Hey guys I was just wondering if any of you have or are using them to tune your A/F ratio, and what your thoughts are of them? I would be using it in my 90 mazda rx-7 gtu with a j-spec turbo II swap that is also street ported. Here is what they had up on the hks website.....


From the HKS website:

The first airflow meter correctional device with a built in CPU, the Super AFR corrects the airflow meter map sensor voltage by inputting the characteristics of the airflow meter map sensor into the CPU to calculate the most accurate amount of air flow. --- Since the correction will be made to this specific intake volume, the ratio of fuel will be precise and proportional. The LED screen displays adjustments as they are entered along with RPM and fuel % adjustment (over baseline). The Super AFR is compatible with virtually any fuel-injected 2-12 cylinder vehicle that uses a hot wire, Karmann Vortex airflow meter or pressure sensor.

The Air/Fuel Ratio Correction function of the Super AFR allows complete fuel curve tuning by offering eleven points between 650 and 8000 RPM of adjustment. These points can be arbitrarily moved in 50 RPM increments. Each point of adjustment offers a tuning range of 50% rich to 50% lean from the factory baseline setting in 1% increments. Also incorporated in the Super AFR is the Idle Correction function, where Idle fuel mixture can be adjusted from 50% rich to 50% lean from the factory baseline setting in 1% increments within the idle range of 650-1500 RPM. This offers the ability to adjust idle Air/Fuel ratios as modifications progress and require further tuning to compensate. The response function allows for management of engine response in milliseconds with six points of air meter signal adjustment between 650 and 5000 RPM that can be randomly moved in 50-RPM increments. This function is extremely valuable on applications such as high-lift camshafts, larger injectors or bigger turbochargers because of fuel requirements these modifications call for. Additionally, an Electronic Idle Stabilizer (EIDS) function buffers dramatic airflow meter signal fluctuations, preventing engine stalling or stumbling related to sudden imbalances in air/fuel ratio of airflow meter-equipped vehicles using atmosphere venting blow-off valves.



Also I'm getting a really good deal on it and it has never been installed in a car. Thanks


Matt

 

my friend had the AFR with just **** and a small little green display on his Eclipse. It may be an earlier model than what you are describing . It was super shitty. The display was useless, it just showed like two digits. the ***** were hard to use, and it had no useful datalogging capabilities. Even an SAFC can show you peak values.

Also, he had a Karmann Vortex AFM. Does this work with a flapper-type? Do you have a wiring diagram for it?

I think you should just get an oldschool SAFC or SAFC2. You can get one used for 100 bucks. They are proven and easy to use. If you are going to do a more advanced piggyback you should get an Rtek.

 

Alright thanks. The car will be a continual progress so I might as well go with the rtek.