[Elusive R]

Hey Mark! Howdy from AZ.

Read the following understanding that I have very little Mopar knowledge and haven't dealt with anything over about 500hp.

For air management, I'd say TPS, MAP and IAC will be all you'll need. I don't know if the companies mentioned have MAF systems available, but speed density is certainly capable of running both of those engines.

Are you looking to run a sequential injection? That will have a big effect on what type of ignition you'll need. I personally don't think there's anything wrong with batch-fire setups, they're just not 'new'. Sequential injection can certainly help smooth out idle and transitions, but the WOT horsepower gap would be small if anything at all. Sequential will also mean you'll have to put that much more effort into tuning (more buttons to push) and spend more money. I think you could run that engine just fine with a Holley Commander or Accel DFI 7+, but obviously there are more complex systems available. Just make sure you spring for a wideband O2, it will save you so much time and maybe even the engine.

So here's my lack of Mopar knowledge - can you run an HEI type ignition (something common and simple)? If yes, then I would with your street driving intentions. I would keep it as simple as possible, so skip the crank trigger if you can. Yes, the spark won't be as accurate, but you'll be tuning with the laptop so you can keep the tune safe for the conditions you'll come across. It won't be a dedicated race car so there is no reason to set the motor on kill anyway. For what it's worth, putting a Mallory (or MSD, etc. etc.) box on my car (hopped up ZZ4 with TPI) made a world of difference on cold starts and made the idle just a tad smoother.

As for the 572, you'll have to be more careful with that one since it will be forced induction. Things change very quickly with boost, so you might want to spring for one of the systems you mentioned to have that much more adjustability. Dyno time and patience will get you a tune that can be very street friendly.

Are you doing the tuning or having a shop do it? I know you've probably already heard/read this, but if someone is familiar with a system, their tune can and should be spot on no matter what computer is doing the job.

Anyway, if I've been of no help, all I can offer is that I'm a big fan of keeping things simple. Fancy stuff is great, but what happens when you're on your way to the Power Tour and you break down 100 miles from anywhere? It's nice to get stuff from NAPA in that case.

Ryan