Fuel rail system upgrade

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.


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Is the TB45 not already EFI?

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Originally Posted by mudski

Is the TB45 not already EFI?

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Yes it is. But I want to improve the efficiency


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Originally Posted by jazor28

Yes it is. But I want to improve the efficiency


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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.