Which MSD box should I get?

MiracleMax · 03-16-2001, 10:43 PM

Hmmmm.., but the factory shutoff is at 6250 rpm. If you haven't altered the factory rev limit then what are you going to set your 6AL at? 6000 rpm. The engine is still going to hit 6250+ if its got any momentum and your still going to run into a lean condition if your using nitrous. IMO a super-charged engine sucking in empty air is going to be just as lean as a N/A engine sucking in empty air (which is about a All:0 a/f ratio).

Other than the rev limiter I don't see any advantage to running a 6AL over the 6A. Now combine the 6AL with an Extender or some other similar device where you can eliminate the factory fuel cut-off and just use the 6AL's ign kill then that would make sense rather than short changing the engine on RPM.

Hey Smokey, you can get a harness that just about plugs the whole system in from MSD. that way if the box fails then you just unplug the system and keep on roll'n.

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03-16-2001, 10:43 PM	#9
MiracleMax Registered Member Join Date: Apr 1999 Location: Hayes, Va, USA Posts: 798	Hmmmm.., but the factory shutoff is at 6250 rpm. If you haven't altered the factory rev limit then what are you going to set your 6AL at? 6000 rpm. The engine is still going to hit 6250+ if its got any momentum and your still going to run into a lean condition if your using nitrous. IMO a super-charged engine sucking in empty air is going to be just as lean as a N/A engine sucking in empty air (which is about a All:0 a/f ratio). Other than the rev limiter I don't see any advantage to running a 6AL over the 6A. Now combine the 6AL with an Extender or some other similar device where you can eliminate the factory fuel cut-off and just use the 6AL's ign kill then that would make sense rather than short changing the engine on RPM. Hey Smokey, you can get a harness that just about plugs the whole system in from MSD. that way if the box fails then you just unplug the system and keep on roll'n.