how to change your low and mids on maftpro

S

supramk3man

Supramania Contributor
Jun 26, 2005
414
0
16
40
kentucky
what numbers do you have to change to be get the fuel ratio to change for low and mids i'm idling around 11-12 and when i'm just crusing i'm around 9/10.5 so i need to know what menu i need to go in to to lower the fuel mixuter
the car has 255 walbro, 550 injectors , and i'm using the lc-1
i don't need to know what numbers to put in or anything just what numbers to change and under what title they are here are the numbers i have now i would like to know what numbers to change manual on the maft pro i'm not asking you all to figure out what numbers i need to put in unless you have a system near what i have and you might have a idea of the numbers that would work i would just like to know what set of numbers on the this list change the low and mid fuel ratio
those that have any idea of what it should be the car has: 60-1 turbo, cooleze hard pipes, 3 inch turbo elbow and down pipe, .20 bore, 550cc injectors, sperco intercooler, 255 walbro
veh sel -0
#cyl-6
disp-2.9
airfl mode- speed density
map source- gm 3bar
load srce- use map
baro mode- sea level;
f-out- supra mkIII
v out 1- use setpoint
v-out 2- use setpoint
afr srce- innovate (set for what wideband you use)
f-in mode- 20 (for timing monitor if using)
aux1 mode- trig off

setup:
mainscale- -8.0
v-out 1- 2.5
v-out2- 3.6
after start 2.2
lo load pt- 36.4
mid load- 100.1
hi load- 143
f out max- 0
fe smoooth- 30
use ve table #1
spk base- 15.0
tm base- 1.9
tm correct- 1.27
af tr delay- 0.0


afr tracking

Min TPS 2.50
Min RPM 2400
Min MAP 166.4
Lean Lim% 17.5
Rich Lim% 25.0
Gain 5.2
AFR2000R 13.6
AFR3000R 12.5
AFR4000R 11.5
AFR5000R 11.5
AFR6000R 11.5
AFR7000R 11.5
AFR8000R 11.5
Aux % 0.0

Air Temp
-40.00 0.0%
13.00 0.0%
41.00 0.0%
62.00 0.0%
82.00 0.0%
103.00 0.0%
129.00 0.0%
173.00 0.0%
212.00 0.0%

Aux Triggered
All 0.0%

Tuning
RPM High Mid Low
400 0.0 0.0 0.0
800 0.0 0.0 0.0
1200 0.0 0.0 0.0
1600 0.0 0.0 0.0
2200 0.0 0.0 0.0
2800 0.0 0.0 0.0
3400 +3.0 +3.0 0.0
4000 0.0 +5.0 +3.0
4600 0.0 +5.0 +4.0
5200 0.0 +5.0 0.0
5800 0.0 0.0 -3.0
6400 0.0 0.0 -5.0
7000 0.0 0.0 0.0
7600 0.0 0.0 0.0

Tune Response
TPS Enrich 0.40
TPS Delay 0.60
TPS Size 6
TPS MAP Max 104.0
MAP Enrich 0.1
Boost Enrich 0.1
MAP TPS Min 0.800
MAP RPM Min 2560
MAF Limit TPS Threshold 0.00
MAF Limit 0.00
MAF Limit/KRPM 0.00


PT Tracking -
Idle TPS .44
Idle RPM 1088
Idle A/F 13.9
Cruise TPS 1.90
Cruise RPM 2208
Cruise MAP 91.0
Cruise A/F 14.5
Lean Delay 5.0
Gain 5.0
Lean A/F 15.0
 
D

drjonez

Supramania Contributor
Mar 31, 2005
3,061
0
0
19
the motor city
www.4cefed.com
EDIT: i am an idiot.

you need to turn AFR tracking off- both WOT and part throttle.

to tune low and mid throttle, simply add corrections to the low and mid tables...monitoring Vf for changes.

what's your base fuel press?
 
D

drjonez

Supramania Contributor
Mar 31, 2005
3,061
0
0
19
the motor city
www.4cefed.com
using a walbro w/the stock fuel press regulator and stock fuel lines has been known to cause extremely high pressures (too much restriction in the stock system for the flow of the walbro). look into getting an AFPR w/gauge or renting a fuel press test kit....that may be your problem.

to start tuning, you'll want to turn off AFR tracking so you're not fighting it. change the following settings:

PT tracking-
idle TPS: 0
cruise TPS: 0

AFR tracking-
min TPS: 5
 
D

drjonez

Supramania Contributor
Mar 31, 2005
3,061
0
0
19
the motor city
www.4cefed.com
need? maybe. if $$ is a concern, simply hit up your local auto parts store and rent a fuel pressure test kit.

if not, you'll want to remove the stock FPR and return line and replace it. there isn't a direct fit option, though there are several kits out there. i recommend staying away from knock-off china crap....after all, this IS your fuel system. not the best place the skimp.
 
S

supramk3man

Supramania Contributor
Jun 26, 2005
414
0
16
40
kentucky
it isn't the money at all i just don't know anything about afpr or anything about the maftpro all i need to know is what to buy and what to set it at that is all i'm asking for
 
D

drjonez

Supramania Contributor
Mar 31, 2005
3,061
0
0
19
the motor city
www.4cefed.com
modifying a car isn't about just buying parts- it's about understanding what each part does and how they work together. if you don't have an understanding of something you have 2 options:

1. take the time to do the research/reading yourself to gain understanding

2. pay someone who has the understanding to do the work for you
 
S

supramk3man

Supramania Contributor
Jun 26, 2005
414
0
16
40
kentucky
i understand the fuel ratio and what must have and how to get what didn't know was that it had came time that i need to put in an afpr. now i would like to know the type and brand that you would recommend thank you for your time and help
 
D

drjonez

Supramania Contributor
Mar 31, 2005
3,061
0
0
19
the motor city
www.4cefed.com
what sort of AFR numbers are you seeing @ WOT? if it's real rich, i suggest pulling the J tube on the fuel return and drilling it out and seeing if that helps....

i recommend an aeromotive AFPR and then have someone make you up some real SS/lines and fittings. beware that most industrial SS line/fittings have rather small inner diameter....then again, it can't be any worse than what you have.
 
S

supramk3man

Supramania Contributor
Jun 26, 2005
414
0
16
40
kentucky
Aeromotive AFPR kit for 7M-GTE
Aeromotive AFPR kit for 7m-gte. Includes Aeromotive 13109, custom braided stainless feed and return lines, all the needed fittings and adaptors, 0-100 psi liquid filled gauge, and a bracket for the shock tower. Bypasses the j-pipe on the 7m block. The stock regulator just does not cut it when you have a bigger fuel pump and bigger injectors.
 
JimR

JimR

Supramania Contributor
Mar 30, 2005
304
0
0
Canada
Two other things I noticed... your displacement is set to 2.9 litres, is this something you have calculated? Stock is 2.952 litres, I see you're 0.20 overbore (JE pistons?) so that changes things, but it's unlikely to lower your displacement. When running in speed density mode you want the displacement number to be pretty accurate.

Number 2, your AFR Tracking starting RPM is 2400. That's far below the ECU's open loop transition at 3500rpm, which means that it will be constantly fighting your target afr's (trying to bring it back to 14.7) unless you're not running the stock O2 sensor anymore. I suggest 3500rpm for this when you have it enabled.

Cheers,
Jim
 
You must log in or register to reply here.
Top Bottom