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I had to upgrade my fuelpump (also have gt-s injectors).
My fuelpump couldn't deliver, especially when boost kicked in, so I was running mad lean (1:19 !!) and in higher rpms it got a bit better (1:15) but still too lean. upgraded fuelpump and all was fine.
 

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Originally posted by Immo
I had to upgrade my fuelpump (also have gt-s injectors).
My fuelpump couldn't deliver, especially when boost kicked in, so I was running mad lean (1:19 !!) and in higher rpms it got a bit better (1:15) but still too lean. upgraded fuelpump and all was fine.
I had the same issue but after the pump and the injectors everything was A ok
 

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Toyota T23 said:
Mabey it is because that i have 8 injecters??
Finn
doubt it, think of it as having 4 huge injectores if the pump cant deliver the fuel the injectors cant add more fuel because their is no more fuel to add, best way to check if you need a bigger pump is to install a fuel pressure gauge if it falls you need a bigger one
 
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