In the right hands, it is as capable as anything on the market. The same could be said for the AMS, though. There is a reason many of the biggest tuners in Japan use the Power FC.

 

couple questions because i'm desperately trying to digure out a stand alone system.

does pfc use the stock knock sensor and how good is the stock knock sensor, i've heard with other stand alones that an aftermarket sensor that is extremely sensitve is better (heard this from rex owners).

doe sthe pfc pull timing if knock is above warning level? this is important to me because i don't want to blow my engine.

you can convert to speed density right? so what wideband o2 sensor is used, ems can use gm or aem unit, are there options for apexi? does it come with one?

what is d jetro?

 

knock -30. is it safe?

 

Yo....the Pwer Fc Will Flash Ses Light At You Of It Knocks Above. 60....so You Are Fine....

 

my timing set at 12deg, i added +5 deg. Is it safe
and what is your timing setting and idle?

thanks

 

my boost is set at 1.45

can you write down your setting? Please!

 

I believe it uses the stock sensor.

It does not adjust timing based on knock

It doesn't come with one and D Jetro is their ecu that converts to map

 

can some1 explain to me what a power FC does and what a S-AFC does?

 

power fc is a stand alone fuel management system. it allows you to tune the fuel curve for different amounts of boost and allows you to change the method by which the ecu gathers air quantity information (maf or map).

the s-afc is a piggyback fuel computer. it uses the stock ecu's fuel map and tricks the ecu into putting in certain percentages of fuel that are more or less than the stock curve, these percentages are left for you to tune. there is also an advertised effect that the safc has that is similar to the eids, it is suppose to smooth out sudden changes in air so that the fuel compensation doesn't cause your engine to stall, i have never actually heard of anyone benefitting form this passive device on an safc possibly because no one knows it exists or how to turn it on. (HAS ANYONE EVER USED THIS ON AN SAFC???). eids however is getting pretty popular and more than a few people have installed it, i'm waiting on the results.

i guess i have a few complaints about the power fc now.
it does not come with map conversion ready.
the support just isn't here in the states.
it's relatively expensive unless you get it used.
it doesn't pull timing to save your engine.

it is more important that it pulls timing in an effort to save your engine because even if it blinks when there's too much knock, what's the most you can do? lift off the gas and hope you don't have to bend over and kiss your *** goodbye or rather your engine's ***. or cry. if there is a built in safety mechanism if something goes terribly wrong like your fuel pump fails or something even more realistic like you're in the middle of a high g turn and you suddenly hit a lean spot on two cylinders that are furthest away from the fuel rail inlet, you'll get more than just a blinking light, you'll get a timing pull that could just save your car. doens't matter how well you build your engine, if you don't tune it safely detonation will always break it.

 

I agree with you totally about the support. It is almost like Apexi isn't really interested in selling the Power FC in the states. The map conversion is very simple though (at least that's what my mechanics told me) and the knock issue all comes down to tuning. As we've seen with many cars on this forum, it is easy to grenade the engine even with the stock knock protection. Go too far and you'll blow no matter what engine management you run, but it would be nice to have the added safegaurd.