Audi urS4 1992 with the AAN engine
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My goal is for now:
- use all original sensors
- replace the MAF with a MAP
- replace the original Lambda with a WideBand Bosch LSU4.2 (7200) if possible
- make my own electrical loom/harness for the engine, using VAG OEM connectors and Econoseal connectors on the Vems.
- Make the engine run nice and good.
- make it work with COPs from 1998-2007 VAGs, 06B905115L
- Q: is that power-input ? (not logiclevel) ?
- A: they are logic-level, 5v (not sure if its postive (+) though)
- Guide for conversion from original POS/coil to COP here:
- http://www.bonnquattro.se/aan/18tCoilPackConversionInstructions.pdf
Next goal:
- switch exhaust header
- another turbo
- larger injectors
- another WasteGate
- switchable fuel maps
What I know:
- I will buy the assembled vems with econoseal connectors
- I need 5 logic outputs for the ignition, would like a 3+5 version
- The extra flyback 30v diode seems like a good choice
- I will buy a wideband lambda
- I will buy a EGT sensor
- I want the LED (4x20?)
- I want a special lambda display
- EGT and knock sensors(would like to use the stock knock sensors)
- onboard MAP sensor 400 kpa
- I will buy some econoseal connectors 18+36
- Primary trigger Is VR
- Secondary trigger would be "audi trigger"
What I dont know:
Q: Shall I order 2+6 version, what can I use the 2 high current outputs for ?
A: Lots of things. Relay, solenoid, NOS, ...
Q: How about firmware and sensors, do I need to compile something myself ?
A: no need to compile anything. See VemsTune
Q: I suppose I should choose PS2 connector as well
A: useful eg. for wheel-speed input (but we can connect PS2 clock signal to an unused pin as well
VEMS info (I have bought a VEMS that came with this info:)
Board_version=v3.3
Serial_nr= 2267
pump-= 4.05V
wbo2_pump_pw_zero=0x64
wbo2_nernstdc_target=0x87
pump+= -1.0mV/200 Ohm
AREF=4.9V
(C103=1nF, no D100)
Other project info
I have bought a engine loom from a -02 VW passat that will fit the COPs.
Purchased a used WBO Bosch LSU 4.2 7090/91 as per below.
Will start making the new COP work with the OEM ECU to begin with.
Time frame:
2016-01-18
I have begun installing this now. I will make an adapter cable to fit the Motronic 55 connector at first. When I have it all working I will make a new wireloom. Maybe I will wait until nex engine takes it place in the car.
I started out connecting the Vems on bench to my PC so I could update FW. It turned out I needed to "lock" the CPU with direct ISP programming. It worked nice but now I cannot update bootloader further because of "access denied". I have contacted vems ... Sorry, but for some unknown reason we don't see that... Can you repeat via [shop contact] ?
I want to have latest fw before I begin. I have also put together a cable for the LCD display.
Questions