I have done quite a bit of looking and reading on In and Out settings using the SAFC-I as a MAF scaler. I'm Finally getting around to installing the MAF in a couple weeks and finish wiring up my SAFC.

Upon my research not many people have a 4th gen with a BBMAF Esp with a 3.0.

The question: Would the in setting for HW-4 In and HW-1 Out (VH41/45DE) ?

For clarification the in/out maf scaling mimics the signal from another vehicles MAF to put me somewhere in sort of AFR range that would be more correct (obviously i know tuning will need to be done)

 

i have it in my car,but im using DE-k injectors,i used the 1in 4out setting and only needed to add like 3% all across the revs to get a good AFR,im about to install a corvette fuel filter/regulator to have 60psi of fuel prssure and remove some fuel to get some timing advance,.....in the future i might try to get a ford lighting maf with cobra 40 lbs injectors to go with the Q45 TB i want to install

 

What size maf are you using shred?

 

PM schmellyfart

 

Chris im pretty sure he tunes with emu

 

check your fuel trims via obdII and adjust the map on the afc until theyre as close to 0 as possible

 

This is all I could find

http://forums.maxima.org/8519219-post11344.html

http://forums.maxima.org/4696180-post1.html

 

Yeah I have seen those but seems as though they pertain to 5th gens. I will most likely be tuning sept 13th ish. Ill post a definitive answer for people seeking to do this in the future.

On a side not did you get the 3.5 maf working properly in your car schmelly?

 

Its still scales the maf voltage with respect to size, so it shouldn't really matter which gen as long as its an safc going from stock to 3.5". Do you at least have a wideband?

Yeah I got it working at WOT. Basically since the EU interpolates two cells side by side, I had 4600 and 6500 next to eachother so the fuel I was dumping to get over the stock limiter was also being dumped from 5k and up.
It does like to ignore my closed loop corrections though, I think I just need to transfer the data to a new file.

 

i'm using a Q45 MAF with DE-K injectors with a 4th Gen ECU

 

Installed my 3.5" BBMAF today along with my SAFC I had it set to 1in 4 out and had to add 13% correction for low throttle and 11-14% for high throttle (corrections +)

Low is set to 0% and high is set to 50%

so far idle when cold is 16.5ish AFR and 15 when warm
14.9 in gear AFR

Cruising speed AFR is 15.6 consistantly
and WOT starts at 12.8 AFR from 3-4k and slowly rises to 13.5 at redline

And yes I do have a wideband but do not have date logging )Innovate Lc-1

 

Nice, are you using a hacked up stock maf or Q45?
Butt dyno results?

 

Hacked up MAF Same tube your using btw schmelly but using a blox Stack and a AEM dryflow

Still have a lot of tuning to dial it in perfectly and then start playing with the vias activiation points.

Butt dyno lags a bit before 4.5 but after 4.5 it hauls to redline

Wondering if i should change vias point from 5k and lower it

 

That's actually my exact setup. Yep that's about how mine feels, except I don't have the power rod installed.

I think I might dyno 3" maf vs 3.5" sometime this winter to see exactly what its doing.

 

I plan om doing some 1/4 mile runs soon with/against my brothers g coupe and seeing how it does activation points

 

My vias was never.connected and i thought it pulled hard

but i have.to fix some issues with the wrong for.the safc. when i try to tuck the wires i get a short and blow the secondary ecu fuse. but that could be because the power tps and tach wires weren't shrink wrapped but they were electrical taped.

i found this out by my tach not working or flickering up and down sporadically but when i pulled the electrical tape off there was a sticky residue on the wire i re soldered it and it was fine

 

Fixed my previous issues. new question

for tuning i had to add 13-15 points of correction across the board to make the car idle.decent and run closed loop. my open loop is in the 13.2-13.5 afr range

i know im.losing timing. So, is there a way to increase injectors pulse width by adjusting the in and out setting on the safc?

for example putting.the in out to 4in 1out made me run rich. would that in turn tuning with that setting increase timing?

 

I don't know dude...I'm probably gonna be in the same boat soon. good luck and all.

 

how about upping the fuel presssure

 

No it will never change timing, manufacturer wont allowed because of the emissions, your timing never changes unless you buy another tuner like aem e-manage blue, ultimate, or aem Fuel and Ignition and others that can adjust timing

 

It indirectly adds/removes timing due to the way it adjusts fuel since it doesn't directly modify the injector signals. I want to say it adjusts fuel by altering the maf signal, but I'm not 100% sure.

 

Yep.

Ignition timing is a function of load and airflow is one of the main parts of that algorithm.