Guy at work has asked me to do a temporary weld job on the rear box, as he tells me it costs over £200, which he can't afford right now. No problem with that, as long as he takes it off for me, but I was wondering about the purpose of the butterfly valve I notice in one of the two tail pipes. Vacuum operated by looks of it. Is it just for sound effects? I can't think it adds to performance. Mike.
- posted
17 years ago