does the cat that important on fuel?

i think i might just get one of hte magnaflow ones from moderperformance.com

 

Good call.

 

hahah

but i dont want to weld!
or get someone to weld it for me...
gah!!!!

oh well

either my mom broke 240,000miles this week
or im going to this weekend for sure

so i'm pretty sure i need a new one...hahahah

 

Bolt it on and have a shop weld it for like $20.

 

do you just cut off the old one?

or does the stock cat bolt off?

cuase i thought it was welded on...

 

Ok sorry to keep asking questions about it, but how long are the cats good for? I put 40 liters in (almost empty) and its at the point where I put fuel in it last time, and im at 360km. The car is idling high (see the High Idle thread for more info) too, so that could be a cause. Usually I average 10c/km on my accord, but in this case I spent 38 on fuel and am at 360km, its slightly less than 10c/km. I havent checked if its glowing red at night, suppose ill do that tomorrow when I work a 10 hour driving shift with it. With 200k it could have been replaced about 75000km ago when the last owner bought it, but he showed no receipts of it being changed. So high flow it will be if I need it. Do universal ones work? 2.25" right?

 

the stock neon exhaust pipe is 2.25

so yea


look for one on www.modernperformance.com

those universal ones might not be as good

 

Damn that ****s pricey there. Ill probably just find one thats universal for 40 bucks and make it work.... That is if its in need of replacing.

I havent looked at my exhaust yet, is there an O2 before AND after the cat? I imagine theres one by exhaust manifold and one after cat (as said in this post) but is there one before aswell?

 

there's only 2. one under the stock airboxon the exhaust mani, and one behind the cat.

 

everyone says that it is illegal in every state but every shop in my town does staight pipes which would be without the muffler... my friend when and got his civic str8 piped at a shop and they took off the cat and everything so if its illegal then why would the shops do it???