All I've ever heard is that the stock system is very restrictive! Hence the reason everyone whacks on aftermarket stuff.
Why did mine sieze then, when it was running fine on standard? Is it the cans which make the difference?
At a trackday my racepipes were banned due to noise regs (Castle Coombe) and I had to stick the standard ones back on. It ran so rich it wouldn't pull past 9000...
Enlighten me!
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MC21SP Plaything
BMW F800GS Bumblebee
Triumph 9551 Daytona Big boys toy
FJ1100 Sporting relic
GTS1000 oddball
