Run Pre-mix or run RA OMP?

infernosg · 05-07-2012, 08:50 AM

What advice would you guys give for the following application:

S5 engine (electronic OMP)
Custom intake manifold (no provision for oil injectors)
Haltech Sprint RE (can't control electronic OMP)

Changing/modifying the intake manifold and/or changing the ECU are not options at this time, unfortunately. Aside from living with pre-mixing and no decel fuel cut the only option I can think of is to switch to a S4 front cover (clearance issues with S5 rotating assembly) and use the S4 mechnical OMP, which requires rigging some kind of OMP-throttle linkage (running TWM ITB's) and utilizing only two of the stock four oil injectors.

View Poll Results: Preferred method of running premix
Run premix after blocking of OMP	4	40.00%
Run premix via the RA OMP (or equivalent) kit	6	60.00%
Voters: 10. You may not vote on this poll

05-07-2012, 08:50 AM	#11
infernosg IT'S ALIVE! Join Date: Dec 2009 Location: Richmond, VA Posts: 811 Rep Power: 16	What advice would you guys give for the following application: S5 engine (electronic OMP) Custom intake manifold (no provision for oil injectors) Haltech Sprint RE (can't control electronic OMP) Changing/modifying the intake manifold and/or changing the ECU are not options at this time, unfortunately. Aside from living with pre-mixing and no decel fuel cut the only option I can think of is to switch to a S4 front cover (clearance issues with S5 rotating assembly) and use the S4 mechnical OMP, which requires rigging some kind of OMP-throttle linkage (running TWM ITB's) and utilizing only two of the stock four oil injectors. __________________ '86 Mazda RX-7 Base '79 Mazda RX-7 GS

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