen shots of the ECMLink application in use. ;-) Of course, you can click on the image thumbnail to get a better (larger) view. This is by no means a user manual. The ECMLink application includes a number of help pages built in. This page is just an overview to get a quick general idea of what the application is like. text/html 2024-03-15T11:16:42-04:00 https://www.ecmtuning.com/wiki/sdoptions?rev=1710515802&do=diff Speed Density Options and Configurations One question we keep getting goes something like “how much is SD” or “what do I need to run SD”. First, pricing information is listed on our website. So that one's easy once you've decided which items to order. text/html 2024-03-15T11:16:42-04:00 https://www.ecmtuning.com/wiki/sdhose?rev=1710515802&do=diff Speed Density - Vacuum Hose Considerations In testing various speed density installations, we've noticed that the vacuum hose configuration leading from the manifold to the pressure sensor can be an important consideration in getting throttle response right. text/html 2024-03-15T11:16:42-04:00 https://www.ecmtuning.com/wiki/ethanolsupport?rev=1710515802&do=diff Ethanol sensor support page Ethanol sensors report ethanol content as a frequency from 50hz to 150hz corresponding to 0% and 100% ethanol. ECMLink can be configured to use the ECU's MAF input to read an ethanol sensor's output and then adjust the fuel mixture accordingly. ECMLink can also be configured to interpolate between the MinOct and MaxOct timing and fuel tables based on ethanol content. text/html 2024-03-15T11:16:42-04:00 https://www.ecmtuning.com/wiki/howto?rev=1710515802&do=diff How-To's This page is a collection of how-to's from those that have-done. Hardware * 2G plug wire swap - Installing DSMLink in a car without a '95/'96 style cam angle sensor * Clutch cut wire on a '90 DSM - Installing a clutch cut (NLTS) wire in a 1990 DSM * Basic "nitrous" controls - The basics of wiring up a solenoid to be control by DSMLink's text/html 2024-03-15T11:16:42-04:00 https://www.ecmtuning.com/wiki/ecmlink101?rev=1710515802&do=diff ECMLink 101 This page is intended to orient the new user to the ECMLink system and, to some extent, ECU tuning concepts in general. If you just received your package and really have no idea where to even start, this is probably the page for you. If you already know how to tune an ECU and already understand basic engine operation and how to use the ECMLink application, then this page may still have some useful tips and links to other pages that you may find of interest. So still give it a goo… text/html 2024-03-15T11:16:42-04:00 https://www.ecmtuning.com/wiki/gmmafcablemod?rev=1710515802&do=diff GM MAF Cable 2.0 This page documents a modification to some of our earliest GM MAF cables that powered the GM MAF off sensor ground provided on the factory MAF connector. Powering the GM MAF directly off the sensor ground produces a voltage offset on all the other sensors connected to sensor ground! text/html 2024-03-15T11:16:42-04:00 https://www.ecmtuning.com/wiki/evocpuissue?rev=1710515802&do=diff EVO 1-3 CPU Issues With the help of some friends in Australia, we've identify a unique problem with the early EVO ECUs and our V3Lite flash modules produced in 2009. The symptoms include the random changing of various ECU configuration settings (the large speed density table is most likely) and the inability to perform any direct access updates. text/html 2024-03-15T11:16:42-04:00 https://www.ecmtuning.com/wiki/whatdoineed?rev=1710515802&do=diff "What do I need to get started with ECMLink?" We get asked this question a lot. And like many others before it, it's a simple question with a complicated answer. It always boils down to “well, it depends”. Simple stuff - the basics What does it do? text/html 2024-03-15T11:16:42-04:00 https://www.ecmtuning.com/wiki/externalsensorinput?rev=1710515802&do=diff Available ECU inputs Note that the following lists out all the available inputs on the 1G and 2G DSM ECUs. Most of these have special cases associated with them to be useful as a general purpose analog input. The most freely available inputs are the EGRTemp input on a 1G ECU and the RearO2 and MDP inputs on the 2G ECU. The rest have special cases to consider with them. Some may even require a text/html 2024-03-15T11:16:42-04:00 https://www.ecmtuning.com/wiki/failing-map?rev=1710515802&do=diff Identifying a Failing MAP Customer's engine was dying while cruising down the road and you can see very little response in engine RPM to modulation of throttle. The cause appeared to be a failing MAP sensor resulting in lean mixture (speed density). The smoking gun,