FAST Precision-Flow Fuel Injectors, 50 Pound, High-Impedance (GM LS3, LS7, L76, L92 & L99)
[30507-8]

I tested these injectors against the Racetronix injectors I got from them and the FAST was consistent in flow. These Racetronix injectors are junk and are cheaper for a reason. I cannot risk blowing a motor because of an injector not pulling fuel in one cylinder. Buyer beware of Racetronix. Even their fuel pumps are junk. You can say I along with many others have been screwed by this company. Just try and call them for customer service or support, they'll tell you to go to their board forum and search for the answer there lol. What a joke.