LS3 BRZ Fuel Cut - Page 2 - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

Shahano · 10-07-2019, 11:44 AM

I'm running the Hydra ECU.

Sportsguy83 · 10-07-2019, 11:46 AM

Quote:

Originally Posted by DustinS

Bypass the factory pump controller if you aren't using Motec or Emtron (pretty sure those two are the only ones that use the factory pump module?). Pretty sure it's the grey and green wires going into it. Negative and Positive respectively. Just wire that to your ecu or a relay set-up preferably.

Bypass the module as Dustin stated above.

Quote:

Originally Posted by Shahano

I'm running the Hydra ECU.

Shahano · 10-07-2019, 05:16 PM

Will I need to upgrade the fuel pressure regulator after doing that? Or is there no need? If yes, which one should I get?
As is, my car has 58-59psi fuel pressure at idle.

Sportsguy83 · 10-07-2019, 05:16 PM

Quote:

Originally Posted by Shahano

Will I need to upgrade the fuel pressure regulator after doing that? Or is there no need? If yes, which one should I get?

No need

Shahano · 10-08-2019, 07:30 AM

I am glad to say that the fuel cut has finally disappeared

.

Fuel pressure at idle is 63 psi, and at WOT, fuel pressure drops to a max of 55 psi which I believe is normal.

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10-07-2019, 11:44 AM	#15
Shahano Member Join Date: Sep 2019 Drives: LS3 Dry Sump BRZ Location: Beirut, Lebanon Posts: 34 Thanks: 3 Thanked 7 Times in 3 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	I'm running the Hydra ECU.

10-07-2019, 05:16 PM	#17
Shahano Member Join Date: Sep 2019 Drives: LS3 Dry Sump BRZ Location: Beirut, Lebanon Posts: 34 Thanks: 3 Thanked 7 Times in 3 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	Will I need to upgrade the fuel pressure regulator after doing that? Or is there no need? If yes, which one should I get? As is, my car has 58-59psi fuel pressure at idle.

10-08-2019, 07:30 AM	#19
Shahano Member Join Date: Sep 2019 Drives: LS3 Dry Sump BRZ Location: Beirut, Lebanon Posts: 34 Thanks: 3 Thanked 7 Times in 3 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	I am glad to say that the fuel cut has finally disappeared . Fuel pressure at idle is 63 psi, and at WOT, fuel pressure drops to a max of 55 psi which I believe is normal.

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