I thought that RS midpipe had those two connection holes already open, hence if using with a RS "old" header (no converter) I plug cables into them, while when using with a catted header (i.e. the old PPE) which has 2 holes on it like the stock one, I had to close the midpipe holes somehow. I didn't know it came with plugs, good to know !Brian wrote:Not sure I understand the question. The RoadsterSport midpipe has two O2 connections...but they arrive with plugs that unscrew. So, you can use one or both as needed. With this header you would use just the O2 connection after the converter.
Has the new GWR catted header 2 holes like the old PPE and stock, or just 1 hole before the converter and none after ? I ask this question because as you wrote above, I would use one of the midpipe connections with this header (after converter).
If so, what if I mount the new GWR catted header with a straight midpipe, like i.e. the Racing Beat, which has no converter nor sensor holes ?