Inline pump wiring

[Boomdeeze]

Ok I have read the threads on how people are wiring up an intake pump along with an inline pump but it seems in every thread, people argue whether to use one or two relays. I have a walbro 255 in-tank and a Aeromotive tsunami in-line. I also bought the STM rewire kit so I will be running the 8-gauge wire.

So do I run two 30 amp relays, both ran off the single positive?

Or do I run one 60 amp relay and have a 60 amp inline fuse?

 

[banishedmunk]

it all depends on you would you rather have both pumps stop work in the case of a failed relay or one pump continue you work when the other failed?

 

[Boosted98gsx]

it all depends on you would you rather have both pumps stop work in the case of a failed relay or one pump continue you work when the other failed?

.

I run both my walbro 255 in tank and bosch 044 external in line off a single bosch 75A relay with a single 75A fuse. I'd rather both pumps cease working, than have one fail and melt my engine during a pull.

Also, TS, upgrade your fuel filter. It's that time.

 

[Boomdeeze]

.

I run both my walbro 255 in tank and bosch 044 external in line off a single bosch 75A relay with a single 75A fuse. I'd rather both pumps cease working, than have one fail and melt my engine during a pull.

Also, TS, upgrade your fuel filter. It's that time.

Ya it would make sense that you would want both pumps to fail rather than one so your not running lean. So use a 75A or a 60A?

 

[Boosted98gsx]

I use a 75A bosch relay

 

[Boomdeeze]

Can I use the harness that came with the STM kit but plug the 75 or 60A fuse into it? And what gauge wire do I need to use to run back to the relay from the inline? Would the same as the stock wire work?

 

[Boosted98gsx]

Can I use the harness that came with the STM kit but plug the 75 or 60A fuse into it? And what gauge wire do I need to use to run back to the relay from the inline? Would the same as the stock wire work?

I would recommend 12ga wire to each pump from the relay, and 10ga from the battery to the relay with an inline fuse between as your 12v. Use the factory fuel pump power wire as your signal. Ground to chassis

 

[Boomdeeze]

OK so I will use the wire you said with a 75A relay and and inline 75A fuse between the relay and battery

Also which filter do you run? E85 will be going in after I use the rest of the 93

 

[Boosted98gsx]

OK so I will use the wire you said with a 75A relay and and inline 75A fuse between the relay and battery

Also which filter do you run? E85 will be going in after I use the rest of the 93

If you run e85, you'll absolutely 100% need to have a SS filter. You CANNOT use paper filters, they will be turned to goop by the ethanol.

I have a TrickFlow 8an in 8an out filter housing. You can get a variety of filters to go inside of them.

Something like this would work well for you.

Trick Flow Specialties TFS-23004 - Trick Flow® TFX? Inline Fuel Filters - Overview - SummitRacing.com

Or the Fuel Lab filters.

http://fuelab.com/fuel-filters/818-series-in-line-fuelab-filters/81810-in-line-fuelab-filters

 

[Boomdeeze]

If you run e85, you'll absolutely 100% need to have a SS filter. You CANNOT use paper filters, they will be turned to goop by the ethanol.

I have a TrickFlow 8an in 8an out filter housing. You can get a variety of filters to go inside of them.

Something like this would work well for you.

Trick Flow Specialties TFS-23004 - Trick Flow® TFX? Inline Fuel Filters - Overview - SummitRacing.com

Or the Fuel Lab filters.

81810 In-Line Fuelab Filters - Fuelab.com

Anyway to hook that filter up to the stock line or should I just man up and get the pump to rail kit? But would like to stick to stock lines under the car.

 

[Boosted98gsx]

Anyway to hook that filter up to the stock line or should I just man up and get the pump to rail kit? But would like to stick to stock lines under the car.

Somewhere there's a flare adaptor to mate 6an to the OEM fuel line.

here it is

http://www.dsmtuners.com/forums/vendor-announcements/380636-6an-fuel-feed-line-upgrade.html

 

[Boomdeeze]

Dam thanks man