Moteur et gestion

FQS : fuel quallity switch

Position 0 is full counter clockwise

The FQS - Fuel Quality Switch
Adjustments for Fuel and Ignition Advance (Retard)

 

Porsche 944

Porsche 951
(944 Turbo)

Porsche 911

Porsche 
944S & 944S2

 

USA  ML1.2
1982-1985.0

ROW  ML1.1
1982-1985.0

USA ML3.1
1985.5-1989

ML3.1

ML3.1

M2.1

Switch Position

Fuel

Retard

Fuel

Retard

Fuel

Retard

Fuel

Retard

Fuel

Retard

Fuel

Retard

0

0%

0%

0%

0%

0%

0%

1

+4%

+3%

+3%

+3%

+3.1%

+3%

2

-4%

-3%

-3%

-3%

+6.3%

-3%

3

+6%

+6%

+6%

+6%

-3.9%

+6%

4

0%

-4.15°

0%

-2.77°

0%

-2.77°

0%

-2.73°

0%

-2.79°

0%

TBA

5

+4%

-4.15°

+3%

-2.77°

+3%

-2.77°

+3%

-2.73°

+3.1%

-2.79°

+3%

TBA

6

-4%

-4.15°

-3%

-2.77°

-3%

-2.77°

-3%

-2.73°

+6.3%

-2.79°

-3%

TBA

7

+6%

-4.15°

+6%

-2.77°

+6%

-2.77°

+6%

-2.73°

-3.9%

-2.79°

+6%

TBA

 

130 Teeth

130 Teeth

130 Teeth

132 Teeth

129 Teeth

60-2 wheel

TBA - To be added                      ROW - Rest of World

Switch position 0 is the stock position [full counter clockwise]

The Porsche 964 & 968 have no FQS

 

 

This is an original BOSCH FQS adjusting tool [discontinued long ago]

 

on the left side is the triangular adjusting tool

 

on the right, the tool to punch through FQS cover

 

BMW M3 (E30), M5 (E28), M6 (E24)

BMW 535i (E28), 635i (E24), 735i (E23)

Switch Position

Fuel Mixture

Ignition Timing

Fuel Mixture

Ignition Timing

0

0%

0%

1

+3.9%

+3.9%

2

+10.2%

-3.9%

3

-3.9%

-6.3%

4

0%

-3.1°

0%

-3.1°

5

+3.9%

-3.1°

+3.9%

-3.1°

6

+10.2%

-3.1°

-3.9%

-3.1°

7

-3.9%

-3.1°

-6.3%

-3.1°

116 Teeth Starter Gear

116 Teeth Starter Gear

 

 

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