I've done this conversion myself and any year b5.5 passat works, at least in the north America market. I bought an auto '04 harness at one point and it was basically identical to its equivalent b5 a4 harness.
I don't know, I wouldn't be surprised if the ECU had different size/memory addresses to AWM either. But haven't investigated dumps of it yet, ECU itself is least of my concern tbh.Never heard of AWT, what are the specifics? (power/tq, wideband or not, vvt or not, etc) As far as I know all these variations are basically identical electronically with the biggest difference being the ECU tune.
The wiring should be easy enough to bypass. It's the pedal box you need for the dbw unit you'll be missing using an auto
Following notes from memory:
ECU
Yep, any ME7.5 wideband ECU will work, i got one from a Golf and one from a Skoda Automatic!
ENGINE HARNESS
Certain passats have one that mostly drops in, not sure on the date range though, i can look this up. You need to move some pins around for the power feeds and add one extra feed on the car side of the harness. The harness i have is a narrowband one, so i need to add some extra wires for the lambda.
PEDAL BOX WITH DBW ACCELERATOR
Yep, or you can use a prefacelift S4 sensor on the stock pedal box.
PEDAL TO FUSEBOX/ECU LOOM
Yep, white plug from ECU box and connectors for clutch, brake and throttle body.
THROTTLE BODY W/BOLTS (Does this match manifold intake size ??)
Yep, same size
MAF SENSOR + HOUSING (TT/S3 i believe will work)
If you use a wideband 2.5" one it will drop streight into the airbox and is good for 270-280hp IIRC. If you want more power you can use the TT/S3 one and hack the box around.
MAP SENSOR (will a B6 FMIC intercooler or Passat one with sensor location fit the A4 B5 ??)
You can get little bits of pipe with a sensor boss welded in.
ENGINE CONTROL RELAY (what no or part number ?)
Not sure on this, my loom came with a relay
02 SENSORS
Wideband front O2 required. I'll be coding out the rear one.
N112 & N249 (i belive these just need to be plugged in for the ecu to see they are there)
You can just resistor these out AFAIK.
I've got everything i need to do my car, i just need a base map written for the ECU so it matches my combination of MAF, injectors etc.
It will probably be similar enough to work. AWT harness is wideband so will be different to an APU one anyway.
Hi ..
DO have all the listed, from AWT engine ..
These loom and wiring etc is same across the 1.8T
Thanks