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

[BurtonRiderT6]

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

lol everything you learn is off what other people say, information gets passed around through books and word of mouth. Thats why there's teachers and schools, you listen to what is said and go from there. I gave truthful advice to the OP, while you came in after my post giving false information. The plus side to all this is that other people with factual knowledge stepped in to prove my point. Judging from all your other threads and posts, it would seem you need to do more reading on this site and stop posting to get the easy way out.

This thread needs to be closed.

[GeoffM]

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

What's up with the commas?

[wed3k]

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

why are we concerned about nox now? high nox doesn't necessarily mean running lean, it just means that the emissions control such as egr isn't functioning correctly.

[DjM_coupe]

troll is troll...that being said; OP i have ran a straight pipe for about 5 years now and have had no adverse effects( no stinky smell or raspiness), i guess it just depends on your situation. I have a f22a6 if it matters

[Loghead]

thank you guys for the help i just wanted to know if i gained anything major from running a test pipe rather than a cat and i decided to pick up a high flow cat from magnaflow

[GhostAccord]

There are no power gains to be had via running a test pipe. These so called "high flow" cats, are no more high flow than an OEM cat. The reason they are cheaper is usually because they are universal fit and/or they have a lower cell count inside the Cat.

Also buying a larger diameter high flow cat won't do anything if your exhaust is still 2-2.25" diameter.














Seriously, you uneducated children need to F#@k off with this back pressure BS. Please do some research before you start spewing your crap! this could be a major reason as to why OG's are so sarcastic and seem to belittle YOU in their responses!

[deevergote]

What do you mean "still" 2"-2.25"? Stock is 1.75"


But yes, there are little to no gains to be had from deleting the cat. As I'm sure I mentioned in this thread before, do what my friend did... put a test pipe in place of the cat for track days, and replace the cat when it's over. That's only if you're trying to get every last ounce of power out of your engine (my friend did that, combined with a custom 2.25" exhaust, AEM short ram intake, cheap generic header, and as much interior weight reduction as he could accomplish in 30 minutes... ran a 15.8 with an F22A1.)

[GhostAccord]

My bad...... I always thought they were the same as the CD exhaust. 2" at the header and 2.25" after the cat. Sucks to only have 1.75" exhaust.

[deevergote]

That's what I've always been told on here, anyway... I MAY be wrong. I haven't had a stock exhaust in my car for almost 10 years!

[GhostAccord]

Oh yeah...2.25" + or go home....

[deevergote]

Exactly. 2.25" for a mildly modified F22A. 2.5" for more serious modifications. 3" or more for hardcore builds or turbo.

[HenRoc]

I thought people from Reading..actually read stuff.

Lame joke of the day:

[CB7 Sleeper]

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

1. Damn its hard to understand anything you write, need an English tutor?

2. All CB7s have one, yes (1) O2 sensor, being that they are OBD-1. 90-91's have one in the manifold, 92-93's have them in the downpipe BEFORE the catalytic converter.

3. Back pressure is unnecessary in the CB7. The O2 sensor that is BEFORE the cat corrects the A/F ratio, so why would you need any sort of back pressure?

Obviously, you are NOT entitled to your .02 cents, you aren't entitled to anything when you're spreading false information and blowing smoke out of your own exhaust pipe. You think you know what you're talking about, you don't, and how dare you question the veterans who have been on this site for years giving great information and helping out those in need of the CORRECT information. It's insulting.

Congratulations, you have successfully made yourself into just another asshat noob member whom nobody has any respect for, and now the next time a new member searches for an answer for a similar question to the OP's, they'll have to read through your bullshit babbling, then end up completely confused over the topic, and post a thread of their own where all the veteran members will have to answer the same question AGAIN, and possibly deal with this sort of stupidity again as well. Thanks for keeping the cycle going. ....

[deevergote]

2. All CB7s have one, yes (1) O2 sensor, being that they are OBD-1. 90-91's have one in the manifold, 92-93's have them in the downpipe BEFORE the catalytic converter.

Actually, as I mentioned previously, the o2 sensor location is based on what engine/manifold is in the car, not the year. All F22A1s have the sensor in the same location, regardless of year. The f22A4 and F22A6 have them in different locations.

I appreciate the attempt to pretend to be a moderator, but if you're going to criticize someone for spreading false information, please try not to do the same thing yourself in the same breath!

[Chronuss]

The f22A4 and F22A6 have them in different locations.

My '91 has the O2 sensor on the cat; however, there is a flange on the header for an optional O2 sensor.

Speaking of which...BACK ON TO THE TOPIC AT HAND...

I have a rudimentary question that requires the experience of the some of the members here. My CB has currently started to develop a rasp at low RPM that seems to emanate from directly below me where the cat is (you may insert joke here at my expense). Once the car powers through the low RPM, the rasp goes away. Current setup is a DC ceramic header, Catco cat (about 5-6 years old, fyi.), and a WS2 catback less than year old. When the WS2 was installed, there was no rasp. As a side note, my MPG has dropped by about 20-30 miles per tank.

I just want some experienced fellas to chime in and tell me if my conclusion of a fouled out cat and O2 sensor is my culprit before I throw down some cash on a new Bosal cat and new O2 sensor.