ok so while being new to the forum i have a question on my car. first off i have a 96 mustang gt, pi conversion, no cats to flowmaster 40 dumps, msd wires. at first i was running with a makeshift roush cold air intake. then i upgraded my tb and plenum 75mm all the way on both. Now comes the fun part...... after i upgraded tb and plenum, i had a mac ram air intake lyin around that went on my brothers 2002 mustang
. now i knew that the mafs were different cause of the maf housing. so i got a maf from a 99 to 2001 crown vic, which has the iat seperate just like my mustang. the intake is about 4 inches and has a 6 inch filter. so i installed it, then reset my computer so it would relearn it self. now after 2 days i got mil light, sayin i run too lean on both banks. i thought duhhh lol cause of the intake but decided to wait on it a bit. now the kicker....... i went back to a bbk intake where i decided to keep it ram intake style. so bbk pipe to my original maf housing and original maf plus a 4 inch filter. now when i relearnd the computer, it runs way too rich now.....and also has no go after 3500, it boggs out. so i decided to go back to the mac intake. but now i sound like a carbed car. so my question to all of u knowledgable ppl is wtf is goin on lol. i run way too rich with the bbk intake, but too lean with the mac intake. Im running the mac atm so that way i can atleast go to and from work, but are a little worried about it. If its a tune i need then that would confirm alot but it does feel like its something messin with my idle. and so far i havent found any vacuum leaks (used some carb cleaner and sprayed it everywhere listening for a increase in rpms but no positive result) So i come to u my friends for advice and suggestions. i appreciate any i get to resolve my dilema and im leaning towards the iac somehow but cant pinpoint it.