VAG coil conversion guide
I decided to convert my CA18det s13 to VAG coils and as I like to do things myself i set about finding out what I needed, there is alot of conflicting info. So after getting mine up and running smoothly I will pass the info on.
I am running a standard ECU with stage 3 chip HDEV.
Its cheap and fairly straight forward if you are handy with a soldering iron.
Parts Required.
Yakazi male plugs
1 off 7122-1844-40 4 pin
2 off 7122-1864-40 6 pin
sourced these from Auto-Click UK cost £15
VAG plugs female
4 off pre wired
sourced from E-Bay cost £17
Coils
There are two main types off VAG coils, short type and R8 type. I went for short type as I wanted to retain the standard look. The cover does not fully go down it needs to be spaced up by 6mm ( helps cooling ). You will also need to decide on coil type BEFORE making the loom as they are wired differently.
036 905 715F short type tfsi
dwell time 1.3ms
PIN
1 ECU ground
2 ground
3 +12 volts
4 ecu signal
0221604 115 long R8 coil
dwell time 1.8ms
PIN
1 +12 volts
2 ecu ground
3 ecu signal
4 ground
Wiring
i used 2.5 mm high temperature wire. soldered joints and heatshrink
wiring guide to follow shortly..
Drawn by cad.
https://flic.kr/p/2e61Hvx