need help with 02 sensor

[dustinlee24]

my o2 went bad and i hollowed the cat out is there anyway i can delete both cats.my car runs a hole lot better but still isnt right

[danielsatur]

You still need an upstream oxygen sensor, it's the closest to the exhaust manifold.
This sensor gives feed back to the ECU on how well your car is performing.
It's used by the ECU for the air/fuel mix.

[dustinlee24]

so there is no way around it do you think i could make something or is it not constant and fluxes up and down and what would happen if i used the o2 sim on the primary

[danielsatur]

The O2 simulator is used down stream to trick the ECU, it has a Catalytic converter that is working even though it's blown out.

I would stick with a primary O2 for the air/fuel mix.

Did you block the EGR port on this car yet?

[dustinlee24]

no i havent where is it located

[dustinlee24]

i port polished the heads on it last night and it really brought it to life

[danielsatur]

EGR valve is usually connected from the exhaust manifold to the intake.
If not being Green with no cats, you can block EGR port, and go with an
External PCV filter.

look under the hoods of some of these race cars.

[dustinlee24]

there is nothing besides the o2 sensor in the exhaust manifold am i missing something or is it located somewhere else maybe inside the head by the way i have the 2.4l

[danielsatur]

How about cleaning the MAF sensor & connector.

[dustinlee24]

yeah the maf sensor is fine if i bought a piggyback or standalone system do you think that would make the difference i already have the venom 400 on its way im hoping thats going to help

[dustinlee24]

and if i plug off the egr will it have to be programmed

[808drifter]

Originally Posted by dustinlee24

yeah the maf sensor is fine if i bought a piggyback or standalone system do you think that would make the difference i already have the venom 400 on its way im hoping thats going to help

That programmer and others like it do nothing to this car.

[dustinlee24]

what should i do i already spent the money and should go ahead and block off the egr and one other thing do you any ideas for quick upgrades this is my first time dealing with these motors all i have dealt with is 3800 series 2, 3.1 multiports, and 4.3's

[808drifter]

Is it a v6 or a 4banger?
V6 SDS
4cyl Turbo it.

[dustinlee24]

4 cyl, not much for boosting but from the way it seems thats all i can do ,i blocked the egr valve off and it ran good with my foot in the pedal but wouldnt idle at all,so i put it back,about the o2 sensors can i relocate the cats with high flows and the sensors as long as i keep the same setup because i am getting ready to order a 4-2-1 header from dc sports and a new borla exhaust