I have a 1997 M3 sedan.
I have long tube headers, removed SAP and have O2 & SAP sims.
After I did the headers I get the following codes:
P1250
P0173
P0170
P1188
P1189
Any ideas?? I need the CEL off!!
Before the long tubes I have no CELS. Ugh
josh, its because you touch yourself…
just search them, theyre almost all fuel related…im sure peeps on M forums had same prob
Are all four O2 sims identical? The front and rears need to show different reading or else it trips codes.
I know 
They should be, I ordered them all together new from that BMW place.
Ok I found out the problem and it is the SAP sim that I got from AA. They refunded my money, and I am now going to make my own SAP SIM.
Does anyone want me to make them a SAP Sim?