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Old Dec 17, 2004
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Question Boost gods please help!

I'm doing a custom turbo kit, with that said, i will instal rsx-s injectors and i need to know how much power can the stock fuel pump handle. What is it its max. I mean to what point is the fuel pump sufficient and in good working condition.
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Old Dec 17, 2004
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well, even with the RSX injectors you are still limited to relatively low boost. You need either even larger injectors with an upgraded pump (maybe S2000?), or some sort of rising rate system (return line)
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Old Dec 17, 2004
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there is one member running 440's on stock pump with no return. Others are running Type S injectors or stock injectors on stock pump. But the real question is..........how long with that stock pump last under that stress. The answer...........nobody knows for sure.
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Old Dec 17, 2004
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if ur going this far custom what is a 150 buck pump
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Old Dec 17, 2004
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doesnt msd make a fuel pump?
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Old Dec 17, 2004
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Originally Posted by allmotor
doesnt msd make a fuel pump?

im sure they make a pump, so does walboro
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Old Dec 18, 2004
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yeah they both make pumps that can be fabbed to a 7th gen...

I would upgrade anyway if you're doing custom. You can tune it once, and have a nice reliable setup. You dont NEED to if you are building up the block, low boost levels have been fine with the stock pump
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Old Dec 18, 2004
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Originally Posted by C2i0v0i1C
if ur going this far custom what is a 150 buck pump

150 for a pump + modifiied fuel rail + hoses and fittings + fpr + plus piggy back computer + tunning = about $1,500
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Old Dec 18, 2004
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Originally Posted by civic01vtec
150 for a pump + modifiied fuel rail + hoses and fittings + fpr + plus piggy back computer + tunning = about $1,500

all he asked was about the pump
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Old Dec 18, 2004
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Originally Posted by C2i0v0i1C
all he asked was about the pump

can't upgrade the pump w/o doing the rest
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Old Dec 18, 2004
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Originally Posted by turboengnr
well, even with the RSX injectors you are still limited to relatively low boost. You need either even larger injectors with an upgraded pump (maybe S2000?), or some sort of rising rate system (return line)
Uh...what do you quantify as relatively low boost? I've been tuned to 11 PSI of boost on them with no problems...

Yes - if you plan on going higher RC's are the way to go.....But for a simple direct replacement RSX injectors are the best.
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Old Dec 18, 2004
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stock fuel pump......for daily and reliability------>9psi tops IMO
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Old Dec 19, 2004
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thanks alot guys, alot of help.
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Old Dec 19, 2004
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Originally Posted by opto_isolator
Uh...what do you quantify as relatively low boost? I've been tuned to 11 PSI of boost on them with no problems...

Yes - if you plan on going higher RC's are the way to go.....But for a simple direct replacement RSX injectors are the best.

those injectors with the otherwise stock fuel system wont flow a lot of fuel. I have seen only about 3 psi of boost on the stock injectors before it went dangerously lean. Now if you have some sort of return system, then i would trust them.
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Old Dec 20, 2004
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Originally Posted by turboengnr
those injectors with the otherwise stock fuel system wont flow a lot of fuel. I have seen only about 3 psi of boost on the stock injectors before it went dangerously lean. Now if you have some sort of return system, then i would trust them.
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