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Old Jul 31, 2011, 10:55 PM
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Upgrading RA fuel pump

Needed or is the OEM fine?
Old Jul 31, 2011, 11:03 PM
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Someone correct me if I'm wrong, but pretty sure X fuel pump is same as RA pump.

If that's the case:
https://www.evolutionm.net/forums/ev...fuel-pump.html

Based off that link, you should be fine even with an X turbo swap. Probably could change the injectors though since they're PnP.

Last edited by omegis; Jul 31, 2011 at 11:06 PM.
Old Jul 31, 2011, 11:21 PM
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I didnt know that the RA has the same as the evo X. I have a turboback exhaust, evo x fmic, UR IC piping and UR intake. Im getting a custom tune and that should do it for engine mods for a while. If the stock fuel pump can handle that without going 100% ill be happy
Old Aug 1, 2011, 03:04 AM
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Most upgrades go for Walbro pump and there is also a green relay that is meant to be more reliable than the stock relay
Old Aug 1, 2011, 07:36 AM
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Well if i dont need to upgrade i would rather spend that money somewhere else in my car
Old Aug 1, 2011, 07:50 AM
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if those are your mods dont worry about injectors or pump for now you wont be at 100% on either. HOWEVER........change out that POS stock fuel relay and zip tie/safety wire your fuel pressure regulator hose or you will end up like me!
Old Aug 1, 2011, 08:56 AM
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Originally Posted by bronto11588
if those are your mods dont worry about injectors or pump for now you wont be at 100% on either. HOWEVER........change out that POS stock fuel relay and zip tie/safety wire your fuel pressure regulator hose or you will end up like me!
Been preaching that to a lot of people including those over on 9glancers.com
Old Aug 1, 2011, 03:01 PM
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OEM RA pump is same as Evo 10 pump.

I used the OEM pump with my CBRD BBX lite turbo on 91 octane, no issues.
Old Aug 1, 2011, 03:21 PM
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Originally Posted by bronto11588
if those are your mods dont worry about injectors or pump for now you wont be at 100% on either. HOWEVER........change out that POS stock fuel relay and zip tie/safety wire your fuel pressure regulator hose or you will end up like me!

where can i get those?

So the stock fuel pump and injectors are fine unless i go with a bigger turbo?
Old Aug 1, 2011, 03:35 PM
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Originally Posted by pbassist12
where can i get those?
www.mitsubishiparts.net has the fuel relay. Just do a search for "fuel relay" on that site.

Originally Posted by pbassist12
So the stock fuel pump and injectors are fine unless i go with a bigger turbo?
Yes
Old Aug 1, 2011, 03:51 PM
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okay cool, just get that and i should be fine?
Old Aug 1, 2011, 04:47 PM
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Originally Posted by pbassist12
okay cool, just get that and i should be fine?
If you don't have the blue relay, then yes.
Old Aug 1, 2011, 05:29 PM
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and what about the wire?
Old Aug 1, 2011, 05:32 PM
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He's talking about zip-tieing or using safety wire on the part circled "came off here" in the pic below:



As you may have guessed, his hose came off their causing him to run stupid lean.
Old Aug 2, 2011, 03:50 AM
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what would be even better is an in-tank anti-surge set up. on long left handers with semis (and under half to a quarter of a tank) often get fuel surge issues...


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