Thread: Edelbrock Pro-Flo conflicts with MSD 6A

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I am trying to get an MSD 6A to work with an Edelbrock Pro-Flo EFI system. I am encountering a couple of of problems.

First, it is causing the the Calibration Module to reset, espeically at idle. Edelbrock tech support said something about RFI from the MSD 6A.

Second problem is the engine misses under part throttle. I have tried changes to the Global Fuel Modifier without success. I now am suspect that the stock-type coil is not keeping up with the MSD. I have a Blaster 3 coil, HEI External Coil Adapter, and Accel 8.8 wires coming early next week. I am hoping these will improve the problem with miss-fires. If not, they should not hurt and will make nice upgrades to the engine compartment.

Ideas anyone?

Holy crap! Is that a SBC in the back of that porsche? Bet it does some great wheelstands.

The front end stays on the ground just fine. With aluminum heads and intake, the weight is not much different than a porshce 911 turbo. But with 450+hp, it does take off much faster than most Porsche's.

I noticed in the picture (whatever happened to it) that you are running one of those tricorn looking Edelbrock air cleaners. In one of my other posts I am requesting help because my old one does not fit over my Performer carb in my corvette. Other than the fact that I really don't like the looks of the tricorn model, does it work ok?

The filter fits nicely in the Porsche engine compartment. Room is tight and its shape is accommodating. I think it is supposed to flow 1000 CFMwhich matches the throttle body. I have seen it on other SBC Porsche's. However, I don't think I would use in a more traditional application, mostly because of the esthetics.

I tried to post a better picture of the engine, system did not cooperate. Here is the picture I was trying to post.

Thanks for the answers on the filter. Back to the original post, all I can offer is the obvious, that as voltages increase the potential for leakages increase. Its kind of like water in a way. With more pressure water tends to find the path of lease resistance and escape. I'd check out all my wires again and make sure there is not a short or cross firing at the cap. You might run it at night and see if you can detect a blue arc.

Unless you are runing a full race engine I question the need for a coil on an HEI system that produces 45kV. It looks pretty, but I don't think its needed. The stock units are good up about 10k RPM. Just my opinion. Oh and thats an awesome 911.