---===The Official MAFT-Pro Thread===--- - Page 199 - 3000GT/Stealth International Message Center

TurboBob · 03-29-2007, 05:14 PM

put about 10 % afterstart in.

Be sure you have selected VE table 2. (this helps the drop-throttle stalling)

Turn Wideband tracking off for initial tuning. Tune the mainscale for about 13.* - 14.2 when cruising and slight acceleration. Then use the low load page to tune the idle to about 13.5 - 14.5.

For best driveability, tune to the rich side and let the Pro lean it out.

Then, after it runs decently, turn the Part Throttle Tracking back on.

Bob

OwnGTP/WantRTTT · 03-29-2007, 05:57 PM

Here's my problem, something is causing the tune to drift. I set the mainscale for what it should be mathematically (-35.5%) and it will idle for a short time right around 14.7-15.2 AFR. Then the tune continues to drift towards 12.8-13.2 and doesn't even respond to the changes I'm making. I've taken the mainscale all the way or max correction (-64.0%) just for the hell of it and nothing happens. It should kill the car but it sits at 13.0.

Bob, you have chance for a phone call? I'm local, I'll PM you my number.

runner4053 · 03-29-2007, 07:52 PM

Quote:

Originally Posted by OwnGTP/WantRTTT

Here's my problem, something is causing the tune to drift. I set the mainscale for what it should be mathematically (-35.5%) and it will idle for a short time right around 14.7-15.2 AFR. Then the tune continues to drift towards 12.8-13.2 and doesn't even respond to the changes I'm making. I've taken the mainscale all the way or max correction (-64.0%) just for the hell of it and nothing happens. It should kill the car but it sits at 13.0.

Bob, you have chance for a phone call? I'm local, I'll PM you my number.

Did you try the ECU reset? Bob is pretty busy. You're results won't be instant. Set it to what it should be, reset your ECU, then drive a little while logging. Then tune off of your log. You're not going to get anywhere playing with your idle settings. Your car will idle different then it drives everywhere else. You want your mainscale to be correct for almost everything. If you adjust it just for idle, then your car will only be right for idle.

OwnGTP/WantRTTT · 03-29-2007, 08:21 PM

Yeah I reset the ECU. It just seems like the car won't respond to any of the changes I'm making. All the sensors read right though. I'll keep playing with it.

xeudoxus · 03-29-2007, 10:26 PM

I dont know if this was talked about in the last 199 pages, but I have an apexi s-afc that is perminatly mounted in the car. would there be any benefit to running the car this way... for minor corrections while driving.

(3 bar map)--->---v.....................^--->---v...................^-->---(ecu)
..........................v.....................^..........v...................^
..........................v.....................^..........v...................^
................(apexi afc in pressure mode)...(maft pro speed d mode)

or this way

(3 bar map)--->---v...............^--->---v...................^-->---(ecu)
..........................v...............^..........v...................^
..........................v...............^..........v...................^
...............(maft pro speed d mode)..(apexi afc in karmin mode)

or just for monitoring / playback

(3 bar map)--->---v----->------->----->-->--v..............^-->---(ecu)
..........................v....................................v..............^
..........................v....................................v..............^
.......(apexi afc in pressure mode).....(maft pro speed d mode)

The afc is staying in the car no matter what.

What do you guys think?

-Matt

runner4053 · 03-29-2007, 10:31 PM

Quote:

Originally Posted by xeudoxus

I dont know if this was talked about in the last 199 pages, but I have an apexi s-afc that is perminatly mounted in the car. would there be any benefit to running the car this way... for minor corrections while driving.

PHP Code:


			
(3 bar map)--->---v                               ^-->--v                         ^-->---(ecu)

                         v                               ^       v                          ^

                         v                               ^       v                          ^

                        (apexi afc in pressure mode)    (maft pro speed d mode)

or this way

(3 bar map)--->---v ^-->--v ^-->---(ecu)
v ^ v ^
v ^ v ^
(maft pro speed d mode) (apexi afc in karmin mode)

or just for monitoring / playback

(3 bar map)--->---v----->------->----->-->--v ^-->---(ecu)
v v ^
v v ^
(apexi afc in pressure mode) (maft pro speed d mode)

The afc is staying in the car no matter what.

What do you guys think?

-Matt

Wow, that's confusing....The SAFC is really unnessecary. This setup allows for very find adjustments. I don't see why you couldn't run speed density and "adjust" the output signal with the SAFC....but it'd be redundant and overcomplicated.

xeudoxus · 03-29-2007, 10:45 PM

sorry it is fixed now

xeudoxus · 04-01-2007, 09:56 PM

I wired it like the 3rd example

-matt

msassoon · 04-05-2007, 08:19 AM

OwnGTP, the ECU is not learning anymore if the O2 sensors are disconnected. What did you set for Vehicle Select?

OwnGTP/WantRTTT · 04-05-2007, 09:56 AM

I have it set for Vehicle 0.

What should it be?

03-29-2007, 05:14 PM	#1981 (permalink)
TurboBob Resident mad scientist Join Date: Jan 2003 Location: Near Detroit Drives: 86 GN 91 RT/TT Trader Rating: (17)	Re: ---===The Official MAFT-Pro Thread===--- put about 10 % afterstart in. Be sure you have selected VE table 2. (this helps the drop-throttle stalling) Turn Wideband tracking off for initial tuning. Tune the mainscale for about 13.* - 14.2 when cruising and slight acceleration. Then use the low load page to tune the idle to about 13.5 - 14.5. For best driveability, tune to the rich side and let the Pro lean it out. Then, after it runs decently, turn the Part Throttle Tracking back on. Bob __________________ Need a datalogger? Check out the Scanmaster 3 PM me about ECU mods for 8000+ RPM rev limits !!!!!!!! Stock = 7300 RPM Stage 1 = 8060 RPM Stage 2 = 8200 RPM Stage 3 = 8400 RPM Stage 4 = 8800 RPM (By request only) 1991 Stealth RT/TT, Grooms Shortblock, 13G's. My Stealth is for sale, 65000 miles, runs perfectly. $6,500 (a bargain)

03-29-2007, 05:57 PM	#1982 (permalink)
OwnGTP/WantRTTT Stealth Aficionado Join Date: Jun 2002 Location: RH+Fnt,MI/Houston,TX Drives: 1995 Stealth TT Trader Rating: (34)	Re: ---===The Official MAFT-Pro Thread===--- Here's my problem, something is causing the tune to drift. I set the mainscale for what it should be mathematically (-35.5%) and it will idle for a short time right around 14.7-15.2 AFR. Then the tune continues to drift towards 12.8-13.2 and doesn't even respond to the changes I'm making. I've taken the mainscale all the way or max correction (-64.0%) just for the hell of it and nothing happens. It should kill the car but it sits at 13.0. Bob, you have chance for a phone call? I'm local, I'll PM you my number. __________________ Tony M. 1995 Dodge Stealth R/T Turbo - 12.46@115.77 2007 Dodge Ram 1500 4x4 - 15.2 mpg

03-29-2007, 08:21 PM	#1984 (permalink)
OwnGTP/WantRTTT Stealth Aficionado Join Date: Jun 2002 Location: RH+Fnt,MI/Houston,TX Drives: 1995 Stealth TT Trader Rating: (34)	Re: ---===The Official MAFT-Pro Thread===--- Yeah I reset the ECU. It just seems like the car won't respond to any of the changes I'm making. All the sensors read right though. I'll keep playing with it.

03-29-2007, 10:26 PM	#1985 (permalink)
xeudoxus My KungFu Is Strong Join Date: Feb 2003 Location: West Plains, MO Drives: 1992 3000GT VR-4 Red Trader Rating: (4)	Re: ---===The Official MAFT-Pro Thread===--- I dont know if this was talked about in the last 199 pages, but I have an apexi s-afc that is perminatly mounted in the car. would there be any benefit to running the car this way... for minor corrections while driving. (3 bar map)--->---v.....................^--->---v...................^-->---(ecu) ..........................v.....................^..........v...................^ ..........................v.....................^..........v...................^ ................(apexi afc in pressure mode)...(maft pro speed d mode) or this way (3 bar map)--->---v...............^--->---v...................^-->---(ecu) ..........................v...............^..........v...................^ ..........................v...............^..........v...................^ ...............(maft pro speed d mode)..(apexi afc in karmin mode) or just for monitoring / playback (3 bar map)--->---v----->------->----->-->--v..............^-->---(ecu) ..........................v....................................v..............^ ..........................v....................................v..............^ .......(apexi afc in pressure mode).....(maft pro speed d mode) The afc is staying in the car no matter what. What do you guys think? -Matt __________________ Member #2275 RMG 2006 Pictures Best Time:1/4mile: 12.85 @ 101mph Engine:Crower Forged Rods, Ross Forged Pistons (.40 over), ARP Head Studs, Ported / Polished Heads, 60k Tune Up, EGR Plates, Vac Reduction, MSD Super 8.5mm Plug Wires, NGK Iridiums 1 Heat Range Colder Gapped @ .32, 3rd Gen Lifters, Apexi Blow-Off Valve, Fully Rebuilt Long Block. Exhaust:Modified OBX SS Downpipe 3" (With SS 8" Flex Section), Custom Catback 3" (With Flowmaster 80 Series 43083 Muffler, Dual Exit) and Brola Stainless Tips, Gutted Precats, Removed Main Cat. Interior:Custom Fiberglass Dash (With Center Channel Speaker), Custom Fiberglass Headliner (With Apexi AVC-R and S-AFC Pods), Custom Fiberglass/Aluminum A-Pillar (With 2 60mm Gauges), 2002 GM Rearview Mirror (With OnStar, Compass, and Outside Temp), Smokin's Brushed Aluminum Defrost Vents, Reverse EL Gauges. Body:Cross Drilled/Slotted Rotors Zinc Coated, Static Black Antenna, Center Mounted Sirius Antenna, 99 Rear Garnish, Front 25% Tint Rear 15% With 15% Eyebrow (Legal). Turbos:Rear 9b / Front 15g, DSM Sidemounts Fuel:PIR Aluminum Dual Pump Sending Unit, 450cc Injectors, Walbro 255lph Fuel Pump (Hot Wired), Ek2 Fuel Rail Loop, Ek2 Fuel Pressure Gauge. Drivetrain:Fidanza Lightweight Flywheel, New Stock Clutch/Pressure Plate, Fully Rebuilt Trans/TC - 25 Spline (By me ) Electronics/Audio:Maft-Pro SD, Apexi S-AFC-I, Apexi AVCR @ 1.20Bar, Apexi Turbo Timer, Clarion DXZ935 5.1 Headunit, Clarion 5 Disk CD-Changer, Clarion Siruis Unit w/ FREE Channels , Polk MOMO 6.5 Center Channel Speaker, 3 10" MTX 6000's (With Bandpass Box). Last edited by xeudoxus : 03-29-2007 at 10:44 PM.

03-29-2007, 10:45 PM	#1987 (permalink)
xeudoxus My KungFu Is Strong Join Date: Feb 2003 Location: West Plains, MO Drives: 1992 3000GT VR-4 Red Trader Rating: (4)	Re: ---===The Official MAFT-Pro Thread===--- sorry it is fixed now

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04-01-2007, 09:56 PM	#1988 (permalink)
xeudoxus My KungFu Is Strong Join Date: Feb 2003 Location: West Plains, MO Drives: 1992 3000GT VR-4 Red Trader Rating: (4)	Re: ---===The Official MAFT-Pro Thread===--- I wired it like the 3rd example -matt

04-05-2007, 08:19 AM	#1989 (permalink)
msassoon Forum Member Join Date: May 2004 Location: Berkshire, England Drives: GTO SC ATX Trader Rating: (1)	Re: ---===The Official MAFT-Pro Thread===--- OwnGTP, the ECU is not learning anymore if the O2 sensors are disconnected. What did you set for Vehicle Select? __________________ Black 1991 Ripp Modds Supercharged GTO DOHC MAFT Pro running speed density. Erebuni front bumper and side skirts Racetech Exhaust. EK2 shorties and 3SX Downpipe Custom transmission and oil cooler Import Precision VLS doors 18" Chrome VR4 wheels and Chassis Dynamics Lowering springs '99 Sail panels Lightened crank pulley EK2 fuel rail adapter. Underbonnet bling Too much custom stuff to mention

04-05-2007, 09:56 AM	#1990 (permalink)
OwnGTP/WantRTTT Stealth Aficionado Join Date: Jun 2002 Location: RH+Fnt,MI/Houston,TX Drives: 1995 Stealth TT Trader Rating: (34)	Re: ---===The Official MAFT-Pro Thread===--- I have it set for Vehicle 0. What should it be?

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