anyone know anything or used this?

http://cgi.ebay.com/ebaymotors...wItem

its cheap but all i wanna know is if it will get rid of my p0420 code for bad cat efficiency

 

I used one once. No problems at all and it was as quiet as a high flow cat

 

cool. i guess i'll try it out, its pretty cheap so if it doesnt work out its not a big deal

 

that is not a cat. that is a resonated test pipe.

 

I thought everyone knew that a high flow cat from ebay isn't really a cat

 

well it says how the gases that go through the exhaust are turned into something else. the text pipe doesnt do that at all.


A catalytic converter consists of an insulated chamber containing pellets of catalyst through which the exhaust gases are passed. Hydrocarbons and carbon monoxide from the exhaust are converted to water vapor and carbon dioxide. It can increase air flow and performance.

that part. well whatever i already ordered it...do you think it will make the CEL go off or should i just pull the bulb

 

you need a MIL eliminator or whatever they are called that tricks the secondary o2

 

Get an o2 simulator if you want to run a straight pipe without a CEL.

 

does that effect gas milage at all? i need the gas milage to be the same

 

yea and i dont really see how the simulator would work

 

get the cel eliminator or go obd1

 

The first o2 sensor is what actually helps to control how much fuel is put in. The 2nd one is just there to make sure that the cat is working, and does not affect gas milage at all. It will give you a CEL thinking that your cat isn't working (which it obviously won't be with a straight pipe), but if you trick it into thinking the exhaust is fine then the CEL will go away without affecting milage.

 

Will this 2.5 "test pipe" fit 1997 coupe EX with b18c5 swap? Need 2.5 test pipe cause of 2.5 header.

thanks

 

doesn't look like a cat. looks like a test pipe. looks like you can bolt the stock cat heat shield around it thats why its a "high flow cat" when it's a test pipe.