Originally Posted By 451Mopar
Originally Posted By lockjaw-express
Well, after all of the great information, I just finished running my return line to the fuel cell, and decided on the Holley Dominator ECU kit with dual O2 sensor support.

Holley made a good argument for having a dual O2 system, and MPFI.

I will just sell the FiTech FCC on ebay...wont lose any money as they are on back order from Fitech.

Ray Barton also told me that the Holley MPFI was far superior that anything he has installed.

Thanks, Mark



Sounds like the way to go with such a radical engine.
I haven't got my FiTech, they are on back order, but it is for a much milder engine. I think large cams with a lot of overlap and intake reversion can upset the MAP sensor, and the software needs to be pretty advanced to handle that (for speed/density), or just use Alpha-N fueling? I'm not sure the FiTech software does Alpha-N?
There is absolutely no reason to NOT run speed density. That's what I use on virtually everything. The Corvette Drag Week car from Canada has an 875" 5.3 bore space motor, that makes nearly 1700hp on nuts. It is speed density, coil on plug and even has drive by wire throttle bodies