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Currently doing up a 7 Fireblade. It has 266 bhp, a Semi-racing exhaust gives me 276 bhp, but the full racing exhaust drops me to 228 bhp? How does that work? 
Currently doing up a 7 Fireblade. It has 266 bhp, a Semi-racing exhaust gives me 276 bhp, but the full racing exhaust drops me to 228 bhp? How does that work?![]()
Something to do with backpressure and all sorts, it's explained in another thread.