Any one ever used a set of the ASNU fuel injectors out of england yet I have a set of 600cc that I want to try they gave me a bunch of info but I dont think I am good enough yet to put it together rite it is not broke down for hp tuner tables. Both the guys I spent time with in vegas very helpful and both have like 12 years with bosh as enginers and they also have I think like 10 years in IRL and Indy car type stuff with fuel systems. They said that I would be very happy these. I like that they are multy hole with great atomisation and with a nice 20 degree spray pattern. there web site is asnuinjector.com all the info for all there injectors is on there. They even have a lot of custom GDI injectors.