Ton's of people have had Nismo injectors stick open and have to be replaced (no warranty on the Nismo's)... Fred and POPS are two names to come to mind to have an injector or two go out on them...and these were the brand new Nismo injectors. Someone had sent a set of Nismo 550's to RC and had them flow tested...they did okay...but some were in the 540cc range and some were in the 560cc range. After RC balanced them they all flowed within 1cc of each other at 550cc (Nismo's are 550cc...not 555cc like a lot of people think). Anyways if I do get Nismo 740cc's (which it looks like I have to do cause I have a 95) then I'll send them to RC to be balanced out before I install them... cause an injector sticking open can mess up a lot of shit.