i've been using S-afc 1,2,Neo for a long time now... but mostly on piston motors


i've been contemplating getting a cheap one to control some 800 or 1000CC secondaries on my S5... (BnR stage 3 FMIC etc etc)

but i was curious about how it works with rotors..


since the primaries are firing only at low load/rpm... and the larger secondaries are off.. I wont be doing any correction (except some fine tuning maybe)

and it's only when i pass 3,800 RPM that I have to start doing the heavy correction for the larger secondaries?


does the AFC handle this ok? or is there a big "hiccup" during the transition and sudden large correction for the secondaries?


what if u have a quick spooling turbo that spools before 3,800? will the secondaries kick on? or it will try to tax the primaries until the 3.8 mark?

 

800's maybe.....1000's i wouldn't do it with an safc. You'll be maxxing out the % of trickery you can trick the ecu.

If you have a quick spooling turbo, the secondaries NEED to come on before 3800, but with the stock ecu, and an safc, they won't. Standalone will be your best option here.

 

This will happen even with 720cc injectors. As long as your engine NEEDS that much fuel, and you are not just putting a larger overhead in there for adjustment, then you should be able to turn them down to a good point. If they are way to big and you need to turn them down more then 50%, you need to go with smaller injectors.

The SAFC does not know there is a staged injection system nor does it care. It works out great on a lot of rotary engines but as you know, the adjustment abuility is limited.

On a setup like yours, I would not use the SAFC. I don't like it even with my N/A. Look into the Rtek2.0 if its available for your ECU or Greddy Emanage which is a piggy back or stand alone. The Rtek 2.0 I believe lowers the staging point for the secondaries so they come on soon. I don't think this is something you can adjust though.

You will have adjustment over timing and fuel maps as well as a few other items the SAFC will not do.

 

Rtek would of been nice

but it's only for the S4 boys... I have an JDM S5...

for the price of an E-manage Ultimate..

I could buy a plug n Play Power FC setup...


i was looking for a cheaper alternative...

Panspeed chipped Ecu for example..

Removes Speed Limit, Boost cut and fuel cut.. tweaked Timing and fuel

slap some bigger secondary injectors... and then use an AFC 2 for fine tuning..

total cost of ~$350

AFC or E-manage will be right around a grand all said and done