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Old 07-07-2014, 06:19 PM   #1
InDiGlOM3
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upgraded my fuel system, mostly custom

Figured Id share a few pictures of the fuel system I just completed. The fittings off the tank need to be changed to 120 degree fitting (in mail) so that cover will actually go back on all the way.

2 400e pumps in tank
2 seperate -6 feeds
2 -6 filters
radium multipump regulator
-8 line from regulator to radium rail.
-6 return with e85 sensor for either infinity or ethanol gauge.

I used -6 for return because well even -6 is bigger then the nipple on the
return side so anything bigger is pointless

Its set up just like the HPF kit with the second pump only coming on in boost
so most of the time only 1 pump is running.

just need to upgrade injectors and go e85
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Old 07-07-2014, 08:20 PM   #2
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Looks awesome, thanks for sharing keep us updated on how it works
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Old 07-07-2014, 09:54 PM   #3
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upgraded my fuel system, mostly custom

I like the way u skin a cat.... Very nice and innovative ...Glad u proved the design now I'm following Ur lead....
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Old 07-08-2014, 08:49 AM   #4
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Drove around yesterday. No spikes in pressure and fuel psi is stable at all boost levels even when second pump kicks in. So far so good. New fittings for tank come in Wed then I'll be able to button it up.

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Old 07-08-2014, 11:03 AM   #5
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Drove around yesterday. No spikes in pressure and fuel psi is stable at all boost levels even when second pump kicks in. So far so good. New fittings for tank come in Wed then I'll be able to button it up.
Nice system.

Have you considered PWM control of the pumps? (1 channel for each)
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Old 07-08-2014, 11:30 AM   #6
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Drove around yesterday. No spikes in pressure and fuel psi is stable at all boost levels even when second pump kicks in. So far so good. New fittings for tank come in Wed then I'll be able to button it up.

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That's a very good idea but AEM V1 does not have the capability. Now Infinity does...
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Old 07-08-2014, 12:01 PM   #7
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That's a very good idea but AEM V1 does not have the capability. Now Infinity does...
As I'm sure you know, 75% of the current (Power) going into fuel pumps gets turned into heat. With pumps that are cooled by the fuel flow, as the the Bosch/Walbro/AEM ones are, (And also Aeromotive) that means the fuel gets heated during circulation a fair amount. This concerns me enough that I've added a fuel temp sensor in both the surge tank, and at the FPR, as well as running the fuel pump (A1000) off a closed loop PWM control circuit. The larger the dynamic range of the fuel system is, the more of an issue this might be.

Nice changes regardless for the OP. I did the 120 degree fitting as well:

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Old 07-08-2014, 01:19 PM   #8
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Thanks. That's why I didn't want both pumps running all the time. And I believe the main pump is controlled by the factory dme still and does slow down and speed up via voltage depending on throttle or rpm at idle th pump is near silent with the seat removed. When revved I can hear the pump wine up.

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Old 07-08-2014, 01:21 PM   #9
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Definitely had to get rid of the factory nipple and connector. Picture is it compared to a -6 fitting

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Old 07-08-2014, 01:51 PM   #10
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Definitely had to get rid of the factory nipple and connector. Picture is it compared to a -6 fitting

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Jesse ur doing good things and I appreciate ur sharing them with us fanatics.
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Old 07-08-2014, 05:09 PM   #11
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Definitely had to get rid of the factory nipple and connector. Picture is it compared to a -6 fitting

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lol wow I would say that's a bit different!

FWIW I have the walbro 400 with radium sleve... only 1 though, definitely louder that stock when you first turn the key but after that I don't even hear it with the seat on.
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Old 07-08-2014, 06:53 PM   #12
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Yeah with seat on I Cant hear them. But I have straight pipes lol

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Old 07-08-2014, 09:32 PM   #13
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Not to mention a few hundred HP more than most of us
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Old Yesterday, 07:49 PM   #14
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Much better. Will do a full fill to make sure everything is sealed

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Old Yesterday, 07:55 PM   #15
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Much better. Will do a full fill to make sure everything is sealed

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Nice work....
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Old Yesterday, 08:41 PM   #16
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Much better. Will do a full fill to make sure everything is sealed

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sorry for my ignorance but why is that shiny screw in there? also what are those extra wires for? the 2nd pump?
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Old Yesterday, 09:45 PM   #17
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Sealing old nipple hole. Simple as that, threads are sealed with a glue called seal all. Its gas oil alcohol resistant.

And yes that's for second pump

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