I brought this up in another thread but figured it would be easier to find if there was a dedicated thread. Anyone that has a CBFA car and has a high flow cat or a tespipe will know that the CEL is tricky to eliminate.
For those of us that do not have the luxury of no state emissions or lax state emissions the APR stg2 software will not work due to the readiness codes not being set. I know for a fact that in Northern VA you will not pass without readiness codes.
I currently have a Eurojet v1 downpipe with a 200cell cat on my 08 CBFA GTi. I managed to eliminate the CEL by using the following:
BFI Spacer on 2nd o2 sensor:
RAI J-pipe spacer on the 3rd o2 sensor utilizing the smallest insert:
I've put 500 miles on the car with the spacers and no CEL. Scanned for codes, nothing
ViRtUaLheretic was able to do the same with the following:
Wayne Angle Block:
Autozone spark plug non fouler (part number 42002):
If anyone else has managed to trick the pesky CBFA motor, please feel free to post up.
Hope this helps.