Ok, so here we go...the unveiling of the top-secret fuel setup! I wasn't about to pay $600+ for a set of higher-flow injectors, especially given the well-documented problems that people have had over the years running ethanol blends with side-feed injectors. So....what I did was make some top feed fuel rails.
These rails will accommodate a TON of different injectors, and by leaving the stock fuel rails in place, the injectors seal up very nicely with just a couple of #12 orings around the bottom. I opted for high-impedance 460cc RX-7 injectors. These will not require resistors, and are very cheap and widely available. By shopping around, I paid an average of about $20 per injector...so we're talking $120 for the injector upgrade. Of course, you've got to wire in new pigtails for them, but they can be found for anywhere from $1-8 depending on whether or not you want the fancy quick-release or not.
As I mentioned before, I'm planning on running E85. I'll be running an inline walbro fuel pump, in a to-be-determined location...then through both fuel rails, to an adjustable pressure regulator, then the return line. With the second pump in series, I'll have all the flexibility I want fuel-pressure wise. Able to run anywhere from 30ish to 90+psi base pressure if I feel like. That gives me the ability to effectively adjust my injector flow range from approximately 360cc/min (266 gasoline-equivalent) all the way up to 620cc/min (450cc gasoline-equivalent), with no additional fuel management. The addition of ROM editing capability is just icing on the cake.
I flowed these injectors at around 430 on average, so at 32psi base pressure, and E85, I'll be pretty close to zeroed out as far as fuel correction goes. That'll have to do until I get my adapter board from LAN...not that it's going anywhere but in and out of the shop until I get the exhaust bit done.
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