E36 328 Compact with M52 engine | Fuel Pump Upgrade

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  1. E36 328 Compact with M52 engine | Fuel Pump Upgrade 
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    Is there any point upgrading the fuel pump?
    My mate has a N/A R32 skyline 2.5l and got a walbro fuel pump put in and said it has made a difference.
     
     

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    You have the same pump as used in a 3.0 M3, so it is capable from the factory of running at about 300bhp's worth of fuel, and that's with a BMW safety margin.
     
     

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    Momanatorz (12-05-2011)

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    Quote Originally Posted by TheEnd View Post
    You have the same pump as used in a 3.0 M3, so it is capable from the factory of running at about 300bhp's worth of fuel, and that's with a BMW safety margin.
    Haha thanks again TheEnd
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    Hi, i thought m3's had 5bar fuel pump and non mpower 3bar fuel pump? Can somebody help?
     
     

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    The M3 3.2 has the higher pressure system, the 3.0 is the same as the rest of the E36s.
     
     

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    Lucas84 (07-04-2013)

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    Quote Originally Posted by TheEnd View Post
    The M3 3.2 has the higher pressure system, the 3.0 is the same as the rest of the E36s.
    Quick question Enda,
    If i have a turbocharged 1.8 with a stock fuel pump. What do you think of me upgrading to Walbro 255 pump ? or should i get an M3 pump ?
    Please find me at www. b m w f o r u m s .info (as @Wanda) - I do not check this forum anymore!
     
     

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    Your stock pump should be able to handle up to 300bhp.
    I'm not sure if the M3 3.2 version would make any huge differences, its main difference was being able to give fuel at 5 bar.
    A 255 certainly won't make things worse though, Lee's DASC 318iS uses a Walbro which might be a little overkill but it's better to have the extra headroom than get some sort of lean event at high revs.
     
     

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    Quote Originally Posted by TheEnd View Post
    Your stock pump should be able to handle up to 300bhp.
    I'm not sure if the M3 3.2 version would make any huge differences, its main difference was being able to give fuel at 5 bar.
    A 255 certainly won't make things worse though, Lee's DASC 318iS uses a Walbro which might be a little overkill but it's better to have the extra headroom than get some sort of lean event at high revs.
    Hmmm very good info Enda, thank you , I did think walbro's an overkill, but like you said, the extra headroom could be beneficial
    Please find me at www. b m w f o r u m s .info (as @Wanda) - I do not check this forum anymore!
     
     

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    I got spare m3 pump if u need.
     
     

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    Another possible trick is twin fuel pumps, providing your tank is the same as the rest of the E36s, you'll have one pump/level sender and one just level sender.
    You should be able to swap that to a pump/sender and have two pumps available. I've heard of it being used to combat fuel starvation on track/race cars that run minimum fuel levels and it avoids having to get a swirl pot (which is essentially a smaller back up reservoir which will act as a buffer)
     
     

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