[brakthru]

From my experience, the msd81 seems to be a better dme. Car seems to process information more quickly. Car more responsive.

[leandromartini]

Hello

I have a BMW 335i 2007 last week it had faults 30BA accompanied by another one too, thanks to the forum I found out that they were the mosfets, I did the repair it took two days and it presented the error again I discovered that I had a problem injector, replace the injector and the mosfet burned again but the car is still in only one bank of cylinders, only with the error 30BA without additional errors, I already checked the mosfets but I can't find the problem.
what will be happening?

Thanks again for another help from you guys!

[Zakov335i]

Originally Posted by brakthru

Hey man, I feel your pain. My injector 1 mosfet blew 3 times. I had no choice but to get a used MSD81 DME. I went with N54 Exclusive. They are excellent! I sent them my CAS and key. They have MSD81 on hand and programmed it. They overnighted me everything back for small additional shipping charge. All I had to do is plug it in and voila! Everything went well. Great customer service and communication.

Yeap, it happend to me again! I flash new map to my MSD80 and mosfets are fried again! But guess what? I swaped another MSD80, and was fried at the same day! I have enoug... Just swaped for MSD81.

[littlecreatures]

I have 30BB, code still comes back immediately even after disconnecting 4, 5, 6 coils and injectors. Mosfets test fine. No water damage. Is it a fried DME? Anything else I can fix on this? (Someone mentioned power supply?)

[GSB]

Originally Posted by littlecreatures

I have 30BB, code still comes back immediately even after disconnecting 4, 5, 6 coils and injectors. Mosfets test fine. No water damage. Is it a fried DME? Anything else I can fix on this? (Someone mentioned power supply?)

MOSFETs can fail short-circuit or open-circuit. As others have stated in this thread, the simple testing method in this thread may not reveal that a MOSFET is blown. It's best to replace all 6 at once. Also realize that a blown MOSFET can kill ignition coils and injectors.