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Evo 9 Stock fuel pump question!

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Old Jul 10, 2011 | 07:25 PM
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Evo 9 Stock fuel pump question!

Up to How much boost will the stock fuel pump support?
Currently I'm Running a peak of 24-25 and 21-22 at 7k. Will the stock support, say from dead stop to 160mph? Without leaning out from lack of fuel pressure?
Would appreciate your comments or suggestions. Thanks!
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Old Jul 10, 2011 | 08:09 PM
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the fuel pump doesn't care how much boost you run. what are your mods and current power level?
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Old Jul 10, 2011 | 08:46 PM
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if you are gonna start modding you car, just buy a walbro and you'll be fine.
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Old Jul 11, 2011 | 03:38 AM
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Keep in mind with the Walbro 255 you will be able to hear it humming. I heard the damn thing humming all the time on my old IX mr.
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Old Jul 11, 2011 | 05:06 AM
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I have the basic bolt-ons intake, full exhaust w/test pipe, fmic, forge UNOs boost controller, upper intake pipe, hks blow off (not recirculating). Ive been following import tuner budget boost up. http://www.importtuner.com/tech/impp...ost/index.html I'm looking for a little extra power, nothing serious. I'm looking into getting it tuned but this would be the last thing, if I even need it?
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Old Jul 11, 2011 | 05:20 AM
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Get the walboro 255 b4 before you get tuned..cheap insurance against a maxed out stock pump.
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Old Jul 11, 2011 | 05:29 AM
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so you are curently running 24-25 psi untuned!?!?! i would grab a walbro and get tuned asap before you blow up
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Old Jul 11, 2011 | 07:46 AM
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Originally Posted by 06evo9
I have the basic bolt-ons intake, full exhaust w/test pipe, fmic, forge UNOs boost controller, upper intake pipe, hks blow off (not recirculating). Ive been following import tuner budget boost up. http://www.importtuner.com/tech/impp...ost/index.html I'm looking for a little extra power, nothing serious. I'm looking into getting it tuned but this would be the last thing, if I even need it?
Stop what you're doing, immediately, turn down the boost, and start reading. I don't mean Import Tuner. Good luck.
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Old Jul 11, 2011 | 07:53 AM
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Originally Posted by FJF
Stop what you're doing, immediately, turn down the boost, and start reading. I don't mean Import Tuner. Good luck.
+1, get a walbro in there ASAP, then go straight to your tuner to get things sorted out.
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Old Jul 11, 2011 | 11:14 AM
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Originally Posted by FJF
Stop what you're doing, immediately, turn down the boost, and start reading. I don't mean Import Tuner. Good luck.


But yeah turn boost down and get a 255
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Old Jul 11, 2011 | 09:50 PM
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Thank you for the info! I lowered the boost to stock. I will be getting a fp and getting it jester tuned first of august! Thanks again guys!
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Old Jul 12, 2011 | 05:36 AM
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So you're getting an FP in two weeks?

Why the fuel pump question?
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Old Jul 12, 2011 | 01:06 PM
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Originally Posted by FERNO
So you're getting an FP in two weeks?

Why the fuel pump question?
Probably because he had no idea on the capabilities of the stock fuel pump .
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Old Jul 12, 2011 | 01:14 PM
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Originally Posted by FJF
Stop what you're doing, immediately, turn down the boost, and start reading. I don't mean Import Tuner. Good luck.
You have the best posts. He is right turn it down and read and ask questions. Get to someone who can tune your car before its on jack stands and your riding an import tuner bicycle.

Last edited by 9evolution; Jul 12, 2011 at 01:17 PM.
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Old Jul 12, 2011 | 01:21 PM
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Originally Posted by J.J4ck0wsk1
Probably because he had no idea on the capabilities of the stock fuel pump .
Yeah, you've got a point...

But if that's a case, how do you get to the knowledge of what FP you are buying without knowing you need a walbro?

In any event, I think the OP could have SEARCHED.
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