maft pro-timing control and more

[dumbo]

Has anyone got the spark control working, i just finally tried to start my car after about 2 months, went na-t. i updated my maft pro to version 5.11

my car is throwing codes 24,32 intake air temp, and air flow meter(i'm guessing cause i am running speed density.

right now i have the timing control hooked up like this.. http://www.turboninjas.com/supra/maf...0a Supra.pdf


but i think it has to be like this right? http://www.fullthrottletech.com/atta...6&d=1216749530

it doesn't even try to fire,
i can smell fuel from the tail pipe so i figure its spark.(well the spark control that is)

any help or advice is appreciated, thanks.

i wanna get some input before i rewire it and take the timing control out for now.

it seems almost impossible to find any recent literature on the maft pro.

 

[GC89]

neither of your links worked for me, but do you have it hooked up like this There was an old diagram released before this one that didnt show the resistors but they eventually figured it out and added them.

 

[dumbo]

ok mine does not have the resistors hooked up yet, i was thinking that might be it but want to confirm. are you running the maft pro timing control??


thats what my two links showed. do you know anything about cutting the r7 resistor?

 

[dumbo]

ok i found some more recent info(few months old) on full thotlle, and people have wired the resistors in for timign control. and are claiming it works good! thanks gc89.

i'm gonna wire it in a few days when im off work, i'll let you guys know if anyone is interested.

 

[grimreaper]

hell ya! if that thing controls timing, i need one! Its my understanding it monitors itthough....

 

[dumbo]

hell ya! if that thing controls timing, i need one! Its my understanding it monitors itthough....

i've read it does monitor it TOO, but it "spikes", and you need to open the unit and cut the r7 resistor. but this is just stuff i've researcha nd read in the past two months.

http://www.turboninjas.com/supra/maft/8%20- Vehicle Specific Info/MK3 Supra/r7 resistor.jpg

just got to find out why i'm throwing those codes--assuming cause i have no afm connected.

 

[sneakypete]

code 24 and 32 are normal when running speed density.

 

[AJ'S 88NA]

code 24 and 32 are normal when running speed density.

Normal but avoidable. CRE has a write up on it how to get rid of the codes. I'll try to find it.http://www.fadingworld.com/Supra/El...ro/MAFTwriteup/7M-XXX/MAFT Pro and Codes.html

 

[dumbo]

Normal but avoidable. CRE has a write up on it how to get rid of the codes. I'll try to find it.http://www.fadingworld.com/Supra/Electrical/MAFT Pro/MAFTwriteup/7M-XXX/MAFT Pro and Codes.html

thank you, i've seen that diagram at the bottom of the page so many times before but i didn't understand what it meant until i read that write up!! I hope CRE puts his two cents in here so i can thank him!!!!

 

[CRE]

$.02








As for timing control, that was worked out by Bob and a MKIII owner on here... I presume they tested it. I have yet to set it up on my car though.

R7 is removed only if you're using timing monitoring... it has nothing to do with timing control itself. The two are handled by completely separate parts of the MAFT Pro.

If you notice spikes in the timing monitor replay from a log, it's a known issue. The problem lies in the math in the TunerPro software so it's not critical to your car's operation and as mentioned, it doesn't affect timing control either.


The only way to remove the airflow meter code is to pre-power the MAFT Pro (power it up before the ECU gets power). I've set mine and AJ's 88 to power the MAFT Pro through a relay via the Acc circuit and then from +B. The two trigger signals to the relay MUST be isolated with diodes. Then,, when you start the car from then on, you turn the key to Acc, wait a couple seconds and then crank as usual. This will prevent the last code. I plan on adding a writeup for this to my site, but have yet to make the time for it.

If you use the resistors to remove the HAC and THA error codes you need to disconnect any wires you have running to them from the MAFT Pro. The nice thing is this also frees up to outputs for other uses. I recommend using this method (resistors) over supplying the signals from the MAFT Pro.

 

[dumbo]

thanks cre, i do plan on getting to that but not quite yet, i just fix the timign control and my car actually started and idle, lil rough though.

my air fuel was at 18:1 at first but i set my timing and disconected my o2 sensor, and then i played witht he unit and got it down to 14 at idle,

but now i'm getting codes 14-no IGf signal to ecu, is that because its cut for the timing control?? doesn't say how to trouble shoot in tsrm.

and 52, guess my damn signal knock sensor isn't happy with me(i spliced the two together) not sure what i'm gonna do with this one


is there really any advantage to having the stock o2 connected??

 

[sneakypete]

is there really any advantage to having the stock o2 connected??

yes... its a good idea to leave the o2 connected so you can get a good base tune dialed in. you want to satisfy the ecu before you go and remove the o2 sensor. with the o2 connected and before you mess with any fuel settings on the pro, adjust the fuel pressure until you can get the vf signal as close to 2.5 as you can. then adjust the mainscale to get it even closer.
then you go and tune you lo mid and hi load tables after that

 

[grimreaper]

once you remove the o2 sensor, it isnt going to matter how happy the ecu is in closed loop. that is the goal of pulling the stock o2, to keep it in open loop all the time so that a piggy back can actually have control over af ratios. vf jumps out the nearest window

 

[CRE]

^^^ Precisely. Tuning for Vf is only good if you're planning on letting the TCCS maintain lambda in closed loop.

 

[dumbo]

ok this may seem dumb, but what is the "Vf" sorry guys.
i've been messing around with it and i'm gonna hook the labtop up and try and log some ildeling and what not,(cars on jack stands still)

but the car is running extremly well so far

as for my code 52(knock sensor) will it retard my timing? or is it just the pesky dummy light i gotta deal with?

i wish there was a quickstart for version 5.11, its a bit different than 4.6-any thoughts?

 

[CRE]

That code 52 is going to cause the ECU to pull timing and add a bunch of fuel.

VF:
To put it simply, it's an output used by the ECU to indicate a number of factors. The most common use for it here is to monitor how the ECU is adjusting fuel.

http://alflash.com.ua/vf1.htm

 

[dumbo]

so i spliced the knock sensors under the intake manifold, is there any way i can "trick" the ecu, i know the're there for the engine safety but i dont want take off the mailfold. no do i know how i would fix it at all

when i spliced them i spliced both wire, is the wire thats wrapped around the outside just to reduce noise or whatever

any reason you guys can think of why my maft shows afr like 9.0:1 and my gauge shows like 14-15:1

i'm possitive i wired it all properly and soldered everything

 

[dumbo]

ok i just rewired my knock sensor/spliced two on under the glove box about 3-4inches from the ecu i used this write up and so far so good http://www.supras.com/06/techcenter/display.php?QID=69

but i did reuse my ks connector


but my idle just seems a little erractic and af goes lean 18:1 and then stoich,
i'm waiting for my throttle cable and i will drive it and log some runs and see

but ANY advice i is recommened thanks guys.

 

[dumbo]

not sure if anyone is reading this still but.. i got the labtop hooked up and logged some idleling and low revs.

neways if some one wants to help out

------------------------
TunerPro Bin Data Export
------------------------
Source File: dean.bin
Source Definition: TPro500Vehicle2.xdf

------------------------------
Constants
------------------------------

Vehicle Select 02
Number of Cylinders 6
Displacement 2.96 Liter
Frequency Out Mode 0x04
Airflow Source 0x00 Select
Manifold pressure source 00
Load Source 0x00
Barometer Comp Mode 00
V Out1 Mode 0 Select
V Out2 Mode 0 Select
AFR Source 1 Select
Freq In Mode 0
Aux 1 mode 00
Main Scale -33.00
Volts Out 1 Limit 2.45 limit
Volts Out 2 Limit 3.53 volts
Afterstart enrichment 0.00
Tune Load Point, Low 36.40
Tune Load Point, Mid 100.10
Tune Load Point, High 143.00
Freq Out Max 0
Timing Monitor, Base Adjust 0.00
Timing Monitor, Correction 1.27
FE Smoothing 30
Boost control TPS Spool 2.50
Boost control RPM Spool 2400 RPM
Boost control TPS Start 3.70 Volts
Boost control PSI Start 5.00 PSI
Boost control DC% Start 10.00 Percent
Boost control PSI Set 10.00 PSI
Boost control PSI Aux 10.00 PSI
Boost Control Gain 4.00
Boost Control DC% Start Aux 10.00 Percent
Boost Control Max RPM 0.00
AFR Min TPS 4.90
AFR Min RPM 3200
AFR Min Load 166.50
AFR correction lean limit 10.00
AFR correction rich limit 10.00
AFR correction gain 4.00
AFR Aux % 0.00
AFR Tracking, Enable delay 0.00 Seconds
TPS Enrichment 0.50
TPS Decay 0.80
Throttle Body Size 7
TPS MAP Max 104.06
MAP Enrichment 0.40
Boost Enrichment 0.15
MAP TPS Min 0.40 Volts
MAP RPM Min 2560.00
MAF Limit TPS Threshold 0.00 Volts
MAF Limit 0.00
MAF Limit / KRPM 0.00 Grams/Sec
MAF Limit RPM Min 0.00 RPM
MAF Limit Time 0.00 seconds
Part Throttle Tracking Idle TPS 0.00
Part Throttle Tracking Idle RPM 640.00
Part Throttle Tracking Idle A/F Ratio 13.50
Part Throttle Tracking Cruise TPS 0.00
Part Throttle Tracking Cruise RPM 2560.00
Part Throttle Tracking Cruise Load 91.05
Part Throttle Tracking Cruise A/F Ratio 14.50
Part Throttle Tracking Lean Load 84.55
Part Throttle Tracking Lean Delay 10.00
Part Throttle Tracking Lean A/F Ratio 16.00
Part Throttle Tracking Gain 15.00
Part Throttle Tracking Startup Delay 74.51 Percent
Enhanced TPS RPM threshold 4800.00
Enhanced TPS Load Threshold 188.24 KPA


------------------------------
Flags
------------------------------



------------------------------
Tables
------------------------------

VE table

MAP(Kpa) RPM
00 400 800 1200 1600 2200 2800 3400 4000 4600 5200 5800 6400 7000 7600
320 78.0 80.5 83.5 87.0 90.0 93.5 93.5 92.5 91.5 91.0 90.5 90.0 90.0 90.0 90.0
300 77.0 80.5 83.5 87.0 90.0 93.5 93.5 92.5 91.5 91.0 90.5 90.0 90.0 90.0 90.0
280 77.0 80.5 83.5 87.0 90.0 93.5 93.5 92.5 91.5 91.0 90.5 90.0 90.0 90.0 90.0
260 77.0 80.5 83.5 87.0 90.0 93.5 93.5 92.5 91.5 91.0 90.5 90.0 90.0 90.0 90.0
240 77.0 80.5 83.5 87.0 90.0 93.5 93.5 92.5 91.5 91.0 90.5 90.0 90.0 90.0 90.0
220 77.0 80.5 83.5 87.0 90.0 93.5 93.5 92.5 91.5 91.0 90.5 90.0 90.0 90.0 90.0
200 77.0 80.5 83.5 87.0 90.0 93.5 93.5 92.5 91.5 91.0 90.5 90.0 90.0 90.0 90.0
180 77.0 80.5 83.5 87.0 90.0 93.5 93.5 92.5 91.5 91.0 90.5 90.0 90.0 90.0 90.0
160 77.0 80.5 83.5 87.0 90.0 93.5 93.5 92.5 91.5 91.0 90.5 90.0 90.0 90.0 90.0
140 77.0 80.5 83.5 87.0 90.0 93.5 93.5 92.5 91.5 91.0 90.5 90.0 90.0 90.0 90.0
120 77.0 80.5 83.5 87.0 90.0 93.5 93.5 92.5 91.5 91.0 90.5 90.0 90.0 90.0 90.0
100 77.0 80.5 83.5 87.0 90.0 93.5 93.5 92.5 91.5 91.0 90.5 90.0 90.0 90.0 90.0
80 70.0 80.0 80.0 82.0 83.5 85.5 85.0 83.0 82.0 79.0 78.0 77.0 77.0 77.0 77.0
60 63.0 66.0 68.0 70.0 73.0 77.0 78.0 77.0 73.0 70.5 69.5 68.0 67.0 66.0 66.0
40 54.0 56.0 56.0 62.0 63.0 70.0 73.0 73.0 69.0 66.0 64.0 63.0 62.0 61.0 61.0
20 45.0 50.5 50.0 50.5 54.0 61.5 63.5 63.5 62.5 59.0 58.5 56.5 56.0 55.5 55.0
00 43.0 43.0 44.0 47.0 48.0 49.5 51.5 51.0 46.0 44.0 43.0 42.0 42.0 42.0 42.0


AFR Tracking

AFR AFR
2000 3000 4000 5000 6000 7000 8000
A/F Ratio 11.50 11.50 11.50 11.50 11.50 11.50 11.50


AF User Tune Hi

RPM
400 800 1200 1600 2200 2800 3400 4000 4600 5200 5800 6400 7000 7600
Percent 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0


AF UserTune Mid

RPM
400 800 1200 1600 2200 2800 3400 4000 4600 5200 5800 6400 7000 7600
Percent 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0


AF User Tune Lo

RPM
400 800 1200 1600 2200 2800 3400 4000 4600 5200 5800 6400 7000 7600
Percent 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0


Aux Triggered tune


400 800 1200 1600 2200 2800 3400 4000 4600 5200 5800 6400 7000 7600
Percent 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00


Air Temp Correction

degrees
-40.00 13.00 41.00 62.00 82.00 103.00 129.00 173.00 315.00
Pecent 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00


Spark WOT

RPM
2000 2500 3000 3500 4000 4500 5000 5500 6000 6500 7000 7500 8000
Degrees -10.00 -10.00 -10.00 -10.00 -10.00 -10.00 -10.00 -10.00 -10.00 -10.00 -10.00 -10.00 -10.00


Spark Aux

RPM
2000 2500 3000 3500 4000 4500 5000 5500 6000 6500 7000 7500 8000
Degrees -10.00 -10.00 -10.00 -10.00 -10.00 -10.00 -10.00 -10.00 -10.00 -10.00 -10.00 -10.00 -10.00


Custom Voltage MAF

Volts Grams/Sec

0.25 2.58
0.50 3.97
0.75 5.30
1.00 7.42
1.25 10.63
1.50 14.91
1.75 20.00
2.00 25.59
2.25 31.47
2.50 37.67
2.75 44.66
3.00 53.38
3.25 65.55
3.50 83.72
3.75 111.45
4.00 153.47
4.25 215.83
4.50 306.04
4.75 433.21
4.75 433.21
4.75 433.21
4.75 433.21
4.75 433.21
4.75 433.21
4.75 433.21
4.75 433.21
4.75 433.21
4.75 433.21
4.75 433.21
4.75 433.21
4.75 433.21
4.75 433.21
4.75 433.21
4.75 433.21
4.75 433.21
4.75 433.21
4.75 433.21
4.75 433.21
4.75 433.21
4.75 433.21


VE Table MAP axis

KPA
(null)
(null) 320
(null) 300
(null) 280
(null) 260
(null) 240
(null) 220
(null) 200
(null) 180
(null) 160
(null) 140
(null) 120
(null) 100
(null) 80
(null) 60
(null) 40
(null) 20
(null) 00


VE RPM Points


1 2 3 4 5 6 7 8 9 10 11 12 13 14 14
(null) 0.00 400.00 800.001200.001600.002200.002800.003400.004000.004600.005200.005800.006400.007000.007600.00

 

[dumbo]

this is the log i belive

ohh and if it helps i got rc 550's, walboro 255(no 12v mod) 57 trim ct-26 running speed density,