i have a problem with my eclipse 97 gs i installed a big 16g turbo with the stock fuel system it woks well at 4-5 psi of boost then i bought a walbo 250LPH and a 550cc injectors the apexi NEO is is way i knew that the car so supposed too be rich but i decided to give it a try and i started the car with out the apexi and gasoline started coming out of the manifold too rich i thought and the car stooped it self the car didn't stated again it was flooded
i want to know what modification do i need to make with the apexi what and with ratios to change ?thanks ALLOT!!!!!!!
is the apexi enough to control the air fuel ratio??

Yes it is, that's why it's called a SAFC- Super Air/Fuel Contoller. :thumbsup:

And with the bigger injectors, yes, you are probably running hella-right right now at idle and unless you are pushing 14-15 psi, probably a little rich higher up too. But if you have a stock motor, you shouldn't push it over like 8 psi ar you will ruin it!

Oh, did you get an aftermarket Fuel pressure regulator? If you didn't your fuel pump can be over-running the stock one. I know on the GST's/GSX's, you can get by with the stocker for the 190, but you need an aftermarket for the 225, and if the GST/GSX's need an aftermarket fpr, I am positive that you will.

You need to correctly follow the directions supplied with the NEO or Download them from the Apexi Website.

the 420a cars are a "returnless" fuel system. It can get away without an aftermarket FPR a little easier than the 4g63 cars, but it's not recommended because of the boost periods

There is some kind of issue with your injectors. since you said you installed 550cc injectors i'm going to guess that you used injectors for the 4g63 engine. The reason I say that is 420a injectors come in standard measures of lb/min not cc.

Check the impedance on your injectors. if they are 2-4ohm you can't use them and need to find high impedance injectors for your car (around 12-13ohm if I remember correctly)

they are low impedance but i installed the resistor box

what is the resulting impedance after the resistor box?

after 30

before23

those are the wrong injectors and the resistor box is making it worse. you need ones that are 12-14ohm