benefits to running a catalytic converter as opposed to just a straight pipe?

[deevergote]

Lol ok you guys clearly know more than me ,, not ,, by what i read he wants to straight pipe from the header down ,, and i know his cat is not close to the exhaust manifold which will make him get rid of the O2 ,, i want to see a cb7 where the cat is not preety much around the center console

What does the cat have to do with the o2 sensor? You clearly know more than all of us, so please... educate us. While you're at it, please explain backpressure, and why it is needed. Please cite your sources... and "your ass" does not count as a valid source of information (though that seems to be where you're pulling most of what you say from.)

Also, the CB7 has 2 locations for the o2 sensor. Your F22A1 has the sensor high on the manifold. The F22A4 and F22A6 have it lower, closer to the cat.

[10thAnnivCB7]

I have an F22A1 on my 10th anniversary ,, the back pressure is needed ,, if u check is it will be 0 psi if the cat is good but there is still a bit of backpressure ,, it will run lean becuase it will have more air being drawn into the combustion chamber than it did before with the backpressure ,, look up what back pressure actually is man before u start talking with no facts

[cloudasc]

it will run lean becuase it will have more air being drawn into the combustion chamber than it did before with the backpressure ,, look up what back pressure actually is man before u start talking with no facts

Um... it won't run lean at all because thats what the o2 sensor is for.

[deevergote]

Your sources?

Yes, I know you have an F22A1 in your 10th Anniversary... that's why I mentioned "your F22A1". I know these cars. I know what engines come in them.

What you are describing about fresh air being drawn through is called scavenging... and it does not occur simply by removing a catalytic converter. Expensive race headers are designed to do this to ensure proper filling of the combustion chamber. Under normal circumstances, the exhaust flow does not have a significant influence on the filling of the combustion chamber.

Backpressure is a restriction. Excessive backpressure will cause reversion, which is the opposite of what you're suggesting.

Even if the laughably fictitious scenario you suggest were to happen, removing the o2 sensor wouldn't help at all. Instead of sending a signal to the ECU to alter the amount of fuel sent to the injectors, the ECU would run with no sensor feedback whatsoever. While this CAN be done with a chipped ECU (or more advanced EMS), it's an idiotic practice for anything but a dedicated drag race car that is tuned on a dyno prior to competition to compensate for atmospheric conditions.

Again, I request that you cite your sources... because you are providing false information, and insulting others (that do indeed know a good deal more than you) because you fail to recognize your own ignorance.

[deevergote]

Um... it won't run lean at all because thats what the o2 sensor is for.

He's saying that the o2 sensor will see all the unburned oxygen that's drawn through the exhaust valves (because stock manifolds and cheap headers are well known for their scavenging effects!) The result would be the o2 sensor saying there's too much oxygen in the exhaust. His reasoning is flawed, but I follow what he's saying.

[wed3k]

i don't know whether i should burst into tears or laughter.

[10thAnnivCB7]

Keep googling deev ,, its sad how much u care about what i say ,, what u have been saying makes no sense ,, done

[deevergote]

I've done my research. I know what I'm talking about. I've asked you twice now to provide sources for your information, and all you have to offer are insults.

I don't much care if you live your life in ignorance, but please don't spread false information to my members. Those that are just learning won't know the difference.

[wed3k]

dude...if there was more back pressure like a clogged cat, you wouldn't get 0 psi and the car would run like shit.

you actually want something close to zero or even a positive pressure to help scavenge the air during overlap. thats how engines make more power.

and there is no 2nd o2 behind the cat. there's no fucking point. the only reason why there would be a 2nd bung would be for a wideband and even still, you can use wideband sensor signals and have it fed to your computer in narrow band format. (and it wouldnt be behind the cat)

you can't win this argument.

[BurtonRiderT6]

Lol ok you guys clearly know more than me ,, not ,, by what i read he wants to straight pipe from the header down ,, and i know his cat is not close to the exhaust manifold which will make him get rid of the O2 ,, i want to see a cb7 where the cat is not preety much around the center console

You're reading comprehension is terrible. He said nothing about running a straight pipe from the header back. You pull the cat and replace it with a straight pipe (also refered to as a test pipe). Arguing with the guy that runs the site who has obviously been working on cars (these ones especially) longer than you have is dumb and you are making yourself look bad.

Try stuffing a snorkel with steel wool and jumping into a tank of sharks, let me know how that back pressure works out for you.

http://auto.howstuffworks.com/muffler5.htm

http://www.thumpertalk.com/topic/571...sure-the-myth/

http://en.wikipedia.org/wiki/Back_pressure

I've googled, how bout you?

[10thAnnivCB7]

I never said there was an o2 after the cat ,, learn how to read ,, how about ALL DATA and SHOP KEY for sources man ,, and if he has not cat whats gonna break down the NOX ? I guess u will with your honey comb shaped mouth ,, abd if he wants to work on his car in a closed area ir somethin where there is no ventilation whos gonna get rid of that NOX ,, Im entitled to put my 2 cents trying to help the OP but i guess you are too busy at looking at what other people say instead of caring about the OP ,, but ok

[10thAnnivCB7]

Wikipedia really ??? Lol anybody can write that shit man ,, whatever ,, drop it

[BurtonRiderT6]

Wikipedia really ??? Lol anybody can write that shit man ,, whatever ,, drop it

Actually Wikipedia is a good source as they are required to give references. Something you have yet to produce. Anyone can put what they want on the internet, look at what you're doing.

Your car knowledge seems to be in par with your grammar and punctuation. Keep watching fast and furious, you'll learn tons there.

[10thAnnivCB7]

Haha ,, ok bro ,, A lot of people here should mind their own bussiness ,, sarcastic people who treat u different because of what THEY think is just sad ,, seriously try to help people out instead of caring about what other pleople say

[Kamatari+]

This is getting off-topic. 10Th, people are asking for sources of your information so they can double check them selves. What you're saying is contrary to most people who seem to know what they are talking about. Those people want to make sure you're not reading the wrong information and spreading that around.