I’d echo all that’s been said. My xflow was replaced with a std tune 2.0 blacktop zetec 12 years ago. Raceline did the work with lots of their lovely parts used. It has been utterly reliable, with easy torque and 160 plus bhp. I run it on the std twin Weber 40DCOE that the xflow ran, rejetted appropriately. They are at the limit, but fine for this level of tune. I wholeheartedly recommend it for someone who wants a hassle free touring engine. I think the 200bhp spec must be nice, but can’t justify it to myself at present.