#86423, "RE: 450 DSM injectors help" In response to Reply # 0
The 450 cc/min stock DSM injectors will supposely fit, but they are a very tight squeeze. I tried to install a set once, but I couldn't get them in. I heard that you need to squeeze them in with the stock-sized O-rings but I wasn't able to do it, I kept thinking I was going to break something or pinch one of the O-rings. Good luck...
#86433, "RE: 450 DSM injectors help" In response to Reply # 2
the ones i installed had no problem with the intake, the rail was tight. you didnt let oil soak on the o-rings overnight or for long hours did you? causing them to swell up.
#86442, "RE: 450 DSM injectors help" In response to Reply # 3
They will be really tight going in both intake and rail, but they will fit. I put a little oil on all the o-rings and installed the injectors in the rail first. Then I fought like hell to get them pushed into the intake, but they will go. It can be very frustrating.