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pumps are different. However the sohc pump should be able to drive the b18c. You definitely don't need a walbro... Also if you use a walbro, you will have a problem adjusting your fuel pressure. And no, an adjustable fuel pressure regulator won't fix it.
 

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stock fuel pump out of a 99-00 civic si handles 400hp easily, read my fuel link in my sig

EDITdrop that in there, might be cheaper than a walbro

EDIT i raed the above posts (my bad for skipping em) stock EK pump can handle 200+hp not sure on its limits
 

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I don't think you should replace your current fuel pump. unless its broken. Stock fuel pump should hold even if you reach 400hp+.



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honda parts
No. only the ek 99-00 civic si's pump better fuel pump can handle UP to 400, anything more will overwork the ump and starve teh engine
 
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