1991 Audi 100 (2.3L/5cyl 2 valve NF engine.) originally with KE Jetronic (weird, many older engines had proper fuel injections; this might be the last KE-Jetronic engine built)
- fuel rail fabricated
- will be kept NA (normally aspirated). 139 Hp ? Smooth and clean running and fuel economy is main target (not power)
- factory compression ? Around 9.6 ?
- KE jetronic => replaced with VEMS (speed density setup, 115 kPa MAP sensor)
- owner planned to "alien-log" the factory ignition advance table. However, there is almost certainly no value in that table. Should not be big deal to make a better igntune (for RON95 fuel). Probably the orig is tuned for pessimistic lower RON fuel
- ditributer kept for now
- either 35pin factory connector kept, and VEMS made with frontplate for that connector '''NOT feasible, because one connector is for ign, other for fuel, better cut off...'
- => wires cut and EC36 + EC18 connector crimped the way to go
- new harness branch: 12V + 4 wires from EC18: for LSU4 wideband sensor
- there are a couple of extra wires, eg to the air filter (originally flap type air-mass / air flow sensor; not needed)
If tuned in August, might need some tune adjustment in the winter.
Sensors
- MAT ?
- WBO2 will be added
- knock ? Does the block have provision for 2 bolts ?
A/C
compressor is in, but was not operated for some time. Needs gas, most likely (or was it washed and changed to R134A ? dunno)
Carbon canister
Trigger
- primtrig: 5 window HALL (on camshaft, in distributer)
- sectrig: HALL (not used for now)
Notes
Factory harness schematics:
https://www.vems.hu/~vemshu/files/MembersPage/MarcellGal/Audi/KEjetronicOut/
Most appropriate is apparently [Audi100 90.pdf p4]
old:
injector Bosch 280 150 716 (donation from some BMW)
cc/min ?
recommended cranking pw at 20C = 10 msec ?
- Or req_fuel for VE=100 or VE=200 ?
35 pin Pinout
- 1 white-grey ICU5
- 2 brown-white AFP/2
- 3 black-red CLT NTC/2 temp sensor (coolant out from cyl head)
- 4 red-yellow KJET pressure control
- 5 red-white KJET pressure control
- 6 blue-green EGR TEMP sensor (?)
- 7 ...
- ...
- 14 black-green Fuse 26 node15, ECU 12V ?
- ...
- 18 GND
- ...
- 35 brown-red GND