I supplied Henrik with his Jetex system. We run these on our fleet of 240s for a very good reason. Slight improvement in fuel consumption (1-2mpg) and more power. We tow a lot especially long distance - it is very noticeable on hills - it has meant one gear higher on some of our regular hills. Not noticeably noisier, nicer note and importantly designed, and made in Sweden for the 240. Exhaust design does have effects on performance and the art is to produce a free flowing system that is also balanced which this system does. Home brewed are likely to increase noise levels and even reduce power. They are also built of a heavy gauge steel and have a long life.
Mike
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