Forum membership has its advantages....

Reply to thread

Message: <blockquote data-quote="FABRICATOR" data-source="post: 33909" data-attributes="member: 80">Eric,In simple terms,  I would like to control fuel injection and ignition timing on a mildly tuned but large displacement V-8. Reliability is paramount along with instant throttle response, and a flat torque curve. One idea is to graft an LS1 management system onto a standard V8. The other is to use the LS1 coils with an MEFI 4 ECU (made by GM for Marine use. MEFI 3 comes on current 350 and 502 Chevy Ramjet engines). Fuel management would be by the same ECU and work with a twin 58 MM throttle body and a long, tuned runner manifold. The LS1 ECU is sort of a complicated animal and requires a ton of inputs, including mass air flow, O2, etc. Can it work without some of the inputs?? Or work with dummy inputs??IMHO some OEM systems are more reliable than aftermarket. A simple crank trigger MSD ignition system is reliable and is OK for drag racing but has no timing advance. This has to be done with a second "magic" box. Same thing with EFI. A Holley or Accel EFI does'nt control ignition. More boxes. MSD has a new coil-per-cylinder system, and I suspect others will follow. This system is very expensive and does not provide for EFI. IMHO at this point, most of the aftermarket is years behind what the OEMs are doing in performance applications. Engineers at Delphi claim a 100% increase in power at the spark plugs just by putting the coils there, and with less power consumed. The system will run on as little as 8 volts and timing is very precise. I'm sure it can be done to work in an off-road racing environment, but I have not found anyone who has ventured into this stuff yet. There are some LS1s out there now in some Class 1 cars and they're not missing a beat. The best ideas are the ones that look obvious to the casual observer.</blockquote>

Verification