| I've had a bunch of people asking lately about using E85 with my top-feed fuel rails and any possible pitfalls, so figured I would post the info for everyone to search and/or discuss. Injectors-
RC Engineering states that they have not puposely designed their injectors to be E85 compliant, and at this time they do not recommend using E85 in a daily driver with their injectors. For a racing application, they recommend draining the fuel at the end of a race and circulating 100% gasoline through the system to protect against corrosion while the car is not running. They ended the conversation by stating that they do know several people that have been using RC injectors with E85 on a daily basis for two years with no problems yet. For all non-RC injectors, please contact the manufacturer for their recommendations. Bottom line, "use E85 at your own risk." BDE Top-Feed fuel rails- I recommend stripping the current black anodize and applying a hard anodize or Nickel plating in it's place, with special attention given to ensure the internal passages are 100% coated. Again, "use E85 at your own risk", BDE will not be held responsible for any damage caused by E85 corrosion. Plumbing- As with the fuel rails, all plumbing fittings and lines should be chosen for their corrosion protection and compatibility with alcohol based fuels. ECU- At this date, I'm not sure of any tuners that are burning E85 chips for the stock ECU, specifically for the injector sizes needed (1000+ cc/min) to make higher than average HP that is already attainable on pump gas (if any are, this would be a good post to respond). So, my recommendation is to plan on a stand-alone ECU or similar user-tunable system. Injector driver- If all you are after is bigger injectors, sure you can wire in resistors to use the higher flowing P&H injectors, but that's like throwing away half of the benefit of their technology. Plan on buying an injector driver if you are using low-impedance (Peak and Hold) injectors, which is what 1000, 1200, and 1600cc/min injectors use, to take full advantage of their faster opening time. Bottom line, if the cost of a $300 injector driver is causing unwanted pressure on the wallet, all the additional expense of reliably running E85 probably isn't for you. Do it right... do it once.
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