Catalytic converters were introduced in the 1975 model year cars in the US.

 

Why bother? Seriously.

It's like draining engine oil into your yard. It's dumb.

 

why bother with what?

 

Actually J's does have a piece, only available in Ti. It sheds another 6.25lbs of weight as well. Our cars have 2 cats as it is, if you remove the secondary cat, you are still left with the cat right off the cast in manifold. So you are not catless completely and still emitting cleaner exhaust to satisfy THOSE people, yet they will never be satisified I guess. They seem like the types that just believe all that is presented to them if presented by the government.

 

I gotta pick my battles. PNP HID lights have a direct and observable effect on others. I have not been drawn in to the whole 'save the environment' fad yet. I have not seen enough data to convince me there is a serious threat to mankinds well being. We have no polution problems and I live in a city with both a coal and natural gas power plant. If you pack an area with 10 million people and hundreds of miles of pavement of course the air is going to be crap. Move out of the city and suddenly you'll breathe better. Population is the problem, not pollution. Climate change is a fact of our environment. Even if hypothetically man DOES cause climate change.. so what? The global temperature has shifted over 40 degrees in the past and yet life still goes on... If you cause one organism to go extinct another evolves to fill in the new niche. Sudden unexpected climate change is a fact of this world's history, just ask the dinosaurs. If it was not for the sudden climate change that caused their extinction we would not be around.

 

Insane rant again? Soichiro Honda was one of "THOSE people" as you put it, if you happen to know the history of Honda.

Seriously though, if you drive in traffic, catalytic converters are a common courtesy and keep people behind you from smelling nauseous fumes. Of course if your are the type to smoke or fart in a crowded place, then you don't mind negatively impacting others around you.

 

I wonder why I was helping my former brother in law remove one from his 73 F-100 and I also had to do the same to my 73 Rabbit. They were in use on all cars in the U.S. in 1975.

 

Insane rant? You take what I said as a rant? , well you saying it is just dumb and comparing it to pouring used oil in your yard is actually quite dumb. Or should I call it a rant as well, since you too were expressing your opinion.

I actually do know the history of Mr. Honda, it's why one of my sons is named Soichiro. Also I guess you missed the part that the Fit comes with 2 cats and cars without cats are still cleaner today then they were just 2 decades ago.

 

Time warp perhaps. The VW Rabbit was introduced to the US market in the 1975 model year. My 1974 Ford F-100 (USDM 302 engine) and 1974 Ford Torino (USDM 302 engine) had no catalytic converters.

 

thats also 650 bucks. way outta my league

and where are the two cats? the one that backs up to the manifold and then one right after that? or is it further down on the bpipe or whatever the stock piping is called?

 

Just jokin' with you man. I think removing one is a good compromise

 

There's no such thing as acid rain, it's called acid disposition.

 

There is the one bolted up to the cast in manifold, a small one, but it is still one and then there is a more conventional one on the down pipe (the part I showed in the pic), before the mid(b)-pipe.

 

i found this pic. nice diagram. i guess it would be easier to take off the one closest to the midpipe. are there any dangers (aside from pollution) or performance issues i should worry about after taking off the cat?

 

also how important is the o2 sensor. and will it be effected? if i had a custom fab pipe put on in place of cat would i need them to put a place to put the 02 sensor on? im not to familiar with how it works..

 

You need an o2 sensor bypass or something like that. Someone will know what it's called... I know what it's called, I just can't think of it so for now I'll look like a dummy, lol.

 

its just a universal bung that lets you screw in the O2 sensor. The muffler shop should have some they can weld into the pipe they fab up for you, check ahead of time. Don't forget to ask for an extra bung if you want to add a wideband O2 sensor for a gauge. Also, there's a trick with a spark plug nonfouler that lets you trick the ecu into thinking the cat is still there and not throwing a catalyst efficency code.

 

used O2SIM on my 6th gen accord before

 

Actually look at the placement of the 02 sensor, it reads the exhaust before it even hits the secondary cat, replacing with a straight pipe shouldn't affect the readings the ECU sees with this sensor. If the primary cat was removed, definitely something should be used to trick the ECU into thinking the cat is still in place.

 

^true... so the ecu wouldn't notice a thing?