FSE Boost Valves
19 August 2002, 05:52 PM
#2
Scooby Regular
Join Date: Nov 2000
Location: 32 cylinders and many cats
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Your injectors and fuel pump will not be stressed until you fit a new turbo. Running mine at 18 PSI at 6700 RPM gives a 92% duty cycle at 8% CO fuelling with an uprated pump. If I go any further will go for a static increase in fuel pressure. The rising rate ones can be tricky to map around on a MAF based system. If the static rate is not enough, will need to go for 550s.
19 August 2002, 06:00 PM
#3
Subaru Tuning Specialist
Join Date: Jun 2002
Location: 7.74 @179 mph 1/4 mile - road legal
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Agree with JB, even although I have an FSE regulator, I would recommend a 'non-rising' rate adjustable unit. If you have fitted an induction kit of sorts then an additional 0.2-0.3 bar of fuel pressure can help improve pick up at low rpm caused by leanness.
An uprated fuel pump is required before an adjustable regulator will do anything as the standard pump will struggle to maintain the flow on boost.
Andy
An uprated fuel pump is required before an adjustable regulator will do anything as the standard pump will struggle to maintain the flow on boost.
Andy
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