ok newbie here when it comes to preformance mods.

what is SAFC
&
is it true that it can be used on a NA engine to gain a few extra HP?

how does it accomplish this?

thanks

 

To get a smooth idle & sliky smooth power, Mazda programmed the ECU on the rich side.

You can lean it for a little more power & fuel economy, but it will run a little rough.

 

SAFC reads in the amount of Air Flow, and Converts it + or - to trick the computer into putting more or less fuel in.

 

Running leaner than stock also heats up exhaust temperatures, resulting in destroyed cats, glowing exhaust, etc.

 

so should i get a straigh pipe before i get a safc? would that make a difference?

Thanks

 

^^ Well upgrading your exhaust will help with or without an SAFC. Now an SAFC can give you a few extra horsepower, but it needs to be tuned properly. I use mine for lowering the low rpm range fuel, so I can get a little better fuel economy. For the cost it is an ok mod, but for a few hundred more you can just go Megasquirt so you might want to look into that. Search megasquirt on the 2nd gen forum or go to the MS section.

 

Not true. I've never seen an exhaust on a rotary glow red from a lean mixture, only rich.

Running too lean can result in cat-melting EGTs though. Never actually heard of that happening...