MSD Atomic EFI

[steveracer]

Just wondering if anyone has used this set up and where to get a good deal on one.

[Yelcamino]

You'll probably find one of the best prices at Summit Racing.

Of course it never hurts to look around...

[steveracer]

Thanks Herb, I've looked around a little and it seems everyones asking full MSRP of $2290. I hate to pay full MSRP for anything. I'm a poor man. I gota fart just to have a cent in my pocket.

[Yelcamino]

I gota fart just to have a cent in my pocket.

Never heard that one before!

Considering the MSD unit is new, MSRP is probably all you'll find for a while. Sometimes if you see a vender at an event/show they'll have a "show only" price on some of their products. It might be worth waiting until the season starts. You never know what you might find.

[TrevorR]

MSD came to our local Speed Shop (Performance Improvements) for a demo. The Atomic EFI was setup on a 67 Mustang, which ran very well. They had a one day prices of $2300 plus they threw in an 6AL.

I am curious if anyone on here is running the system setup as returnless, while the pump is inline (external to the tank)? If they have, what is their oppinion?

Also could one use a 1/4 pipe at the sending unit at the tank as a return line, or is that too small?

Thx

[Rod]

there all asking $2290 because thats what MSD told us to do.... we sold a few of the kits for less, and MSD contacted our shop and told us they would, both no longer allow us to be a dealer and also they wouldnt honor the free 6a box offer to buyers with our reciepts unless we sold the atomic at the sugessted price so we offer free ship now on that...

on to the question, the atomic is a great kit works well and easy to tune

[Mr Nick]

Rodney, does the MSD Atomic EFI adjust timing on the fly for temp changes and what not? Or is it just an electronic way of doing the same thing that advance weights, springs, and vac advance would do?

[Rod]

Rodney, does the MSD Atomic EFI adjust timing on the fly for temp changes and what not? Or is it just an electronic way of doing the same thing that advance weights, springs, and vac advance would do?

just an electronic weight set with a few options

from there(MSD) directions

Under the "Initial Setup" screen on the Atomic EFI handheld, you will select "ENABLED" for Timing Control. Next, under "Advanced Setup", find parameters to set a timing curve. The Atomic is limited to 44 degrees of total timing (including vacuum advance) due to the limits of a distributor

you can set any base idle timing (minimum 500RPM) you would like, along with any total timing (minimum 1500RPM) you would like.
In addition to this, you would be able to set a start RPM where the idle timing starts to advance towards total timing.
You will also set the RPM at which timing reaches total timing. This will act like one of our distributor spring/bushing kits, but is not limited and can be set exactly. You cannot do a custom 3D timing table. No the timing curve cannot be locked out.
The base timing can be set as early as 500 RPM and the fastest advance curve will end at 1500RPM.

There is no start retard setting. However, if the Atomic is controlling ignition timing the Idle Timing setting entered in the system will be used during starting. If idle timing is set to 10 degrees that is what timing will be during cranking. For example, if the engine needs a lower timing for cranking, you can set your idle timing lower (i.e. 5 degrees). By beginning the timing ramp at 500 rpm with Total Timing at 35 degrees at 2000 rpm. This will create a retarded start with 2 degrees of advance 100 rpm through 2000. At an 800 rpm idle, ignition timing will be 11 degrees. This is one example of the many options available; always find the settings that will work best for the particular engine.

[Mr Nick]

Ahhh, thanks for the info! I was happy to see a self tuning EFI system with timing control, but it's not as advanced as I'd hoped.

[elwaupo]

Yeah but has anybody run one of these units on their own car as a daily driver? I have a 69 SS Camaro I want to convert to EFI and I can't find anyone that has run any EFI.

[chevymike]

Hi all,

I have been on P-T.com for quite a while. I had been building a PT '69 Camaro but a divorce brought that to a halt. Well I had a buddy ask me for some advice on doing EFI on his Chevelle so I thought I would do some research here.

He has a 496 BBC in his '67 Chevelle. I have been reading about this new MSD system but really haven't found anyone running it in the real world. Has anyone run this system out on the road and have any info about how well it works, easy of setup, reliability, etc.? Looking for opinions.

Thanks all.

[hall69]

I have it, at first I ran it with returnless fuel, the system failed under hot conditions, I put a pump in the tank and ran a return line with reg. I used a kit from Rick's tanks. I really like the system now that I have all the stuff done that I didn't want to do. The throttle response is awesome, great cold start. I dyno the car with a carb and have not yet got it done with the Atomic EFI, but the car does seem to have more power.

[elwaupo]

Post the dyno results with the EFI, we're curious o the results. I'm pretty sure I'll go with the Atomic set up.