Do we really need a S-AFC to rich/lean our cars?
#4
Re: Do we really need a S-AFC to rich/lean our cars?
Originally posted by SPDST3R
Do we really need a S-AFC to rich/lean our cars?
Do we really need a S-AFC to rich/lean our cars?
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#10
I dont know a damn thing
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if you have an na and you say plan to get a pair of 550s you must have a lot of mods and a properly tuned piggyback (safc) or a standalone like the aem ems or haltek for your car to properly run no excuse me run at its full potential...or else it will run like **** and rich rich rich if you have a turbo then you can run a pair of 720s with a dp and full exhaust and you wont need an AFM If you just want to change your junk stock then just get an apexi safc...thats my choice
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Re: Do we really need a S-AFC to rich/lean our cars?
Originally posted by SPDST3R
#15
RX-7 Bad Ass
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Re: Re: Do we really need a S-AFC to rich/lean our cars?
Originally posted by jspecracer7
The answer to that is NO. You do not need an S-AFC to lean out a rotary. You can ALSO lean it out by using an aftermarket fuel pressure regulator.
The answer to that is NO. You do not need an S-AFC to lean out a rotary. You can ALSO lean it out by using an aftermarket fuel pressure regulator.
Aftermarket fuel pressure regulators typically come in two flavors -
- adjustable base rate 1:1 ratio regulators for using an upgraded fuel pump that overwhelms the stock FPR and runs your fuel pressure too high
- rising rate FPR's that let you set a rising ratio of fuel pressure to boost to richen up your car under boost.
For a non-turbo application, there's really not an option for an FPR to lean the car out - it would lean out the whole powerband, where it really needs to be tuned at specific points. Not to mention if you drop the pressure too far, you'll have atomization problems having the line pressure too low for the manifold vacuum.
For turbo applications, both of the above devices apply. A rising rate FPR, in my opinion, is a bad idea. They're a royal pain to tune properly, and really don't offer that much adjustability - they're only good for a very moderate power gain.
On many occasions on a turbo, though, you need an adjustable FPR to set your base rate. A rewired Walbro pump will really jack up your fuel pressure - the extra flow overwhelms the stock FPR. Been there, done that.
The Super-AFC is a killer device for tuning in the fuel mixture - it's easy to use, it works great, it looks great, and it's reasonably priced.
Dale
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