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johntom
Original Poster
242 posts
72 months
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Hi everyone
Looking at getting a Fse fuel pressure regulator for my 350i/flapper, are they all the same or model specific ?
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rev-erend
17,903 posts
153 months
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There are 2 types.
Rising rate and non rising rate.
I believe the flapper system can use the rising rate and the later hotwire cars need the non rising rate.
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adam quantrill
5,658 posts
111 months
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I have a rising rate FSE on my 350i. It has worked pretty well over the years, you can set the pressure up with an adjuster on the top. Occasionally I check the pressure with a separate gauge. I guess you could get one with the built-in gauge but then how do you know the gauge is accurate?
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rev-erend
17,903 posts
153 months
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They have a blanking plug for the guage - which is sold separately .. they do not advise that it is left permanenty connected though.
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johntom
Original Poster
242 posts
72 months
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Hi
I was watching a new and unused FSE regulator on eBay and have just won it for the grand sum of £3.18!
However now I don't know if it's 'rising rate' or not, unless there's a part number when it arrives which identifies it, or the 2 versions look different ?
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rev-erend
17,903 posts
153 months
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The standard fuel pressure regulator is non rising rate - so either will be fine but either will need the pressure setting that best suites your car.
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johntom
Original Poster
242 posts
72 months
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Thanks
So the 'rising rate' will improve performance whereas the 'non rising rate' is just a replacement for standard?
Is it possible to tell the 2 versions apart?
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maston
330 posts
21 months
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I have been thinking about an fse for my 390 SE especially after reading "the bible" and what Mark Adams has said.
Is it a good performance upgrade ?
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adam quantrill
5,658 posts
111 months
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It is good because it's relatively cheap - gives a good bang for the buck.
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maston
330 posts
21 months
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Adam, is it easy to set up for a novice like me ?
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Jack Valiant
931 posts
105 months
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Ian, as you may remember i have the rising rate fitted to my car and swear by them, its a good mod in my opinion and gives a bit of adjustability to the set up. You need to set it properly with a pressure gauge and emissions monitoring best done on a rolling road session. See piccies attached for info, I fabricated a little bracket to mount it on. Chris  
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johntom
Original Poster
242 posts
72 months
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Hi
My FSE has arrived and it looks like the one you have pictured. The part number near the mounting holes is FSE06B, is this the rising rate model like yours?
Many thanks
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Jack Valiant
931 posts
105 months
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Hi there .... cannot see a number on mine but it sould be fine. Make sure that the connections are all good especially between the reg and the plenum. I would advise getting the pressure meter as i have had mine on for 2 years with no problems. Set the pressure to 36 psi as a start point. Do not over do it as the injectors can start bleeding if the pressure is to high. To do it properly set it up with a fuel / air metering system preferably on a dyno. I do mine once a year to make sure all is well but it rarely needs further adjustment once set up correctly.
Good luck!
Chris
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johntom
Original Poster
242 posts
72 months
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Hi
I have finally got around to fitting the Fse and going for a drive.
Is the 36psi set at tickover or the pump stall pressure ? I set the stall pressure (as per the bible) but at warm tickover it's only 20 psi, is this correct, as the car doesn't seem to perform any better and tends to cut out when restarted?
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rev-erend
17,903 posts
153 months
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I believe the 36psi is set without the engine running...
I also think the figure is 43psi .. but I might be wrong.
Dont forget to attach the vacuum pipe.
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johntom
Original Poster
242 posts
72 months
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Hi
Just out of interest what pressure do you see on the gauge at tickover?
Many thanks
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