The second set from the ebay vendor selling refurbished injectors sent me another set of 450's so I sent them back and got a set of NEW BOSCH 550cc injectors. Close to just going with the 178mm crank pulley but the 3rd time is the charm, I hope. Found a set of Bosch 550cc injectors and ordered them. Again, Jerry will do a tune for the 550's....................to be continued!