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Increasing fuel pressure on a 2,2 tq 10v

Increasing fuel pressure on a 2,2 tq 10v

  #1  
Old 03-08-2005, 07:58 PM
1st Gear
Thread Starter
Join Date: Feb 2005
Posts: 7
Default Increasing fuel pressure on a 2,2 tq 10v

Hello!

My car has a modify`ed ECU and a stronger wastegate spring( 0,8 bar). I was wondering what has been done to my ECU?
Does my ECU give me more fuel preassure, or do i need to install a bigger pump and a preassure regulating valve....


I am a newbee here, so please give me some straight up anwers..??
 
  #2  
Old 03-09-2005, 01:13 AM
2nd Gear
Join Date: Mar 2004
Location: Swamplands of NJ
Posts: 761
Default RE: Increasing fuel pressure on a 2,2 tq 10v

The ECU doesn't control the system pressure that is preset, it can be adjusted but it’s a pain to do since it can only be accessed through one of the fuel fittings. The ECU controls the differential pressure regulator which in turn controls the amount of fuel going to the injectors.
 
  #3  
Old 03-09-2005, 02:08 PM
1st Gear
Thread Starter
Join Date: Feb 2005
Posts: 7
Default RE: Increasing fuel pressure on a 2,2 tq 10v

Thanks for replying. But where can i find the fuel pump, in the back of the car, or in the engine compartment?

And are there any horse-power gain adjusting the preassure higher???
 
  #4  
Old 03-09-2005, 02:34 PM
2nd Gear
Join Date: Mar 2004
Location: Swamplands of NJ
Posts: 761
Default RE: Increasing fuel pressure on a 2,2 tq 10v

The pump is inside the fuel tank, on the sedan it is a real PITA to get to. If you increase the system pressure you might need to recalibrate your ECU and/or mixture, don't really know the exact degree of complexity. By increasing the system pressure you might actually rob yourself of fuel volume and shorten the life of the pump. The stock system is capable of delivering a bit more then for what it was intended. If you are afraid of running too lean I suggest you get yourself Air/Fuel ratio meter and carefully wire it to your existing 02 sensor or weld on an additional sensor.
 
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