[chipmunk]

edc - are you saying that using the Top Speed catback box may be a bit loud due to not having the second cat? I had thought about replacing the branches as a full system will always provide better performance but had been put off by the cost. The Fabspeed seems quite popular but from what I can see that will set you back a couple of thousand pounds. Hence my interest in something like the Top Speed catback. I did check whether they also supplied branches but from what I could see they didn’t for a 986.

Why do you need a balance pipe between the boxes? I assume here you mean the two separate boxes that the Top Speed catback unit has?

I see from your signature that you have a stainless steel exhaust and manifold – what did you fit?