The Holley system will also increase the idle when the AC comes on. I think FAST might do that also. They have a sensor wire that connects to the AC and when it gets a voltage signal the idle speed will increase.
Yes the Fast system does that as well.
I lot of the power comes from the infinitely adjustable timing curve.
I run the fast xfi system and needs a laptop to tune.
Being able to see what is happening is a big advantage. My car is a procharged street strip so the EFI made a lot of sense, at least for me.
There are both advantages and disadvantages There is a learning curve for sure
Oh yeah there is a learning curve.. there is so
much data you can get you need to have that
learning curve.. when I started with the Holley
HP I was lost and needed some help with all of
the stuff on it.. way more than I figured.. hell
even working in the fuel lab and flowing injectors
for months I couldnt get a grasp of it .. love it
now and wouldnt change back
