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neil brown

Fuel pressure

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As I have a spa digital gauge fitted monitoring fuel pressure

 

have noticed a few times that at 1 bar of boost that fuel pressure only goes to 3.6 bar now and again and when letting off throttle fuel pressure drops to 1.6 bar 

 

the reg is 1:1 type but afr ratio is good at 11.3:1

 

do I have a fuel pump issue or reg issue or could it be the sensor for gauge playing up 

 

 

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Look at pressure through the DIFFERENTIAL fuel pressure PID instead. Should stay close to your set fuelpressure at all times. Like 300kps (if thats what you set it to or run)

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