Quote:
Originally Posted by KamRacing
The piper has an inch and a half of extra silencer than the KR Backbox. When I designed it I wanted a smooth bend so had to lengthen the pipe at back at the expense of noise reduction.
Sounds to me like the car in question is fuelling very nicely or its not doing something on overrun.
Maybe some longer duration 1321708 camshafts are needed to get fuel into the exhaust 
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The car does seem to run very week indeed, no misfeing or nothing, but if you do stand behind the car and rev it can smell the fuel slightly but I guess that's just because of having no cat, would those run wothout a remap? Think one of my stem seals is bit slightly wearing get the odd puff of blue smoke when start it up from cold every know and then wanna sort that out first but dunno who to take it to :/