Quote:
Originally Posted by AeroWRX
I thought Yamaha worked on the cylinder head and helped with the fuel injection? Subaru did most if not all the engine work and it's not a bad motor Every article and test drive says it's a damn good engine for 200hp. :happy0180:
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There's no proof that Yamaha worked on the heads; it was an assumption based on past high HP/L Toyota engines. With the FA20, Toyota transplanted their D4S fuel injection at a minimum, and Subaru appeared to do the rest. I don't think the source of the ECU is known yet though.