I hear what youre saying and thats what ive always thought, but ive managed to confuse myself.NegativeGeForce said:umm not exacly
taking 35% of fuel out with an afc sets back the afm 35%...so your timing from the ecu could be anywhere.
if your just letting unmetered air in through a lex afm, and setting fuel back 10% then your setting the afm only 10% backwards so the timing is more close to stock....
But think about it. lets say the signal for the afm has 10 points (since hz doesnt tell the whole story) before fuel cut. Our operating conditions (boost/incoming air remain the same)... So when my afm reads xx airflow the ecu sees 10 and i hit fco. lets say its sending 10 to the ecu, so i pull 30% fuel, now the ecu is seeing 7. Now apply this to a lex afm. Same thing, the lex afm will "pull" 25% of the signal away, so now your ecu is seeing 7.5... take away another 5% from the safr and youre in the same boat.
Am i wrong?
I dont mind picking one up, but i dont want to get one for no reason.suprafly1986 said:my advice would be not to poke holes in the intake pipe with little filters, since the system can't effectively meter air that enters the system AFTER the AFM. If you have some sort of tuning, go ahead and use Lex AFM. All you need is the housing, the brains stay the same.