Thread: New EFI system

Tweet

It looks like MSD have raised the bar on EFI retrofits with a new system (11/15/2011 or thereabouts) that they call "Atomic EFI" (Atomic EFI - Atomic makes EFI easier than easy). It appears to be the next thing to plug and play. Kind of a dumb name, but it does look pretty good. You don't even need a return line to contend with, only their high output, in line fuel pump. They also have a brand new forum on it. Pricing is about $2K which might be in line with where I want to go when I get tired of fooling with that carb. I do want some more of someone else's experience on it - too often been the guinea pig for now extinct products

I wonder if it'll handle duals? I guess it's time to go a'reading!

That looks like a pretty sweet system, Dave. I think sometime that my Edelbrock ProFlow XT is in the category of being too close to the development curve, and buying something that's becoming extinct. My saving grace is that it is Edelbrock, and so far they continue to evolve the product line and keep up with the changes, plus I've learned a bunch from the process which is not a bad thing. That Atomic EFI seems to have the best of everything, and the price is good, too! Maybe Santa can add to that compressor??

Mike - they have a forum that you can 'pose' that question on. My guess is not yet, too new.

Roger - I'm starting to do my 'homework' and every other one of these EFI to date seem to be too complicated for my needs. This one - maybe not so bad. I do need more info as well.

Adding to that compressor from Santa would be an excellent idea - but the 26 year old clothes dryer and 10-12 year old dish washer are barely working plus the kitchen counter top, hall and stair carpet are past due. We were hoping to be in a new home by now, leaving those projects for someone else, but that currently is in a holding pattern. I am saving my pennies though

Thanks Dave.I book marked it.One nagging question on EFI's is their inability to fire/cycle injectors fast enough in the upper RPM ranges.That the only answer to that is more pressure.

Originally Posted by IC2

It looks like MSD have raised the bar on EFI retrofits with a new system (11/15/2011 or thereabouts) that they call "Atomic EFI" (Atomic EFI - Atomic makes EFI easier than easy). It appears to be the next thing to plug and play. Kind of a dumb name, but it does look pretty good. You don't even need a return line to contend with, only their high output, in line fuel pump. They also have a brand new forum on it. Pricing is about $2K which might be in line with where I want to go when I get tired of fooling with that carb. I do want some more of someone else's experience on it - too often been the guinea pig for now extinct products

That looks pretty interesting, Dave. Must confess I've been exploring the possibilities of switching my 302-now306 to EFI via the setup from a 97-01 Ford Explorer. Even though they can be found pretty cheap, there are still issues involved with wiring harness, return fuel line, computer, etc. not mention do I really want to raise the hood of my 37 and see a modern EFI setup in there? Initially it sounds much cheaper than a $2k conversion but by the time it's all finished, it might not be. Is there any measurable difference between throttle body injection and direct injection when it comes to performance or fuel economy? Sure, I'm still a ways away from firing it up but I think it only makes sense to consider these possible future changes during the build process to hopefully minimize modifications later.....

Randy,
I believe you'll find that even though the OEM Ford system has eight injectors arranged in the intake runners they are fired in a batch mode, four & four, in opposing groups - i.e., the two most forward cylinders share a crank journal, so they are in opposing injector groups, injectors not firing together. As I understand it, the benefit of more injectors in a direct port arrangement is turndown, being able to achieve the desired F/A ratio from idle to full RPM. Since you have eight they can be smaller, and can be turned down to a lower flow value. The throttle body injection is more like a carb, providing a consistent F/A ratio into the intake based on MAP and RPM which together relate directly to load. I've never seen any information regarding injectors not being able to fire quick enough at high RPM, at least not for a normally aspirated street engine - not saying it is not true, just that I have never seen anything from a manufacturer citing that as a problem providing you have the required 40+ psig fuel supply.

Like you, I did not like the "look" of the OEM Ford intake, and I had guys at the performance shop pushing me toward the FAST system to look like a 4-barrel but I wanted the "tunnel ram" look of the Edelbrock, or something like that. I would be looking at a self learn system today, if I were starting over.

Roger-I don't remember where I saw the cycle speed problem.It kind of made sense given the milli second electic/mechanical function injectors go threw in the upper RPM ranges.It seems the TPI have a better attribute to build torque bands at a lower RPM over the TBI's,but don't work well in the upper RPM ranges as the TBI's do.

Originally Posted by IC2

Mike - they have a forum that you can 'pose' that question on. My guess is not yet, too new. I am saving my pennies though

Yes, I joined / registered and asked the question there. We'll see what happens.

Pennies? Me Too!