The TwEECer -- EEC-IV user programmable module

The Best of Breed in EEC Performance Tuning

TwEECer RT with Real Time Data Logging

Requirements

A desktop PC or laptop with a USB port or USB 32bit CardBus card [make sure it is cardbus as there is no such animal as a 16bit USB PCMCIA card]
Win98SE, Win2K or WinXP Pro (we do not support Home editions)
24Mb RAM for Win98 and 64Mb RAM for Win2K or XP Pro
At least 20Mb of hard disk space for the software, custom calibrations and logfiles

This list may grow or be completely revised, but for now these are the expected requirements. Data from the TwEECer RT will be retrieved at 10sps [samples per second] and can be recorded for playback and/or just viewed in real time. Below is a list of many of the variables which are available and are read directly from the EEC. You can log up to 16 of the items listed below, in any given logging session.

ET - Our elapsed timer
VBAT - Battery Voltage
BP or MAP depending on year model
FSTAT - Fan Status
LOADPCT- Percentage of max Load
LOAD - Actual Load (VE)
HEGO1 - Left O2 Voltage
HEGO2 - Right O2 Voltage
DESRPM - Commanded Idle RPM
ISCDC - Idle Speed Control Duty Cycle
SAFTOT - Total Spark Advance
MAF - MAF flow in Kg/hr
MAFV - MAF Voltage
N - Engine RPM
TP - Throttle Position (Volts)
TSTAT - Throttle Status (Closed, Part or WOT)
LS - Loop State (Open or Closed Loop)
PW1 - Injector Pulse Width in ms [Left bank]
PW2 - Injector Pulse Width in ms [Right bank]
LAMBSE1 - Short Term Fuel Trim [Left bank]
LAMBSE2 - Short Term Fuel Trim [Right bank]
KAMRF1 - Long Term Fuel Trim [Left bank]
KAMRF2 - Long Term Fuel Trim [Right bank]
ACT - Air Charge Temperature
ECT - Engine Coolant Temperature
VS - MPH (Vehicle Speed)
Injector Duty Cycle - Calculated from Injector PW & RPM

AODE specific Items:

TOT - Transmission Oil Temperature
TCCLK - Torque Converter Clutch Lock
EPCPRES - Commanded EPC Pressure
GEAR - AODE Gear in use
DESSLP - Desired Clutch Slip

Please Note: The above list of variables is aggregate for all processor families, they are not available for all processors.

Optional Suggested Hardware

Optional data that can be logged such as Air Fuel ratio, Boost or Fuel pressure will require additional hardware depending on year model vehicle and which items you wish to log. On many EEC-IV based vehicles the EVP or EGR Valve Position sensor can be used as an analog input (measuring 0-5volts) kind of like a Digital volt meter. The output of many sensors is scaled 0-1volt or 0-5volts, including most Wideband Controllers used to measure accurate Air/Fuel ratios. Ford uses a Narrow band HEGO (heated exhaust gas oxygen) sensor which can measure Air/Fuel accurately only at Stoich or 14.7:1.

Wideband controllers can measure from 10:1 to 20:1 Air/Fuel and when tuning a super or turbo charged setup a wideband is required, if you want to keep the engine together. EEC-V vehicles do not have this extra input available so an external logger is supported and available for VERY reasonable cost. The DataQ DI-194 gives the end user 4 external channels to log additional items.

Recommended wideband controllers are the Innovate LM-1 and the PLX Devices line of products. Both companies are VERY reputable and stand behind their products as we have heard nothing but good things from our customers who have been using these Wideband controllers.