Apexi S-AFC
 

How much is a good price for one of these

Is it worth it to pick one of these up for my car with a CAI and exhast, before i get Headers and cams, also can u make 2 profiles with this thing one for the curve when the car is N/A and one when im running No2?

Also Can i install this myself?

How many hours of Dyno Tuning can i expect

S-AFC's have been covered IN DEPTH here in the last week or two.

The price runs from $250 to $399.

The S-AFC does NOT work with Nitrous. It does NOT control timing.

The S-AFC just alters the fuel to the engine, by 'altering' the air signal that the ECU recieves. By increaseing the Air signal, it the ECU adds more fuel, by decreaseing the air signal, the ECU to add less fuel.

In general, the S-AFC should be added after headers and exhaust, CAI and BTB/BIM.

The S-AFC cannot be tuned for N/A and then tuned for Nitrous.

You cannot tune the S-AFC yourself. It must be setup on a dyno with a wideband 02 sensor reading the emissions out the tailpipe.

by working with NO2 i meant can i tune it to dump more fuel into the engine when the NO2 is being introduced into the engine. meaning does it hold 2 proflies, but it doesnt, which is fine, it was just a ?

The S-AFC has low throttle maps and full throttle maps, it does not have a third map for use with nitrous.

thank you, the reason i asked was because i was afraid i would lean out the engine if it was tuned for the N/A mods than i stressed it by demanding more fuel because of the NO2, than by by motor

In theory, if you tuned the S-AFC right, and had larger fuel pump, plus a 75 shot of nitrous, plus Headers, full exhaust, BTB, BIM, CAI, you could be at the limit of the stock injectors, even at higher fuel pressures.

I think that is the problem that Jaws021 is running into. In theory, a 75 shot should be okay with the fuel pump upgrade, however, when you add in the other mods, with the 75 shot, the capacity of the stock injectors is exceeded, even at higher fuel pressures.

Then the only way is to fit larger injectors, use the s-afc to tune them "down" most of the time, and then use the increase in fuel pressure to fuel the needs of the Nitrous.

Either that...or move to a "wet" nitrous setup.

Wet srtup would be a whole lot easier and safer. 80HP from a 43 shot NOS setup hehe....

Just ask Fordfaster about it.