I recently boosted my stock D15 with a kit I pieced together from various parts.

The result was a Garrett T3/T4 turbo with a stainless steel manifold.
I tapped my oil pan and ran all custom lines that i had made at a industrial supply store(Hyquip-Great!)

My question is I just added a new O2 sensor by cutting up and welding my old headers to the down pipe and its running rich. (says the air/fuel Gauge) so I added a NRG fuel pressure regulator with a autometer gauge. and I turned the pressure down to 40psi-still rich, 35psi-still rich , and eventually i turned it all the way down to 25 psi Still Rich!!!

I heard that I should change my spark plugs, wires, and distrubuter but I really dont know any information would be greatly appreciated.

 

did you change out the injectors? Are you on stock computer? If you are using that narrow band autometer gauge then I would not trust it as it is just for looks.

 

I have stock Injectors, and a stock computer, the Air/Fuel Gauge is a sunpro digital that I got at a hotrod shop in milwaukee.I dont think its wide band though.

 

YOu have to get your car tune, then your car will not run rich. The tuner will adjust the fuel/air to make your car run good.

 

What are you doing to supply more fuel?? FMU, AFC, anything??

That gauge is completley worthless, it means nothing. Take it to someone and let them actually tune it or you will be replacing your motor.

 

I wouldn't trust that gauge AT ALL.

Spend some money and get wideband to make sure.