Over the course of 2007 I had the opportunity to do Beta testing for a company out of California, OBD2ALLINONE. They are the creators of MEFIBURN an application loaded on your laptop designed specifically for the MEFI controller. This package will upload and download tunes to the MEFI1, MEFI2, MEFI3, MEFI4, and MEFI4B ECU’s. The hours of work put into the product has greatly reduced the time it takes to read and modify the MEFI ECU controller.
I have worked with a variety of ECU tuning packages over the years and find it to be very complete. The tuning user interface provided by TunerPro is very intuitive. The GUI takes you right to the heart of the matter when it comes to changing parameters on the MEFI controller. The data maps are easy to read and modify. All switched parameters are in simple terms. You also have the option to edit in HEX if you like but who would want to. ScannerPro is included in the package for monitoring and logging a variety of variables within the controller for analysis.
Bob and Ken have spent many hours putting together a package at the fraction of the cost of traditional tools. It includes the necessary XDF and ADX files for your MEFITUNING.
To tune your MEFI ECU your must understand the principals of fuel and spark management. Like any other EFI ECU there are many data points to consider. So you might find it prudent to solicit the help of someone familiar with MEFITUNING. By having the tool readily available you can easily exchange data with your tuner adding flexibility to your boating style.
Product Description
The Marine EFI (MEFI) Scan & Tune system allows you to download the internal MEFI programming to your PC or laptop with our MEFIBurn program, change the operating parameters of the controller, and then reprogram the controller with your modifications. It also allows you to view all of you sensor systems in real time and log the data for later viewing. Since 1992 the GM Delphi MEFI ECM Controllers have been used in a wide variety of applications, including: Marine - MerCruiser, Indmar, and many boating applications Off-Road - Sand rails, race cars, industrial engines, and more Crate Engines - Ramjet 502, Ramjet 350, LT1, LS1, LS2, LS6, LS7, Ecotec The MEFIBurn Scan & Tune package comes complete with everything you will need to interface to generations of the MEFI controllers: 1) A USB - MEFI Interface Cable. 2) A CD-ROM containing all the software you need. 2) A Step-By-Step set of instructions that will show you how to get up and running quickly. The following table will help you determine which MEFI controller you have. On the bottom of the controller is a sticker with a part number. The GM part numbers and MEFI ECM's are listed here: GM Part No. MEFI Type 16159919 MEFI-1 16189069 MEFI-1 16220371 MEFI-1 16234539 MEFI-1* 16210729 MEFI-2 16237009 MEFI-3 16237019 CEFI-3 16236999 MEFI-3* 12569494 MEFI-4 12575479 MEFI-4a 12584052 MEFI-4b 88962717 MEFI-4b 88962718 MEFI-4b 12597744 MEFI-5 12607802 MEFI-5a *Used by MerCruiser Scanner Pro is used for doing engine monitoring, data logging, and malfunction trouble code reading. We have developed MEFI 1, MEFI 2, MEFI 3, and MEFI 4 definition files that allow you to take full advantage of the features that Scanner Pro has to offer. Our custom-designed interface cable allows you to do real-time monitoring and data logging of the MEFI engine controller.