ILoveMyPatty Posted June 16, 2009 Share Posted June 16, 2009 Is there any possible way to remove the exhaust sensor so the engine doesn't run crappy? I was thinking of getting pacesetter headers, getting a flowmaster welded on either side, and having it dump right behind the front doors, like what you see on Landcuisers sometimes. I want to do something new with my exhaust, something that not alot (if any) have. And since I don't do much city driving, or rock crawling... I don't think that exhaust fumes in the cab would be anything to worry about really. Anyone care to chime in with their thoughts? Link to comment Share on other sites More sharing options...
Kingman Posted June 16, 2009 Share Posted June 16, 2009 No no, the oxygen sensor controls the mixture of the fuel and air being injected into the engine. Link to comment Share on other sites More sharing options...
ILoveMyPatty Posted June 16, 2009 Author Share Posted June 16, 2009 Son of a. So it's not possible to re-locate the sensor? Link to comment Share on other sites More sharing options...
Kingman Posted June 16, 2009 Share Posted June 16, 2009 Well I'm sure you could relocate the sensor instead of removing it. I have no idea how far up or down the exhaust pipe you can move it and have the sensor still read accurately with flow and all that jazz. It must be before any catalytic converter though. Link to comment Share on other sites More sharing options...
ILoveMyPatty Posted June 16, 2009 Author Share Posted June 16, 2009 I wonder if it would matter if it were only reading off of 3 cylinders instead of 6. In theory it shouldn't... since the reading should be the same, yes? Just 2x the gas... Link to comment Share on other sites More sharing options...
Kingman Posted June 16, 2009 Share Posted June 16, 2009 There's only 1 sensor anyways? Link to comment Share on other sites More sharing options...
ILoveMyPatty Posted June 16, 2009 Author Share Posted June 16, 2009 Yes, but it's after the collector, isn't it? Link to comment Share on other sites More sharing options...
Kingman Posted June 16, 2009 Share Posted June 16, 2009 I see what you mean now. Someone else here has probably tinkered with that before, they would know for sure. I wouldn't think it would make a difference, either. But who knows, it's a Pathfinder. Link to comment Share on other sites More sharing options...
ILoveMyPatty Posted June 16, 2009 Author Share Posted June 16, 2009 Haha very true.. it is a Pathfinder, who knows what could go wrong... the tires might fall off! Link to comment Share on other sites More sharing options...
Kingman Posted June 16, 2009 Share Posted June 16, 2009 Yeah that's always a possibility! Link to comment Share on other sites More sharing options...
nunya Posted June 16, 2009 Share Posted June 16, 2009 I don't see you having a major fume issue. My tailpipe, while not under the drivers door, being out the side on the drivers side, the only time I have any fume issues is at drive-thrus. Normally have to shut down just to hear them anyway. Link to comment Share on other sites More sharing options...
ILoveMyPatty Posted June 16, 2009 Author Share Posted June 16, 2009 I've got a pretty bad leak right under my tranny anyway.. and I rarely smell it.. haha Link to comment Share on other sites More sharing options...
MY1PATH Posted June 16, 2009 Share Posted June 16, 2009 The Nissan Heated pre-cat O2 sensor (the only one in this case) is most accurate the closser to the manifold it is. Furthrer down the pipe the exhaust cools and appears chemically differant which I think leads to rich mixing. I belive moving it up stream of the Y (so it only reads 3 cyl) will also lead to rich mixing. IMO Your best bet is to leave it in the mid Pipe(right next to the Y) or relocte it to the the Y pipe. Replacing it with a new one may help your performance since it may be old & worn out. Also, for a pipe as short as you want it I'd stick to 2" pipe & muffler you may lose all your bottom end torque. Link to comment Share on other sites More sharing options...
Astroc2002 Posted June 17, 2009 Share Posted June 17, 2009 Is there any possible way to remove the exhaust sensor so the engine doesn't run crappy? I was thinking of getting pacesetter headers, getting a flowmaster welded on either side, and having it dump right behind the front doors, like what you see on Landcuisers sometimes. I want to do something new with my exhaust, something that not alot (if any) have. And since I don't do much city driving, or rock crawling... I don't think that exhaust fumes in the cab would be anything to worry about really. Anyone care to chime in with their thoughts? My advice is to go with Doug Thorley Header's instead of Pacesetter. I heard on another forum that Pacesetter's were prone to either cracking under pressure and/or rusting. With Thorley's you get what you pay for. Link to comment Share on other sites More sharing options...
Kingman Posted June 17, 2009 Share Posted June 17, 2009 (edited) And the Pacesetter's cross over pipe is useless, both that it's cross over hole is too small and the entire thing is poorly designed. The right bank (facing the truck) produces the venturi affect, while the left side (facing the truck) and cross over pipe do not. Since that's the point of headers, they are pretty much useless. If you run Pacesetters, it's best to run a true dual exhaust which does away with the cross over pipe and ensures the proper venturi affect actually happens. Edited June 17, 2009 by Kingman Link to comment Share on other sites More sharing options...
ILoveMyPatty Posted June 17, 2009 Author Share Posted June 17, 2009 Thats what I was wanting to do was true dual exhaust, no y-pipe or anything. But how is it possible without messing up the sensor... hmmm... Link to comment Share on other sites More sharing options...
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