Return Style Fuel System Q&A - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

GsxrMe · 07-23-2016, 11:34 AM

I've googled the hell out of this but with the GT86, BRZ, FRS I can't find anyone posting a return style fuel system layout map for using aftermarket billet rails.

I'm about to go Flex Fuel and I want to add a return style fuel system before doing so.

I do understand there is a kit but some things I like to do myself.

Noted, I plan on removing all the factory fuel rails leading to the engine as well.

Billet Rails, Layout 1

Billet Rails, Layout 2

FRS Justin · 07-23-2016, 04:46 PM

I believe Radiums website has a return system how to on their website in the blog section. Also consider buying their stuff. I have never been disappointed with Radium its awesome stuff......

Also your diagram is off a little there is a much easier way. PM me

GsxrMe · 07-24-2016, 09:21 AM

I've contracted Radium support. It saddens me to only see a billet return style fuel pump hang for Impreza, Forester, Legacy & Outback but no BRZ/FRS.

BRZFRSSTORE · 07-24-2016, 11:44 AM

You will need to feed the primary rails first gong into secondary rails to regulator and then return to tank.

FRS Justin · 07-24-2016, 12:19 PM

Quote:

Originally Posted by GsxrMe

I've contracted Radium support. It saddens me to only see a billet return style fuel pump hang for Impreza, Forester, Legacy & Outback but no BRZ/FRS.

I just sent them my old fuel tank, they are building a system for the 86. Patience grasshopper.....

FRS Justin · 07-24-2016, 12:32 PM

Quote:

Originally Posted by GsxrMe

I've googled the hell out of this but with the GT86, BRZ, FRS I can't find anyone posting a return style fuel system layout map for using aftermarket billet rails.

I'm about to go Flex Fuel and I want to add a return style fuel system before doing so.

I do understand there is a kit but some things I like to do myself.

Noted, I plan on removing all the factory fuel rails leading to the engine as well.

Billet Rails, Layout 1

Billet Rails, Layout 2

I just reread your post. If I were you I would leave the DI system alone....
Here is why, DI low pressure is 276psi then it will throw a code, target pressure is 581psi and the number one reason is high pressure to trip a stuck code is 2785psi..... Just give the high pressure DI pump a good constant fuel source and your golden... The DI injectors are not changing so the requirement will not change.....

07-23-2016, 11:34 AM	#1
GsxrMe Senior Member Join Date: Jul 2015 Drives: Late 2014 Subaru BRZ Location: Cape Coral, FL Posts: 557 Thanks: 20 Thanked 183 Times in 139 Posts Mentioned: 5 Post(s) Tagged: 2 Thread(s)	Return Style Fuel System Q&A I've googled the hell out of this but with the GT86, BRZ, FRS I can't find anyone posting a return style fuel system layout map for using aftermarket billet rails. I'm about to go Flex Fuel and I want to add a return style fuel system before doing so. I do understand there is a kit but some things I like to do myself. Noted, I plan on removing all the factory fuel rails leading to the engine as well. Billet Rails, Layout 1 Billet Rails, Layout 2 __________________ 2014 Subaru BRZ FBM Turbokit: GTX3076R - ECUTEK HRI FlexFuel tune - FBM 3" Turboback Exhaust - 550cc Injectors - Walbro 485 Fuel Pump - 4bar Map Sensor - FBM Oil Pan - ACT SB7-XTSS - AMSOIL all fluids - Forester XT Oil Cooler - Cusco engine, trans mounts - Whiteline rear differential bushings - Perrin shifter bushing - Firehawk 235/45/17 - AEM Failsafe Last edited by GsxrMe; 07-24-2016 at 09:23 AM.

07-23-2016, 04:46 PM	#2
FRS Justin Senior Member Join Date: May 2014 Drives: 2013 Asphalt FRS Location: San Antonio Posts: 994 Thanks: 693 Thanked 695 Times in 417 Posts Mentioned: 22 Post(s) Tagged: 1 Thread(s)	I believe Radiums website has a return system how to on their website in the blog section. Also consider buying their stuff. I have never been disappointed with Radium its awesome stuff...... Also your diagram is off a little there is a much easier way. PM me __________________ Instagram FT86PROJECT9S Facebook FT86PROJECT9S 710whp

07-24-2016, 09:21 AM	#3
GsxrMe Senior Member Join Date: Jul 2015 Drives: Late 2014 Subaru BRZ Location: Cape Coral, FL Posts: 557 Thanks: 20 Thanked 183 Times in 139 Posts Mentioned: 5 Post(s) Tagged: 2 Thread(s)	I've contracted Radium support. It saddens me to only see a billet return style fuel pump hang for Impreza, Forester, Legacy & Outback but no BRZ/FRS. __________________ 2014 Subaru BRZ FBM Turbokit: GTX3076R - ECUTEK HRI FlexFuel tune - FBM 3" Turboback Exhaust - 550cc Injectors - Walbro 485 Fuel Pump - 4bar Map Sensor - FBM Oil Pan - ACT SB7-XTSS - AMSOIL all fluids - Forester XT Oil Cooler - Cusco engine, trans mounts - Whiteline rear differential bushings - Perrin shifter bushing - Firehawk 235/45/17 - AEM Failsafe

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07-24-2016, 11:44 AM	#4
BRZFRSSTORE Join Date: Feb 2016 Drives: 2013 brz Location: columbus oh Posts: 118 Thanks: 0 Thanked 8 Times in 6 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	You will need to feed the primary rails first gong into secondary rails to regulator and then return to tank.

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