Thread: designated relay for fuel pump

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2015-02-14 15:38:36

#11

squirlz

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Originally Posted by rojeda1217

Would you think its necessary On a stock det swap with 370s stock maf n walboro pump?or any boosted application

It is worth doing in my eyes. The wal brother pulls more current than the stock pump. It can't hurt, even on a stock pump.

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2015-02-14 15:39:46

#12

squirlz

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Originally Posted by eggman

Originally Posted by squirlz
85 - factory fuel pump positive signal
86 - ground
87 - fuel pump positive output
30 - 14-12 AWG positive wire to the battery

Thanks that was what I did
Turned out great...heres some pics and details of the install.
I will do this to any/every time from now on.Even on a stock pump,I would bet it makes a difference.

http://www.sr20-forum.com/sentra-se-r/39341-what-did-you-do-your-b13-today-90.html#post1012718

Very nice, it is an easy mod that is also a bit of insurance.

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92 Infiniti G21 - 242 WHP & 182 Ft-LBs (Mustang Dyno) - NA 88mm 12.5:1 VE, N1 cams, Xcessive Intake, Q45 TB, Mazworx Header, 3" Exhaust, Nismotronic ECU on MAP and IAT.
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2015-02-14 16:01:30

#13

eggman

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Originally Posted by squirlz

Originally Posted by eggman
Originally Posted by squirlz
85 - factory fuel pump positive signal
86 - ground
87 - fuel pump positive output
30 - 14-12 AWG positive wire to the battery

Thanks that was what I did
Turned out great...heres some pics and details of the install.
I will do this to any/every time from now on.Even on a stock pump,I would bet it makes a difference.

http://www.sr20-forum.com/sentra-se-r/39341-what-did-you-do-your-b13-today-90.html#post1012718

Very nice, it is an easy mod that is also a bit of insurance.

yes,unless the relay fails...Then I think it cuts fuel entirely...
.I did use a Bosch relay but relays do fail on occasion

Last edited by eggman on 2015-02-14 at 16-02-45.

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2015-02-17 05:13:03

#14

eggman

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well that relay lasted like 150 miles.I thought myself and @jfeli were gonna be walking home.
I had a piece of wire to jump it to get it home but WTF?

It was a used relay...Bosch though. SMH I actually already ordered 2 new ones since my dumb ass used this unknown origin relay....I know better than that

So this begs the question ...is there a way to have a backup relay or some type of failsafe setup so I dont have this happen again...or on the dyno or something worse??

Last edited by eggman on 2015-02-17 at 05-14-33.

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2015-02-18 01:34:42

#15

enohand

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would like to hear what others do....

why not use a OEM nissan Relay? i assume 1 could be ordered, or pulled from the junkyard

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2015-02-18 01:35:42

#16

enohand

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would like to hear what others do....

why not use a OEM nissan Relay? i assume 1 could be ordered, or pulled from the junkyard

- - - Updated - - -

would like to hear what others do....

why not use a OEM nissan Relay? i assume 1 could be ordered, or pulled from the junkyard

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Originally Posted by Your
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2015-02-18 02:31:26

#17

eggman

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Originally Posted by enohand

would like to hear what others do....

why not use a OEM nissan Relay? i assume 1 could be ordered, or pulled from the junkyard

man I have like 20 of the Nissan ones I may try one on the VVL activation.
I THOUGHT the bosch would be more reliable and it has a nice plug for it,but it was a old mystery used one from a pile of parts in my garage...lol

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2015-02-18 02:45:53

#18

D-Unit121

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The OEM blue relay will serve u well.

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2015-02-18 03:03:59

#19

eggman

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Originally Posted by D-Unit121

The OEM blue relay will serve u well.

whats the differences in blue and green? I think I have some brown too...any idea off hand?
I never really looked at them that close

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2015-02-18 07:51:19

#20

cortrim1

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Jay I have never had a step up relay fail. I always use new relays. Don't forget to put a fuse between the relay and the power source.

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