I had an Apexi *-AFC II on my saturn when I had it nitrous'd, it was okay with keeping up with that but once I put my turbo in it would accomidate for fuel with 5# anything after that Id lean out. Then I went with megasquirt, then because JE pistons suck and had too big of a piston ring groove the the pistons slapped and chipped away on my BRAND NEW block and it died... sad sad story, thats when I gave up on modding my saturn and threw my old engine back in it.
But yea, the AFC is highly dependent on the MAF/MAP sensor, they work great for honda guys who have 3 bar map sensors but they arent the best on saturns and I beleive bonnevilles use the same as the saturn... not exactly sure though.
Spiral, you DO have my support, and a little friendly ribbing from time to time. I've been patiently awaiting the successful completion icon_wink.gif
It runs great now, well at this moment it doesnt run at all because the PCM is gone and my cluster is ripped out so I can clean the connectors. But before I ripped that apart I did a wicked burnout without the the assistance of the E-Brake. No more of those until I find a LSD option for the 4T60-E'* though.