MembersPage/MacB (2013-08-19 12:18:26)

I´m planning on installing a VEMS unit on a stock 89 Porsche 911 Carrera 3,2.

MembersPage/MacB/Config

Plans

- TDC sensor is sensing 1 pin on flywheel (don´t know yet how many degrees before TDC). Will likely need to have (access to) a strobelight to verify all is well.

- no cam or distributor sensor (with auditrigger camHALLinverter the EC36/13 input must be grounded to allow the crankhome-VR pulse to go through).

- stock NTCII at cylinder head #3

- AFM (flap type) will be removed, will use TPS instead (exchanging stock idle and WOT switch)

- idle control valve is the "silver cigar" BOSCH thing, two wires to ECU, so PWM

- IGN distribution will remain untouched in first step, stock coil, stock distributor

- stock fuel injector BOSCH 0-280-150-158 low-Z (2-3 Ohms)

- wideband O2-sensor will be used intead of stock narrowband

- no MAP. It would be easier to tune with a MAP sensor, but also possible with TPS, with more work

- no airtemp sensor planned. The MAT sensor is almost a MUST (in a normally aspirated engine MAT sensor can be an NTC in the air-filter, very simple and cheap, just make sure the engine will never inhale it)

- Firing order is 1-6-2-4-3-5 for the Carrera

- wiring should remain mainly stock with stock-DME-connector and only additional wires for wideband, TPS and so on

- planning to use alpha-N only

Trigger: div-by-43

So number of teeth on wheel becomes 3 (carrying over what I see on the AUDI configs) confirmed!

First trigger tooth will be 0

Next trigger tooth 1

Angular width of teeth is 120°

reference tooth is 0-5-4-3-2-1

"Auditrigger" option for the ECU.

Here is what I ordered:

1 x Wideband connector

1 x Econoseal18-Wire side

1 x EconoSeal36-Wire side

1 x ECU VEMS V3

- 1-wire interface: no

- EGT input: no

- Flyback: LowZ active flyback 8ch

- ignition driver: 8

- Knock input channels: 0

- LCD connection: no

- MAP connection: offboard(electronic)

- mounting-style: no-screws

- primary_trigger: EC36/27 VR

- PS2 connection: no

- secondary_trigger: auditrigger w/camHALLinverter

- Service: normal

- withSDcard: no

Other stuff:

TPS from E36 (Hella): 6PX 008 476-111

WBO2 (Bosch): 0 258 007 351

Some connectors etc.