AFC Tuning help, tips, recommendations

[Sick70]

I'm installing an Apex'i AFC Neo. I have a few questions as this is only my 2nd car doing any real tuning on, and the AFC is much different than the SMT6 I've used before.

First, I've heard that I should set the Lo-Throttle setting at 68% and Hi-Throttle at 69% because the ECU is in closed loop anywhere 67% throttle and under? Is this correct? If not, what may be a better setting?

Secondly, is there any type of Fuel Zeroing Calibration with the AFC besides just simply adjusting fuel at your selected points? The SMT6 had a Fuel-Zero setting to dial-in +/- percentages on injector sizing compared to stock sizing.

Also, what would be a decent starting place as far as setting RPM points on the AFC? I would imagine that several important points to get close to would be where obvious fuel requirements change for the engine so that way that AFC can create a decent and accurate fuel graph.
The set-up I'm running is:
- Block: Stock internals w/ MHG
- Intake: Lex AFM, aftermarket intake
- Fuel: TRE 255lph Pump, RC 660's, Aeromotive AFPR
- Turbo: Stock CT-26 @ 16 psi, 24"x12"x3" FMIC
- Exhaust: BIC DDP, BIC test pipe, Blitz Nur-spec catback

As mentioned above I figured several points to set fuel adjustment RPM's would be things like intitial spool, peak boost, redline, etc. As for my set-up can anyone provide any recommendations on where to begin? If it even matters, seeing as the AFC will make a linear chart.

Even if anyone has any experiences, tips, techniques, tricks, or advice for tuning the AFC I'd be glad to hear it! Thanks in advance!

 

[Sick70]

Anybody? Any help or advice is greatly appreciated!

 

[nsngarage]

The neo is supposedly broken for our "karman" sensor cars.. Check your firmware version.. it needs to be higher than 1.104 i think...

 

[mnracer550]

i used the neo on my car and it worked great. I cant remember what i set my throttle points at though. i think i set it at 40 percent and 75 maybe.

 

[CT26smoker]

Yeah, you want the hi/lo throttle points split a ways, as you don't want it to go right from low throttle fuel map directly to hi throttle map.
With a split of some size, the AFC will ramp up, not jump up.

 

[nsngarage]

You have to set low throttle at 68 or 69 and high at 69 or 70 because the fuel is closed look up to 67% in our ecus. And unless the neo firmware is higher than I think 1.104.. do an online search for karman and neo or call apex.. they will update it for free if its not.. I just went through all of this

Sent from my DROID2 using Tapatalk

 

[Devin LeBlanc]

Yep, If its not updated it can possibly pop the motor because it will go lean. I had the same thing happen, luckily it was on a Dyno and we were logging AFR's

 

[Sick70]

So the firmware needs to be 1.104 or higher, I'll take care of that tomorrow and update if needed. But can I have more people chime in on the hi/Lo setting? I'm leaning towards 68% low/69% high because it makes sense. But there are some saying I should have a decent split between the two, I'm not really a "oh well shit, 43.5% low throttle seems right" kind of person, so I'd really appreciate a bit more info to confirm the low/hi at 68/69, just so I know I'm not making any mistakes here.

Again thanks for all the replies!

 

[Devin LeBlanc]

I have mine set a 74/75 no problems here

 

[rwdanthony]

devin are you running the 7mgte with your 7mge-t? would your 74/75 high/low thr point be the same for as a 88 7mgte?

ill be running a similar setup as the OP. lex maf, 560 densos, mkiv tt fp.

 

[Devin LeBlanc]

Yes it would be the same.. Everything is the same on a GTE car but the block and head.. Running full GTE electronics and wiring harness swap.

 

[rwdanthony]

alright cool. same as the op, this is my first time actually tunning and i have a afc neo 1.105

any tips/ advice, or ball park settings would be really helpful!

 

[Devin LeBlanc]

There are no ball park settings, every single car and every single setup is different. None is a like. Get a Wideband A/F and do logs. slowly start adjusting.. Little bits change a good amount so dont go start taking out 25% fuel because you'll pop a piston.

 

[Sick70]

Another question about building logs, we can only tune in open loop correct? Wouldn't the tccs change any setting that I change in closed loop? If so all of my tuning runs must be WOT, right?