Uk - Kettering
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I've just bought a hatori muffler to run on my evo30 with webra 36.
When fitting this I noticed that the duct from the flange to the main chamber of the exhaust is alot smaller than the exhaust outlet on the engine.
Will this affect performance?
Will it improve or make things worse if I was to "port" the muffler
as in two stroke tuning on motorcycles.
IE blend in the exhaust duct to match the size and shape of the engine outlet.
Thanks for any comments on this.