Lean after greddy intake install

[jerry_heath2000]

Ok so I installed my greddy intake manifold not really it's a knock off but anyway now my a/f ratio stays at 14.7 all the time even under boost. For some reason I had the same problem when I installed the engine the first time, fixed that by getting a nismo fpr and turning the pressure up to 60 psi. Well the nismo unit doesn't work with the greddy style manifold so I got a sard adapter and a megan racing fpr set it to 60 and no change. Are the plastic spacers that go under the rail bolts to be reused with the greddy manifold or not? Maybe the injectors aren't going in all way. I don't know any help would be much appreciated.

[Blown240sx]

What fuel pump are you running?What boost?60 psi is very high for factory injectors. I run 42 is good enough.

[jerry_heath2000]

walbro fuel pump with stock boost

[VigVoodoo]

Hmmm... are you using a wideband to read the A/F ratio?

[jerry_heath2000]

yes

[IanS]

fuel pressure should be between 42 to 45 PSI, if you are running 60 somthing isnt right.