seb,
My conversion isnt half as far along as yours, but im kind of sticking with Jetronic. There are a few ways to do this conversion:
Option 1:$$$ The ideal L-Jet setup on a 3.0 would be to keep all the stock 2.5 injection stuff and use bigger injectors and a BMW AFM. Then set mixture with the AFM adjustment by reading the O2 voltage.
Option 2: You can use all the stock 2.5 stuff and adjust the AFM spring tension to get the correct mixture without doing anything else. I have not done it on a 3.0 but I suspect it will work and it will definatly work at lower and mid range RPM so you can at least get the car going this way.
Option 3: Have your 2.5 ECU changed into a 3.0 ECU. Alfa Heaven does this and there are probably others that do it too.
Option 4: Use a small resistor to change either the coolant or air temp values the ECU reads. You can even use a variable resistor to make adjustments from inside the car.
Option 5: Get a 3.0 ECU and install it, you may need to change the entire L-Jetronic wiring harness. This is not the way I would go. Too much trouble and expense for no benifit.
Option 6:
(The way im going) Purchase a BMW AFM, ECU, and injectors. Use the AFM spring and 02 sensor reading to get the mixture correct. Personally MS and Motronic conversion scare me, wayyyy oovver this guys head
![Shocked :shock:](./images/smilies/icon_eek.gif)
. I just purchased a 164 and the motronic is a big step above L-Jet. This way i get to keep my simple L-Jet, and only spend $150USD for the ECU, AFM, and injectors.