[Wade Chamberlain]

I run a blown and injected 302 in my FFR. I had the 02's in the collectors at first, but had problems when the computer tried to transition from open to closed loop control. The 02's were not hot enough, even though they are heated, and would indicate a rich condition. The computer tried to compensate by leaning up the mixture, which would cause a lean misfire, stumbling, etc. Once the car was up to full operating temperature and the 02's were hot, it seemed to run OK.

I relocated the 02's to a single pipe, about 13-14" out from the head and the problem is gone. However, I am concerned about only sampling one cylinder.