ACCEL DFI Gen 7+
Originally posted by Scott231
The Accel DFI Generation 7+ is THE MAC DADDY of affordable fuel management systems right now.
DITTO THAT X 1000!!
From the ACCEL site:====================
Feature: Water-resistant enclosure and main harness connections offer options in mounting location for the Gen VII Electronic Control unit.
Benefit: Can be mounted in the passenger compartment or under hood.
Feature: New electronic circuitry design with noise-hardened protection
Benefit: Each circuit is protected against damage caused from short circuits or wiring that rubs through the insulation in the harness, eliminating costly repairs and keeping the smoke inside the ECU where it belongs.
Feature: All-new CALMAP 2002 PC windows-driven calibration software
Benefit: Provides fast, user-friendly access to all fuel and ignition related tables
Feature: Software Selectable Ignition Compatibility eliminates the need to have your ECU modified by the factory because of ignition upgrades . The Gen VII ECU can understand and process signals from GM HEI and Opti-Spark Ignitions, Ford Thick Film Ignitons, Fixed Advance Magnetic Pick-up ignitions, (both Flying Lug and Flying Magnet), and Fixed Advance Hall-Effect ignitions.
Benefit: Possibly more important, if your Gen VII controlled LT-1 is having troubles, there is a way to check if your Gen VII ECU is related to the troubles. It is possible to borrow a Gen VII ECU from your buddy's Mustang, use CALMAP 2002 to download your entire LT-1 calibration into his Gen VII ECU, and now you have another ECU that will run your LT-1.
Feature: New Volumetric Efficiency-based fuel tables
Benefit: Offers increased resolution and control. Volumetric Efficiency tables can be adjusted a single point at a time, a portion at a time, or completely increased or decreased by a percentage with a few strokes of CALMAP 2002 software. This vastly improves time needed to calibrate your Volumetric Efficiency map. (Volumetric Efficiency maps are the main fueling tables in CALMAP 2002).
Feature: CALMAP 2002 offers a Volumetric Efficiency (Main Fueling Table) Estimator.
Benefit: This function allows the starting point of your Volumetric Efficiency table to be calculated by CALMAP 2002.
Simply answer the questions CALMAP 2002 asks you about your engine, and CALMAP 2002 will give you a calculated Volumetric Efficiency Table as your starting point.
No more "wild guesses" to determine start-up fueling.
Feature: Software Selectable Fuel Injection Modes.
Benefit: With CALMAP 2002 the Gen VII ECU can fire the fuel injectors in the following modes. Sequential, Bank-to-Bank, Batch, or Staged Batch. Sequential is only recommended if the Gen VII ECU is provided with a cam position signal.
Feature: In Sequential mode, CALMAP 2002 allows the adjustment of fuel injector timing in relation to cam position.
Benefit: Increased power output, lower emissions, and improved driveability.
Feature: Individual Cylinder Fuel Trim is possible in all modes of injector operation.
Benefit: This function is used to compensate for intake manifold distribution inadequacies, poorly matched injectors, or a combination of both.
Feature: Gen VII has Self Diagnostic Capability with a provision for a Malfunction Indicator Lamp.
Benefit: CALMAP 2002 will display what the trouble code is and what action the Gen VII ECU is taking because of the trouble being sensed. A Malfunction Indicator Lamp can also be incorporated which will flash the number of the trouble code.
Feature: Every Gen VII ECU has the capability of operating up to 3 stages of Nitrous Oxide.
Benefit: Gen VII can calculate the amount of fuel enrichment for each stage, and allows the end user to trim fuel enrichment and ignition timing retard throughout the RPM range that the nitrous will be energized.
Feature: New graphical "on-line" high-speed data recording for up to 30 minutes of data recovery.
Benefit: Data recordings can be replayed in real time, can be stepped through point by point, and can also be replayed in the Volumetric Efficiency table.
Feature: Every Gen VII ECU has internal altitude sensing and compensation capability.
Benefit: This function improves power, driveability and fuel economy on vehicles when they are driven to different altitudes.
Feature: "Wide Band" O2 capability.
Benefit: This option allows closed loop control at all conditions and allows the end user to select the air/fuel ratios that are desired at different rpm/load points.
Feature: Gen VII offers two separate rev-limiters. One is an ignition rev-limiter, the other is a fuel shut-off rev limiter.
Benefit: The ignition rev-limiter can be wired through a trans-brake or line-lock button to act as a starting line rev-limiter. Both rev-limiters are adjustable in 50 rpm increments.
Feature: CALMAP 2002 offers "Help" screens.
Benefit: If a user is unsure of a screen they are looking at, they can simply push the F1 key and a verbal description of the screen being viewed will appear.
The Gen 7+ System not only provides precise control of all aspects of fuel delivery and ignition timing, but also offers features and benefits that have never been available from a programmable engine management control system before.
This system provides enhanced idle air control including preset control values for most engine combinations, and improved fueling control for street and race applications.
The 2003 Gen 7+ System provides crisper or heightened throttle response for single and multiple throttle body induction systems, improved cold weather start-up, and enhanced communications for faster program file uploads and downloads.
Other features include enhanced knock control, enhanced acceleration enrichment management, and improved O2 control for Wide Band and Standard Feedback Systems.