Hi, as a new member I am attracted to the Technical Q&A. I have searched for Motronic 2.7 pinout but was disappointed to find links that did not exist and no definitive answer to similar request to mine for this pinout. If it does exist would someone kindly post it, as it would help me greatly to rewire a 355 engine I have with currently only the bare minimum of ECU wiring to run the engine. Judging by the number of similar quests over the years it would be greatly appreciated by many members. I have similar pinouts from other manufactures but it would be a case of trial and error with a scope and multimeter to figure out the differences. Has anyone achieved this? Looking forward to a reply. Steve.
Hi Jeff, Thank you for the reply. I have three volumes of F355 workshop manual printed in loose leaves. The third volume has some wiring diagrams in section L but I see now pages L32 to L37 are missing I have searched for All Ferraris as you suggested and found Ferraridatabase.com and have downloaded their manual and am now printing my missing pages. Thank you for the tip, I should have looked harder and not believed this info was hard to obtain and not in the manual. I am building a P4 replica with the 355 engine and will be fitting a megasquirt ECU to eliminate the mass flow sensors, fit inlet stacks and have control over fueling and ignition. In the meantime I want to be able to run the engine and that means wiring the Motronic 2.7's. The job will be a lot simpler now so thanks again. Steve Bradford.
Hi Steve, being in the same situation as you! Building a P4 replica with 348 engine and Motronic 2.7 and would need wiring informations, Is your engine running in the meanwhile?
Opel/Vauxhall 2.0 Turbo used Motronic 2.7 in C20LET engines, ecu was very similar to Motonic 2.5, which was used in C20XE engine. As far as I know Bosch ecus they will be very simialr. If You will give me number of ecu (0 261 XXX XXX) I will try to find detailed pinout. ps. Motronic 2.X series are very crapy ECUs, maybe You should think about using some stadalone ecu, it will give You better performance, sluggish throttle response and better fuel economy. Best regards Kuba
Hi Fear.Engineer, could you please find the pinout for my F348 S /Motronic 2.7 ECU ECU Number is: 0261 203 327 What standalone unit I could use in my car? best regards, P4AntonLM
Hello Anton. I will try to find pinout for your ECU. I need to do a little "pinout hunting" in my documentation. I will do it tommorow. About standalone ECU for V8.... First and most important thing... Avoid AEM and GEMS ecu. They are useless. Choosing ecu depends on how much money You can spend on it. The most expensive option (but giving maximum possibilities and features) is Pectel SQ6. It can do fully sequential ignition and injection on V8, it can drive 8 coil without need to use expensive and quite problematic ignition drivers (like MSD or other stuff). It can use 2 widebad sensors (without need to use external controller) to provide maximum engine safety and best performance (also extremly well fuel economy), it can work with two separate knock sensors (for engine safety). And it does lot of other options like launch control, traction control (based on DBW throttles), CAN support (for dash display), ethernet connection. But it's quite expensive. Other cheaper option it LINK Ecu or Vi-Pec ECU (Vi-Pec is rebranded Link ECU). They're good ecu's with lot of motorsport features. They have greate support for alpha-n fueling and ignition (best for naturally aspirated engines - hahaha throttle response will breake your neck ) The cheapest (but not the worst) way is to use VEMS ecu. It's opensource project, but it gives a lot of nice options to use Remeber that standalone ecu will give you some "show and circus" options like: - launch controll - [ame=http://www.youtube.com/watch?v=eS1EAk8MXQE]KTR Gen90 ECU by Koko-tuned.pl - YouTube[/ame] - nice rev limiter - [ame=http://www.youtube.com/watch?v=it6YlSa55cY]3000GT VR4 TwinTurbo by Koko-tuned.pl - YouTube[/ame] If You will give me more details about your car (street car, time attack car, street racing car) I will help You with choosing best option ECU for your car. Best regards Kuba
Hello, I was surfing around trying to find some more info on the Motronic 2.5 ECU that my Monidal t uses and found a couple of documents repeated on different Opel forums, one that shows some general info about the ECU and one with the pin out. Perhaps they are valid for the 2.7 as well...? They are all marked copyright Equiptech, there seem to be many companies with that name, but I only found one that deals with car ECU's (In South Africa). I have mailed them to inquiry if the files are theirs and if I would be allowed to post them to the forum. The files are named "Opel_Motronic2.5.pdf" and "m25.pdf" in case you already have seen them... Cheers, Niclas
Switch to a Motec unit. Much easier, lots of documentation and great on-line help. This is what our 358 race car uses. Some versions require an ignition expander.
Motec is also good option, but avoid early M4. And check what options are unlocked in current unit. Best regards Kuba
I have a M48 with a ignition expander for the 8 individual coil packs on an old Australian mucsel car. Fantastic stuff with great customer support. I think that the M800 would better suit. Only downside is I had to pay for an upgrade for continued Lambda use so I had to send back to have a code !set! In the ecu for this. Motec is great stuff from a personal experience. Good luck
Fear.Engineer, thank you for replay. Sorry I am out for a job, can`t do anything on my project yet. Thx. Anton
Hi Anton, Thanks for the reply, I have the pinout info for the Motronic 2.7, I traced the wires through the loom and correlated them with other manufacturers wiring diagrams from Autodata. I have my 355 engine running on the temporary loom I have wired. Longer term though I propose to use a MegaSquirt ECU for both fueling and ignition in order to eliminate the air flow meters so inlet stacks can be installed. Engine load will be detected by throttle position. One of my sons has installed a MegaSquirt ECU in his V8 TVR Chimera with good results. It is a cheap option that is well supported, easy to repair if anything goes wrong, has self tuning ability and is expandable for adding the extra trick functions. And most importantly you can tune it yourself off a wide band O2 sensor. Where are you with your build? Steve.
