Author Topic: flyback change from V3.2 to V3.8??  (Read 5320 times)

Offline smurfinator

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flyback change from V3.2 to V3.8??
« on: May 13, 2016, 11:35:40 pm »
I initially set up my flyback wiring in 2005 or 2006 using the phatbob guide for audi ABZ bosch injectors.  That ECU died and I just put in a new ECU with internal flyback.  My fueling is all strange now so should I remove the old flyback wiring (no components, just wires) or change an injection code parameter?
Audi ABZ 4.2 V8 in 1993 90 quattro
TTV 60-2 flywheel and cam sync
firmware: 1.2.20

Smurf blue (BMW Laguna Seca), hence the name!

Offline jrussell

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Re: flyback change from V3.2 to V3.8??
« Reply #1 on: May 18, 2016, 07:41:51 pm »
Can you elaborate on your previous setup? Did you have the 30V flyback diode external to the ECU in the harness? If yes, then remove that diode and connect the injector +12V right to ec36-pin23.

If it was some other setup (The phatbob guide explained internal and external flyback diode if I remember correctly), explain and we can help.

Thanks,
Jason
VEMS USA - Located in beautiful Burlington, Vermont
1988 RX7 Turbo

Offline smurfinator

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Re: flyback change from V3.2 to V3.8??
« Reply #2 on: May 19, 2016, 09:58:05 pm »
I had no external diode, just the wire going from 12+ back to pin 23.  The reason I ask is that my fuel is WAY off with the new ECU - like 30% lean.
Audi ABZ 4.2 V8 in 1993 90 quattro
TTV 60-2 flywheel and cam sync
firmware: 1.2.20

Smurf blue (BMW Laguna Seca), hence the name!