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Lean/erratic air-fuel reading/high egt's, HELP please
Alright, here is my problem. First of all, I just put in denso 660cc injectors along with rewiring my fuel pump(which I think is a walbro 190) The reason I am not for sure is because I had to replace the fuel pump shortly after I bought the car and I cannot remember which one I bought. Anyhow, I had my ecu rewritten(keydiver mods) and I also have a S-afc2 which isn't hooked up because of these problems. I also just installed a 1st gen throttle body. Basically my car runs alright, but it runs a little hot, and lean. At 10 psi I get a big hesitation, which I did a boost leak test and fixed EVERYTHING, except that my 1st gen BOV is for some reason letting off boost at around 10psi. So I am going to replace that.
My main problem is that the car is running very lean, and sometimes, just random times it starts to run Very rich, and bogs down completely. I plan on getting a Fuel pressure regulator, but does anyone know why my car would run so lean? I know that my fuel pump is wired very nicely. I have checked the o2 sensors to make sure they are running accurately and they are. The MAS is also reading ok. Do you think that my fuel pump needs to be replaced as well? Any thoughts would be great I would love to have my car finally run right. Thanks. P.S. Compression test is fine, vaccum leaks fine.
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