ok. so my garage dont wanna inspect me without a visable cat. my question is can i knock out the honeycomb in the cat and still get an accurate wideband reading??

no one?

anyone????

bumpity

 

your wideband bung should be before the cat anyways

 

I wouldnt see why it wouldnt work. As said above imne is above the cat so it dont have an affect on the sensor.

 

not on the stock exhaust. im am just looking to do it that way until i get a 3 inch exhaust. the 2nd o2 is already taken care of with hpt. i would like to use that spot for the wideband. but i need to gut the cut. i am just worried if there will be anything left in there when i knock the honeycomb stuff out.

 

Put the wb sensor before the cat on the stock exhaust.

um....actually thinking about the question....if you knock out the crap in the cat I don't see why it wouldn't read right.

 

i have never gutted a cat. (that was weird) anywho, buddy that inspects my car told me all i have to do is knock out the honeycomb thing.

 

are you referring to the stock cat...the bashing of the honey comb stuff i mean...

 

indeed i am. well and also when i get a 3inch DP im gonna have to do it too.

 

I've seen a few people cut the cat open, remove the 'stuffing' and put a section of pipe through there to make it look like it hasn't been gutted.
Its really simple to get a bung welded before the cat. The PITA part is getting the bolts loose and not breaking them (from the manifold>downpipe).

 

genius. pure genius

its just gotta be a damn visual thing since my buddy gayed out on me.

 

take two bed pans (like they use in the hospital) and fit them around your exhaust fill them with fiberglass and then weld them together. It looks like a cat and with the fiberglass it won't rattle...

 

Just a little suggestion.... have you seen what you can get for your stock cat at the salvage yard? Some places here are paying 200+ for GM cats so I would think twice before bashing out my cat.

Find a hill billy inspection station and slip him 20$. Are you in a visual only or sniff-test county?

 

he's in a visual only...

Most places won't even lift the car up to look for the car if you are exmpt for emissions unless they hear an exhaust leak...

 

we are an obd2/visual. whats weak is my buddy is the one who would be doing the visual. hes worried i might get pulled over and they actually look. lolz. good luck seeing anything on a lowered ss.

 

i m not sure if your aware of this but cats are worth a lot of money the fuller they are the more they are worth...so if you are going to a 3 inch system any way dont bash it... just buy a different 3 inch down tube...
i know they are not cheap...but my friend took his off his saturn and took it to a scrap yard that takes cats and got 150 clams for one that was surely older and more used than yours...

 

i need to have a cat for visual.

 

tell your buddy that you will tell the cop if he sees it that you took the cat off after inspection...

 

H EX-6170: Cobalt SS MaxFlow Cat/Downpipe $461.99

 

i did. hes like well they could see how old the welds are blah blah blah. plus the 3" wont have one.

 

Too bad you are so far away or I would hook you up.

I have been inspecting cars/trucks for 9 years and never got questioned on anything. All you have to say is "it was there when I looked at it"

Personally I would do as suggested above and get the DP you want and make a fake cat, just 2 heat shields welded together. Your stock cat is worth too much to gut it. IMO

 

cash in on your cat...apply money to new system...

 

Can't you just swap out the down pipe for inspection? Better yet just put a high flow 3" cat on. You're not going to hurt the flow or the HP or the sound with a high flow cat...

 

the one from hahn has a smaller cat..problem solved...cats there only smaller and less restictive=more power