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Evo X Performance General discussion for performance topics that are unique to the Evo X. IF THE TOPIC IS COMMON WITH OTHER LANCERS, PLEASE POST IT IN: '08+ Lancer Common.
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Old 08-19-2011, 04:01 AM   #1
m7mad.a
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Fuel pressure regulator?

Is a fuel pressure regulator needed when installing a fuel pump and hard wire kit?
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Old 08-19-2011, 04:09 AM   #2
HR2L
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Your car comes with one stock. It should suffice.
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Old 08-19-2011, 04:16 AM   #3
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^ what he said. you only need aftermarket fpr if you're doing some serious fuel system overhaul
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Old 01-08-2012, 09:57 AM   #4
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What do you classify serious fuel system overhaul?

I would also like to know if an aftermarket fpr is needed if I install a dw300 fuel pump and fic1100cc injectors? On pump and e85? Or is the stock one sufficient?
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Old 01-08-2012, 11:06 AM   #5
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Quote:
Originally Posted by dannyz View Post
What do you classify serious fuel system overhaul?

I would also like to know if an aftermarket fpr is needed if I install a dw300 fuel pump and fic1100cc injectors? On pump and e85? Or is the stock one sufficient?

fuel pump + fuel injectors = aftermarket fpr.
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Old 01-08-2012, 12:54 PM   #6
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Originally Posted by Snakes709 View Post
fuel pump + fuel injectors = aftermarket fpr.
Yeah this is what I heard.. B4..
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Old 01-08-2012, 02:11 PM   #7
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Hmm, I may be wrong but I do not agree with this statement, im running a 255+Dw1000cc injectors on a Black = andi dont havean after market FPR?

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fuel pump + fuel injectors = aftermarket fpr.
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Old 01-08-2012, 02:56 PM   #8
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For just a pump + injectors, you do NOT need an aftermarket fpr.
If you're doing a surge tank or fuel cell with new fuel rail and a huge fuel pump (bosch 044, weldon, etc), then you need one. That's what I meant by serious overhaul.
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Old 01-08-2012, 03:06 PM   #9
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A fuel pressure regulator is a device that keeps the fuel pressure being fed into an engine at the same pressure. This is important because sometime fuel pressure can vary coming from the pump, and this could cause the engine to run rough. As long as you have enough fuel pump and injectors, there is no use for a AFPR.
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Old 01-08-2012, 03:09 PM   #10
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meh, always good to have..lol.
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