ScienceofSpeed introduces a plug and play E85 FlexFuel System for the Honda S2000.

In addition to its environmental benefits, E85 fuel has become very popular with performance enthusiasts. The fuel can be used to produce significantly more power from super and turbocharged engines at a fraction of the cost of high octane race fuel.

E85 is a blend of ethanol and gasoline. Despite pumps being labeled "E85" the actual ethanol content can vary 70-85% depending on the season. The amount of fuel required for the engine to safely operate depends on the content of ethanol in the fuel.

The ScienceofSpeed E85 FlexFuel system adds a composition sensor that communicates the percentage of ethanol in the fuel to your engine management system. Based on the sensor's reading, the ECU will then vary fuel, ignition, and boost level automatically and seamlessly to the driver.

The system eliminates the need to completely drain your fuel tank every time you want to switch from gasoline to E85 - allowing the ECU to compensate for different ethanol content no mater what percentage happens to be in the tank.

The system is designed to work seamlessly in-line with the factory fuel system and includes a stainless steel bracket that mounts the sensor in a factory location up and above the bottom of the frame rail. No drilling or modification of the car is required to install!

product information:
http://scienceofspeed.com/products/e.../E85_FlexFuel/

tuning strategies for E85 FlexFuel:
https://www.s2ki.com/s2000/topic/106...-e85-flexfuel/

mounts to factory location, no drilling required, compatible with both 2000-05 and 2006-09 S2000:

 

How does this connect to AEM v2? Will I need to pin into a switch on one of the connectors?

 

Now all I need is for Hondata to figure out the issue with having a flex fuel option this is such an awesome product!!!

 

cant be used with a series 1 aem ems right?

 

That is correct

 

You wire it into aem v2 using the spare speed input

 

Yes. The sensor has 3 wires: power, ground, and output. The output wire will need to run to the appropriate pin on your AEM box (as dictated by your Switch choice in the AEM software).

 

You can also use one of several available switched inputs (I'm using Switch 5, for example).

 

The following is one way to wire the output from the sensor. I chose to use Switch 5 (pin A26)





In the flex fuel map, you need to active the input (again, I chose 'switch 5' but you can choose T3/T4/Switch2-6). Additionally, you need to turn the rising/falling edge for your switch 'ON'; the falling edge of T3 (VSS) is 'ON' by default and can be left alone. To add channels to the 'Options-Flex Fuel' window, right click in a blank section of the window, right-click, 'insert options', scroll down to your correct switch (Sw5 rising edge/Sw5 falling edge), and add them to the window; turning them 'ON' as previously mentioned:



SoS, I like your mounting solution

 

Very nice and a decent price too!

One question though......What about us that are running -10 feed lines and the Full Blown fuel rail? Any provisions for people running larger AN lines? I don't think it would be good to choke down from a -10 to what this looks to be, -6 sized line.