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Old May 20, 2021 | 09:35 AM
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Question Fuel system upgrade

I'm not sure where to post this, so please feel free to move as needed.

I want to switch my Evo X to flexfuel, so I'm looking at a fuel system upgrade. MAPerformance has a couple of kits that look good, but I don't know if they'll plug together as expected and work with the Ethanol content sensor as expected. Can anyone tell me if this should be mostly plug-and-play, or will I need additional parts? My car has an 18K turbo.

MAP fuel feed line kit WITHOUT filter: https://www.maperformance.com/produc...nt=41315069635
MAP E85 fuel pump kit WITH filter and AMS fuel rail: https://www.maperformance.com/produc...map-evox-500fk
MAP AFPR kit with AEM pressure regulator: https://www.maperformance.com/produc...egulator-evo-x
Zeitronix ECA-2: https://www.maperformance.com/produc...-display-gauge

The plan would be to run TephraXMOD V3 with all of that. Am I on the right track here, or would you do something different?

Thanks!
- Adam
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Old May 20, 2021 | 12:26 PM
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If you use a Aeromotive or ASNU 340LPH drop in filter you don't need the inline filters listed above as those pumps retain the OEM fuel pump housing filter. If you DO want/need an inline filter, it's pretty easy to make your own. I created the below years ago. I don't think Radium sells the hoses anymore but you can find them elsewhere.

Radium PTFE -6AN Hose Assembly 20.0” ST - 90 - $27.95
Straight -6AN / 90* -6AN
http://www.radiumauto.com/PTFE-Hose-...lies-P267.aspx

JEGS Compact Billet In-Line Fuel Filter #15031 - $25.99
-6AN Male/Female
http://www.jegs.com/i/JEGS-Performan...15031/10002/-1

Russell Push-On Fitting #644113 - $18.00 (x2)
-6AN to 5/16
https://www.summitracing.com/parts/rus-644113


Don't need AFPR or upgraded fuel rail. I use OEM FPR and OEM Fuel Rail on my build with two pumps, a surge tank and 600+whp.

There are some companies that make Evo X specific full plug and play Ethanol sensor units:

https://exigent-solutions.com/produc...-flex-fuel-kit
https://www.evodynamics.com/products...-flex-fuel-kit



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Old May 20, 2021 | 02:52 PM
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Originally Posted by razorlab
If you use a Aeromotive or ASNU 340LPH drop in filter you don't need the inline filters listed above as those pumps retain the OEM fuel pump housing filter. If you DO want/need an inline filter, it's pretty easy to make your own. I created the below years ago. I don't think Radium sells the hoses anymore but you can find them elsewhere.



Don't need AFPR or upgraded fuel rail. I use OEM FPR and OEM Fuel Rail on my build with two pumps, a surge tank and 600+whp.

There are some companies that make Evo X specific full plug and play Ethanol sensor units:

https://exigent-solutions.com/produc...-flex-fuel-kit
https://www.evodynamics.com/products...-flex-fuel-kit
Thank you for the info. Even though I don't NEED the AFPR and fuel rail, I have to admit the bling makes me want them anyway, so any issues running those kits? I do like the Exigent ethanol setup, I may end up getting that instead of the ECA-2.

As for the fuel pumps, I'm a little torn. If in the future I do end up going with a 5558 Get 2 on E85, would the 340 pumps still keep up? The Walbro 450 kit seems good to go, so that's why I'm leaning towards it. One and done, no?

The prices of all those kits are in my budget, I kinda like the peace of mind of having a proven solution. But even though those kits work independently, I just don't know if they work together.

Oh, and good news, sounds like English Racing can still tune me remotely after I install everything. That makes me happy.

Last edited by Metal; May 20, 2021 at 03:05 PM.
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Old May 20, 2021 | 04:10 PM
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If your plan is to eventually go 5558 and E85 then just copy my setup.

1700cc
450/525 pump in radium hanger or that + Radium surge tank if you track the car
fuel pump controller (I use a torqbyte but can go cheaper if you don’t need/want all that control)
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Old May 20, 2021 | 05:49 PM
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Originally Posted by razorlab
If your plan is to eventually go 5558 and E85 then just copy my setup.

1700cc
450/525 pump in radium hanger or that + Radium surge tank if you track the car
fuel pump controller (I use a torqbyte but can go cheaper if you don’t need/want all that control)
I think it's pretty unlikely I'll go that route, but I was just curious. I'll call up English in the next day or two and get their take.
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Old May 21, 2021 | 08:15 AM
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Originally Posted by Metal
Thank you for the info. Even though I don't NEED the AFPR and fuel rail, I have to admit the bling makes me want them anyway, so any issues running those kits?
To me, it's about more points of possible failure. Also, make sure you get a fuel pulse damper on the rail if you do go aftermarket fuel rail.
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Old May 21, 2021 | 12:41 PM
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Originally Posted by razorlab
To me, it's about more points of possible failure. Also, make sure you get a fuel pulse damper on the rail if you do go aftermarket fuel rail.
That's a valid point, I'll have to think about that. As for the fuel pulse dampner, I though the fuel pressure regulator equalizes the fuel pressure before it gets to the injectors, so that a dampner isn't needed? Or do I understand that incorrectly?
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Old May 21, 2021 | 06:22 PM
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Not trying to **** on any cornflakes... But those JEGS filters and pretty much all the copy design are absolute garbage filters. They are a nickel sized disc mesh, that's it. There isn't any amount of filter area. Now I know Bryan is the type and has reported that he removes and cleans his, but I wouldn't count on the average joe doing that on a schedule. I actually bought the exact one (JEGS) pictured and after opening it up and seeing what was in it, I ended up mounting it on my LAWN MOWER. That's where it belongs.

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Old May 22, 2021 | 09:54 AM
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Originally Posted by Jaraxle
Not trying to **** on any cornflakes... But those JEGS filters and pretty much all the copy design are absolute garbage filters. They are a nickel sized disc mesh, that's it. There isn't any amount of filter area. Now I know Bryan is the type and has reported that he removes and cleans his, but I wouldn't count on the average joe doing that on a schedule. I actually bought the exact one (JEGS) pictured and after opening it up and seeing what was in it, I ended up mounting it on my LAWN MOWER. That's where it belongs.
Yea you are right, I keep an eye on them. I actually have a nice Radium fuel filter kit that has been sitting in a box for years that I haven't installed yet. Probably will after the move!
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