[slowbubblecar]

I think it has to do with being able to be in the right timing maps. The car will idle like stock without having to be so negative on the safc and will be easier to tune. I think you can be running in the wrong timing map if you have big injectors where you are way negative. What do you have your safc for idle? I would personally ditch the 5 know and get the blue faced model one above it.

I have a socketed eprom and just had a chip burned for it to idle my 780s as stock. I would probably need to be around -45 or so on the safc and it is a lot harder to tune like that.