We've recently some testing with the ScienceofSpeed TS-MAX Turbocharger System using a GTX3582R with E85. In particular, we were looking to quantify the brake specific fuel consumption (fuel consumption efficiency) for this engine with this turbocharger system. We have been using a BSFC ratio of .78 for E85 as an estimate when specing fuel systems. The following data supports that the engine / turbocharger system is more efficient than expected and that a lower BSFC may be used for calculation. We hope this helps you when calculating your fuel system needs.

2004 Honda S2000 w/ factory 2.2L F22C1
estimated crankshaft horsepower: 586 BHP (see note below)
wheel horsepower: 518.2 WHP
MAP: 18.4 PSI
injector type: Injector Dynamics 2000 cc/min @ 3 BAR
fuel rail pressure @ max power: 65 PSI
injector duty @ max power: 44%

Based on these numbers, we are estimating BSFC to be .7 based on 588 BHP at the crankshaft based on 11.5% drivetrain loss. The drivetrain loss is where the largest assumption is made. While the factory rated power (240 BHP) can be used calculate a general baseline of 14% based on a factory car being measured at 210 HP at the wheels, the drivetrain loss does not remaining constant as power increases (as there are many things in the drivetrain that do not cause more friction loss as the power increases). In general, we use .75% less for every 100 hp increase over factory power.

We'll be back at the dyno to break 600 BHP soon.

RC Engineering offers an easy to use calculator for estimates:
http://rceng.com/technical.aspx

If you're looking for a solution already calculated for your power goal, check out this site:
http://scienceofspeed.com/products/e..._fuel_package/