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Message: [QUOTE="Hotrodtractor, post: 203477, member: 25"] Are you saying that you don't see any appreciable gains in flow rate at any particular ICP and PW combination using a 400% tip over a stock BI tip? Or are you saying that B-codes don't perform as well at RPMs as say a hybrid injector with a similar displacement and tip? I guess I'm now a bit confused as to what your point of the first post even is..... At low ICP conditions at a particular PW and tips size the A code will outflow the B code will outflow the Hybrid. At high ICP conditions at a particular PW and tip size the hybrid will outflow the b-code will outflow the A-code. Generally speaking that is. Variations in loss of flow as RPMs increase on an injector at any given PW and ICP is more of an issue with injector and test setup. There are both internal and external things that can be done to help with the loss of flow at RPM. Looking at a split shot injector like a BI is also not a real good way to really understand how these injectors work - that split shot function adds a couple of variables to the mix that just complicates the matter. Simplifying the setup to a single shot injector removes those variables. I use data from multiple benches - most notably my good friends Cass's bench at Full Force and Nate's bench at Unlimited - but have had offers in the past from other performance injector builders as well. Its interesting the variations I have seen in testing working with two shops like this independent of each other. I can tell you that running the same set of injectors on each bench under the same conditions will not show you the same flow data - but both benches will show improvements from injector modifications when comparing that data to previous data done on the same bench - and both benches will allow someone to build, flow, and balance a set of injectors just fine. These variations are due to construction differences between the benches - its much like seeing the difference in two trucks with the exact same setup - but one setup produces more power than the other for no readily available reason. I've been very careful to not share any proprietary info between the two shops - and I can tell you that both go about the building and setup process differently - not that one way is better than the other - just different. I use injectors from both builders in trucks locally. [/QUOTE]