Hi so I have a 2008 Audi a3 1.8TFSI with the CDA engine. I’ve bought a BZB engine and fitting it (loom attached already so I didn’t really notice any difference when fitting compared to the old engine). After completing, I ran a diagnostics of the car, code “P164E Oil pressure regulation valve - electrical error” came up. In the low rpm the car is very on and off, and boggy. After looking at the old engine, I found the sensor location, however the BZB engine doesn’t seem to have one. My question is, assuming the standard CDA ecu is sending a request to a sensor that doesn’t seem to exist, would I need to buy a new ecu to compensate for this? 

In my situation with my A6, swapping the engine also requires the matching ECU and injection pump and then it being coded to the instrument cluster. I'd suspect you'd need something similar 

Would I be able to buy the cluster and ecu as a set? Or would it still need coding? 

On 9/4/2023 at 12:33 AM, Elijah said:

Would I be able to buy the cluster and ecu as a set? Or would it still need coding? 

If it all comes from the same car then you should be ok I think. The only problem is, the mileage for your car would be wrong. In my opinion you'd be better getting it all coded to your current cluster 

What cost roughly for coding ecu to the cluster? Just looking at options to see if it’s worth it