MAFT Settings
Mode Switch
|
Switch 1 |
On = 6 Cylinders Off = 8 Cylinders |
|
Switch 2 |
On = Old Style ECM Turbo V6, TPI V8 Off = New Style PCM LT1, LS1, SC3800, Truck |
|
Switch 3 |
On = Output signal limited (blocks DTC code 102 on OBDII Vehicles Off = LT1, LS1 |
|
Switch 4 |
Late Model vehicles: On = 85 mm MAF on cars that were originally equipped with 3.5” |
MAF Base
|
0 |
3.5” LT1/LS1 MAF Sensor Turbo V6 |
No Change |
|
1 |
3.5” LT1/LS1 MAF Sensor Turbo V6 (richer at idle) |
5% Rich |
|
2 |
3.5” LT1/LS1 MAF Sensor Turbo V6 (leaner at idle) |
10% Rich |
|
3 |
3” Caprice/Impala MAF Sensor Turbo V6 |
15% Rich |
|
4 |
3” Caprice/Impala MAF Sensor Turbo V6 (richer at idle) |
20% Rich |
|
5 |
3” Caprice/Impala MAF Sensor Turbo V6 (leaner at idle) |
25% Rich |
|
6 |
85mm Plastic MAF Turbo V6 |
50% Lean |
|
7 |
85mm Plastic MAF Turbo V6 (richer at idle) |
45% Lean |
|
8 |
85mm Plastic MAF Turbo V6 (leaner at idle) |
40% Lean |
|
9 |
Not Used |
35% Lean |
|
A |
Not Used |
30% Lean |
|
B |
Not Used |
25% Lean |
|
C |
Not Used |
20% Lean |
|
D |
Not Used |
15% Lean |
|
E |
Not Used |
10% Lean |
|
F |
Not Used |
5% lean |
MAF WOT
|
0 |
No Change |
|
1 |
2% Rich |
|
2 |
4% Rich |
|
3 |
6% Rich |
|
4 |
8% Rich |
|
5 |
10% Rich |
|
6 |
12% Rich |
|
7 |
14% Rich |
|
8 |
Not Used |
|
9 |
14% Lean |
|
A |
12% Lean |
|
B |
10% Lean |
|
C |
8% Lean |
|
D |
6% Lean |
|
E |
4% Lean |
|
F |
2% Lean |