pre cat gut
#1
pre cat gut
ok sorry if this is already posted somwhere but i cant find how to do it on my 01 3.0...only the 3.5 and stuff so im kinda confused...again if this is posted somwhere please direct me...what i want to know is where is the main cat on mine and what will happen with the 02 sensors and will i need new gaskets? i see the 2 bulges in the headers that look like cats and then one in the middle of the y-pipe and then there are big spots under the car also...help please lol sorry
#4
well the prob im having it that i only have 1 big bulge coming off the front manifold...there isnt one on the back but there looks like there is one IN the y-pipe...so that big bulge AFTER the y pipe is the main cat rite
#6
You have it figured out. The side of the engine that is toward the radiator, the pre-cat is bolted to the exhaust manifold. On the side of the engine towards the firewall, the pre-cat is part of the y-pipe. The main cat is after the y-pipe, roughly under under the front passenger seat.
#7
You have it figured out. The side of the engine that is toward the radiator, the pre-cat is bolted to the exhaust manifold. On the side of the engine towards the firewall, the pre-cat is part of the y-pipe. The main cat is after the y-pipe, roughly under under the front passenger seat.
#8
The cars have 3 cats. A small one for each bank of the engine and a main one further back after the y-pipe.
You don't necessarily need an O2 simulator. I don't have the pre cats and I'm using the O2 sensors that were on the car.
You don't necessarily need an O2 simulator. I don't have the pre cats and I'm using the O2 sensors that were on the car.
#9
oh ok good to hear but wont that make the car loud if u remove the precats. I had a main cat removed on my 2nd gen maxima, made the car a little loud but also was a little quicker than before.
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