1995 E36 325 fuel pressure regulator

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  1. 1995 E36 325 fuel pressure regulator 
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    hi guys, just wondering.. have any of you done it? and if so, what were the results? i was thinking about getting one and fitting it on my car (e36 325i). what do you think?
     
     

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    I have retitled and moved your thread for you.

    Do you mean you are thinking of changing the standard one for one off another model, or were you thinking of one of those FSE power boost valves?

    To be honest I can't see the point unless you have a good reason to up the fuel pressure.

    Ian
     
     

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    Quote Originally Posted by Ian S View Post
    I have retitled and moved your thread for you.

    Do you mean you are thinking of changing the standard one for one off another model, or were you thinking of one of those FSE power boost valves?

    To be honest I can't see the point unless you have a good reason to up the fuel pressure.

    Ian
    first of all, thanks for moving the thread, i'll pay more attention next time!

    second, yes, i was thinking of replacing my 16yrs old OEM FPR with one of those power boost valves. mods on the car are not that many: K&N air filter, supersprint headers, stainless steel de-cat track pipe all the way to the muffler, and remapped ECU. so not many mods, but still, not a stock car. what you reckon? will it do any good? here's the BHP vs AFR dyno graph:
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    Last edited by mistreku; 24-10-2009 at 21:43.
     
     

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    no other opinions on this?
     
     

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    mistreku (26-10-2009)

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    Quote Originally Posted by Ian S View Post
    a lot! thanks!

    p.s. anything helps me, i have no idea about AFR values.
     
     

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    i did fit a FSE fuel regulator on my redtop corsa, i did notice a slight difference when doing full on drag starts in it, it didnt bog down at all and had plenty of pressure there all the time and it just made it run alot better... but if your cars running ok i wouldnt bother mate, they dont increase the bhp at all, they just give continous pressure and stops flat spots on take off (well thats what i found with mine)

    hope this helps


    1996 E36 328I vert
     
     

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    jamiewright1990 (27-10-2009),mistreku (08-01-2010)

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    of course it helps, thanks. on-topic, i was thinking that besides "smoothing" the torque graph, it might actually give a 2-3 extra bhp, especially on a car that runs a bit lean. and from what i've read in the article above, my car is nowhere near the optimum AFR value, recommended for maximum performance. from what i've read, it should be around 11.5-12. mine is more like around 13-14. so i might actually get something out of this. have no idea yet, but i think i'll fit one to my car and dyno it again. see what happens. but this will be next month i think, due to the present low budget.
     
     

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    i believe 13-14 is best for fuel economy and still has decent pull but best acceleration is better around 12.
    you would definately get better throttle response and more power in your midrange and maybe a bit on top. go for it!
     
     

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    mistreku (08-01-2010)

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    right.. the AFR issue's been on the back burner for a while but now i'm back to it. today i just removed my fuel rail and injectors and i'll start by replacing my green top injectors with pink ones. i also removed my oem fpr and took a look at it. to my surprise, it says 3.5bar on it. i always thought that they're supposed to be 3.0bar, but after a quick look on google, i found out that all 325i's have 3.5bar fpr's. now, what do you reckon? i want to increase the fuel pressure as well, but for now my budget is at 0. should i try and bend the fpr's top end a bit? just to strengthen the spring inside a bit? anyone tried it? cheers!

    gabriel
     
     

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