Chips and emissions

[atchambers12]

So my 1986 325e (2.5 swapped) failed emissions today. I think it’s because I didn’t take the chip out before getting it tested. When I purchased the car a few weeks ago, the seller gave me two additional chips with it: one for a 325ix and the other stock. Can anyone help me figure out which one is which?

https://drive.google.com/file/d/1jFw...w?usp=drivesdk
https://drive.google.com/file/d/1yJq...w?usp=drivesdk

[hakentt]

performance chip for E30 is pretty much a scam. BMW did a good job on these, stock chip is the best, but just by number off the chip I can't tell you what ECU it fits