Originally Posted by BlazeRex
I've seen multiple AEM's read low 15's when they are supposed to read 14.7 at idle. I've learned to deal with it.
If Subaru thought the best way to monitor CL AFR was in the downpipe, wouldnt they have done that? A wideband should be used for in boost only IMO
For the twin-scroll cars, Subaru actually did put the front O2 in the downpipe.