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Message: [QUOTE="Hotrodtractor, post: 393061, member: 25"] By 2007 I was heavily involved in injector development to improve the delivery rates of the fuel injectors for competition purposes. By the fall of 2009 we had already tested LOTS of combinations of parts both on the bench and in trucks - anything from custom milled nozzle tips, higher lift poppets, lower ratio plungers and barrels, higher ICP, blah blah blah. In the fall of that year was when we started going down a path that pushed us into the 430cc area of fuel in the 2.5ms time window. Still unhappy with the flow rate and system control resolution we kept on pushing and have improved greatly on many fronts since that time. In fact I decided upon the new injection ratio from testing with various tips earlier in the summer of 2009 and we were testing with what I consider crude prototypes - both borrowed from other injector builders as well as stuff cobbled together to prove concept. Unfortunately that is when the company I was working for hit the wall in the economy and the downturn resulted in significantly shorter hours and less pay for a while - so even once I was able to secure a production facility capable of machining matched plungers and barrels to the 50 millionths of an inch slip fit (taking into account the proprietary coatings that I used that happen to be the exact same as found in the very high end tractor pulling plungers and barrels) that I demanded to keep the efficiency as high as possible by eliminating a significant amount of fuel bypass found in looser machined plungers and barrels it took me until the spring of 2011 to get my first set of production pieces. Since those pieces have been in testing I was able to narrow down exactly what I wanted and needed out of an injector tip and am waiting on the billet blanks to finished up currently while I also finish up hand winding my custom built "quad Gauss" solenoid coils that were their own unique undertaking in design and manufacture. And as long as I keep working forward and working with a couple of select people on our own goals for our own purposes on our own dimes - it doesn't matter how long it takes us or how much it costs us - because we have next to no intentions of actually marketing these to the general public - these are high end competition only injectors. [/QUOTE]