Fuel rail system upgrade [Archive] - NissanPatrol.com.au Forum

View Full Version : Fuel rail system upgrade

jazor28

7th March 2025, 12:56 AM

Hi all !

I have a stock TB45E GRX and i want to upgrade the fuel efficiency and power output on it. I’m thinking of going with EFI hardware fuel rail kit. But as experts what can you recommend me ? Any additional changes I need to do ? Also I’m guessing with the fuel rail upgrade I need to add a pressure regulator and a tune up too.

Please correct me if I’m wrong.

Sent from my iPhone using Tapatalk

mudski

7th March 2025, 08:01 AM

Is the TB45 not already EFI?

jazor28

7th March 2025, 07:32 PM

Is the TB45 not already EFI?

Yes it is. But I want to improve the efficiency

Sent from my iPhone using Tapatalk

mudski

13th March 2025, 10:29 AM

Yes it is. But I want to improve the efficiency

Sent from my iPhone using Tapatalk

Ahh ok.
Probably not a lot you can do with them. They have always been gutless and heavy on fuel. Im not sure whats involved with the fuel rail kit but i would think an upgrade of anything would be better than stock. Not sure about a new pressure reg, but a tune i would say yes too.