---===The Official MAFT-Pro Thread===---

[TurboBob]

Originally Posted by Patryn

How does the MAFT react if you have it setup for AFR tracking, but leave the stock O2 sensors plugged in?

there are 2 modes of afr tracking, WOT and PT (part throttle).

WOT afr tracking works well with the stock O2s plugged in. PT Tracking requires that the stock closed loop be turned off, which means unplugging the O2's on a 3S.

Bob

[gearheadvr4]

If you unplug the stock O2's then Maft Pro takes complete control of AFR? Is there an output from the Maft Pro to the ECU that gives it AFR numbers? If not, then what can you do about the ecu throwing a code? Any benefit to letting the Maft Pro handle everything?

Looking at the setup diagrams I might have missed it but I didn't see any instructions for AFR tracking or setup. I'm interested in doing this since I just got the wideband.

[TurboBob]

Originally Posted by gearheadvr4

If you unplug the stock O2's then Maft Pro takes complete control of AFR? Is there an output from the Maft Pro to the ECU that gives it AFR numbers? If not, then what can you do about the ecu throwing a code? Any benefit to letting the Maft Pro handle everything?

Looking at the setup diagrams I might have missed it but I didn't see any instructions for AFR tracking or setup. I'm interested in doing this since I just got the wideband.

unplugging the O2's will cause a CEL. The car continues to run fine, but can no longer adjust out your part throttle tune. The wideband is connected to the Pro, and the Pro manipulates the airflow signal to the ECU to achieve the desired AFR.

To fix the CEL, unhook the bulb....

The driveability can be a bunch smoother, as you can dial in part throttle fuel to match your boost.

The WOT tracking is in the manual, the part throttle tracking is not yet.

Bob

[3000GT MR]

how does the maf-pro boost controller compare to profec, and other EBC?

[TurboBob]

I've not used the others but in my opinion the Pro boost controller works at least as well as the various boost controllers.

Bob

[Mike1992]

Questions:

I've got my Innovate LM-1 wired into my Maft Pro and Scanmaster 3
LM-1 is scaled 0 = 10:1, 5 = 20:1 on both analog outputs so it reads out correctly on my Scanmaster display.
Well, of course if I choose the LM-1 wideband (In Maft Pro) my charts will now be off because I beleive the LM-1 from the factory throws a 0-2v output? So I chose the AEM Wideband in my Maft Pro unit which is looking for a 5v input. Not sure if this is correct.

Is this how I should have things setup or am I over complicating things?

My wideband tracking doesn't seem to be working but, I seem to be getting the proper A/F on the display of the Maft. I'm running 6 psi in speed density mode and my wideband/scanmaster is showing in the 14 A/F range at WOT with no fuel adjustments and yet no knock. I know this is lean as hell and I have my wideband tracking parametets set to lean out 5% and richen up 25% and it doesn't seem to be doing anything. Yet my H fuel trim is pegged at 81%

Also my idle is still lean, I've tried adjusting the low fuel tuning section in the 400,800,1200 range + or - 3-10% and my wideband/scanmaster is always showing in the 15-16 A/F not matter what I try.... My L fuel trim is also pegged 81%

I'm starting to get fed up with it and am seriously thinking about selling it all off ECU, Wideband. Scanmaster, Maft Pro and buying AEM EMS.

[TurboBob]

Originally Posted by Mike1992

Questions:

I've got my Innovate LM-1 wired into my Maft Pro and Scanmaster 3
LM-1 is scaled 0 = 10:1, 5 = 20:1 on both analog outputs so it reads out correctly on my Scanmaster display.
Well, of course if I choose the LM-1 wideband (In Maft Pro) my charts will now be off because I beleive the LM-1 from the factory throws a 0-2v output? So I chose the AEM Wideband in my Maft Pro unit which is looking for a 5v input. Not sure if this is correct.

Is this how I should have things setup or am I over complicating things?

My wideband tracking doesn't seem to be working but, I seem to be getting the proper A/F on the display of the Maft. I'm running 6 psi in speed density mode and my wideband/scanmaster is showing in the 14 A/F range at WOT with no fuel adjustments and yet no knock. I know this is lean as hell and I have my wideband tracking parametets set to lean out 5% and richen up 25% and it doesn't seem to be doing anything. Yet my H fuel trim is pegged at 81%

Also my idle is still lean, I've tried adjusting the low fuel tuning section in the 400,800,1200 range + or - 3-10% and my wideband/scanmaster is always showing in the 15-16 A/F not matter what I try.... My L fuel trim is also pegged 81%

I'm starting to get fed up with it and am seriously thinking about selling it all off ECU, Wideband. Scanmaster, Maft Pro and buying AEM EMS.

you are set up correctly, and this is exactly how my car is set up.


Thats too lean for WOT, but we need to be sure things are reading correctly. I actually turned my tracking off, as my wb sensor is in my test pipe and my downpipe is leaky. The flex section is busted and it causes my wideband to read falsely lean.

I actually tune my car for trims at 81, as it makes it easier to tune, the car transitions into boost smoother, etc. Once the trims are bottomed at 81,81,81, then watch the O2trim (O2t on the scanmaster) I shoot for around 80-90 once fully warmed up

To know if your tracking is working, watch 2 parameters. TAF is Target AFR and will read what you have programmed into the WOT Tracking page. Also watch CF this is correction factor and indicates the amount of correction the system is adding/subtracting. What are the enable settings in the WOT Tracking set to?

Bob

[TurboBob]

What is your O2 trim reading at idle?

The ecu can ignore the MAF input if it is too far off, sometimes you need to blip the throttle a little once in a while when figuring out the idle tuning.

Bob

[TurboBob]

what injectors are you running? I can send you my Bin and the current software. I am still running stock injectors. I have EVO injectors ready to go in, just no real need at the moment...

Bob

[Mike1992]

I'm running stock injectors in speed density mode / GM Temp Sensor and GM 3bar map. I don't beleive I have a leak in my downpipe anywhere before the wideband o2 sensor, its located in the first bend of the rear downpipe section.

Here's a list of setting's I pulled off my Maft Pro, hopefully you find something set up wrong as my idle is very very erratic and in the 15-17 range now. I beleive I'm looking at the o2's cycling on my scanmaster under o2E and with -3 in 400/800/1200 I'm in the 80-90 range but it sometimes cycles out.

All setting were taken with the car off

PT Tracking - I hope this is setup off as I have both my o2 sensors connected.
Idle TPS 0.0
Idle RPM 736
Idle A/F 14.7
Cruise TPS 2.0
Cruise RPM 1792
Cruise Load 91.0
Cruise A/F 14.7
Lean Load 84.5
Lean Delay 10.0
Lean A/F 16.0
Gain 0.0
Enable Delay 95

Tune Response
TPS Enrich 0.40
TPS Decay 0.60
TB Size 6
TPS Max 104
Map Enrich 0.10
BST Enrich 0.10
Map TPS min 0.800
Map RPM min 2560
Maf Lim TPS 0.0
Maf Limit 0.0
Maf /KRPM 0.0

Air Temp - Not sure if this is set right
-40 0.0%

AFR Tracking
Min TPS 4.4% WOT Shows 4.6%
Min RPM 2400
Min Load 100.1 / Changed this morning, was set to 160
Lean Limit 5%
Rich Limit 25%
Gain 4
A/F Target 11.5 Across the RPM band, seems to be slightly working now that I adjusted Min Load down.

System Setup
Main Scale 0
V-Out1 Set 2.560
V-Out2 Set 3.800
Afterstart 13.5
Lo Load pt 32.5
Mi Load pt 100.1
Hi Load pt 143.0
F Out Max 0
TM Base 0
TM Correct 1.23
AF TRDelay 0
FE Smooth 30
Use VE Table #2
Spk Base 15.0

Config Select
Mode 2
# of Cylinders 6
Displacement 3.0L
Airflow Mode / Speed Density
Map Source GM 3Bar
Load Source Use Map
Baro Source Sea Level
F-Out Mode 3000gt / 2g DSM
V-Out1 Mode Use Set Point
V-Out2 Mode Use Set Point
AFR Source 5v AEM Gauge
F-In Mode None
Flow Error Mode SD/MAF