RX-7 024

Over a lot of RX-7 car profiles I have looked at, I've seen that most people have bought the Apexi Super AFC. I was just wondering what this system will do for your car. I know it increases and decreased fuel amounts to engine. But other than that what will it help with.

hybridracer

It will help a little with gas milage and also when you lean it out it will probably squeeze a couple hp out of your car.

BDoty311

Works like a performance chip, just better but you have to tune it yourself.

marcus219

My buddy had one in his '87 N/A, full exhaust, intake, ported intake manifolds, he just tuned it by himself and the car seemed to run worse than w/it. Dyno tuning seems to be the only way to get the best results.

Rotorific

iTrader: (1)

You have to know what your doing and what the stock ecu does if you combine both efforts then you can really help your cars performance
getting your car on the dyno helps out alot too because they are (supposed to be) trained professionals that can properly tune your car

Phu5ion

well won't an A/F meter help out a lot if he does it himself so he can know where the car it too rich or lean and adjust the S-AFC accordingly?

rx7_turbo2

I've seen a standard A/F meter compared to a true wideband sensor, don't waste your time with the standard A/F gauge, save your cash and buy a wideband, the standard gauge is only good for the light show it puts on, that's it.

Rotorific

iTrader: (1)

A wideband is what dyno tuners use if you didnt know...I plan on getting a wideband kit when i go turbo never rely on a standard air fuel gauge.....

rx7_turbo2

Most dyno tuners put the sensor at the tailpipe, your better off having it in the downpipe. If your planning on going to the dyno I would suggest welding another bung on the downpipe so the dyno's wideband can go there. And besides alot of good a dyno's wideband does in the shop, when your on the street making changes for yourself.

Phu5ion

yeah i've heard about widebands before, so that does mean you can tune it yourself without having to setup dyno time.

Of course i'm sure it would be an invaluable benefit to schedule some dyno time, because the knowledge of the tech would be very helpful.

rx7_turbo2

Well it depends on the dyno operator. Some know alot about tuning, some just know how to turn the dyno on. Some know how to tune regular cars and have no idea how to tune rotary. If you have alot of knowledge about how the car works and how changes of one thing will affect another than tuning on the street is possible. However for most people the controlled enviroment of the dyno is usefull. Plus certain dynos have the ability to hold the car at different load points, allowing you to tune to those points. Try to avoid the temptation to just go there and do a max power run, spend some time at the dyno and take your time, it might cost you a few extra $$$ but in the long run it will help. Remember to keep a bit of a log, write down all the thigs you want to try before you go there, plus write down all the changes you made and the results of those changes, there is alot of variables that go on, without a log it might be hard to remember.

Cheers

jeremy

iTrader: (1)

doesn't the safc have the ability to hookup to an o2 sensor and monitor a/f?