i purchased some twm itb's with no injectors and soon after i bought some rc injectors the problem is that the rings that go on the itbs themselves dont have enough pressure meaning they dont hold pressure when i put the injectors im not sure what to do any help is good thanks

 

i'm assuming the ITB's were designed to fit factory injectors. In this case, you have probably a gap the same thickness as the injector o-ring?

 

Are you referring to the o-ring at the top of the injector, the part that seals the injector in the fuel rail?