Planning on doing a d15 build up here but need to know what ecu to use. THE BUILD! D15 DX longblock High Comp Head Gasket VX (or ZC pistons would be even better) pistons CRX Si (a6) camshaft @ 4.75 zero'd out Civic Si (D16Z6) Intake Manifold PimpAss Bisimoto Header Now the question is CAN i use the CRX Si Ecu? Will the Ecu from a Pre-OBD car work on my OBD1 hatch? "so your telling me this coke bottle has more displacement than your engine? "