will changing of my fmic affect the a/f ratio?my current fmic is kinda 2wice the size of my previous ic..tanks in advance

 

Yes it will. We went from a drag to a precision 600hp and it ran a bit leaner.

 

ok..is the diff a lot or just a lil?? was running a bit rich b4,so i guess if its nt much of a diff,than i shld still be fine cos the previous tune was running a lil rich...guess best is to get it on the wideband to double check rite...

 

I couldn't way if it would be alot or alittle for your setup. Like you said best thing would be is to get a wideband and check.