want to replace Cat

[roy c]

I have the original cat in my 93 burb was wondering if i get an after market
magnaflow or other from summit would it trip codes? was going to go cat back
anyway. thanks roy

 

[SAATR]

No downstream O2 sensor in '93, so you could completely remove the catalyst and not throw a code. Aftermarket stock style or high flow replacement units should work just fine and won't cause any issues. Why are you replacing it, out of curiosity?

 

[roy c]

i figure after 20 years and 185,000 its probably seen better days. I also replaced one in my 87 sub 350 tbi 4x4
a year ago with 180,000 plus and it felt like night and day. freed up a bunch of hp at least it seamed so.

 

[great white]

Magnaflow 3" converter was put into my 89 350 with single 3" exhaust and no trouble codes.

There are none to "throw" in a single O2 setup anyways....

 

[roy c]

ny i would need one,

 

[great white]

ny i would need one,

umm, not catching your drift brother....maybe it should snow again.

 

[roy c]

Well last week i went for an inspection the mechanic had my sub on a lift pulling the tires off rear drums
looking for cylinder leaks i say why don't you look threw the peep holes well just have to make sure
truck was on the lift close to 1/2 hour i don't think he would have let me go with out a cat in place

 

[twomanymontes]

Being a NYS Vehicle inspector, its hard to get away with anything. The state has us by the balls. I'm not to sure of anyone who is willing to pay a fine of $2500. to let vehicle pass without a cat.

 

[great white]

Well last week i went for an inspection the mechanic had my sub on a lift pulling the tires off rear drums
looking for cylinder leaks i say why don't you look threw the peep holes well just have to make sure
truck was on the lift close to 1/2 hour i don't think he would have let me go with out a cat in place

Ah gotcha.

I wasn't saying to remove the catalytic converter, I was saying I had a magna flow catalytic converter on mine and no codes were set.

Given the option, I always retain the cat.....

 

[Jorge6.5]

I'm in ny state and live in a small area. I know the mechanic and my truck never gets lifted. My truck is also a '90 and he says no cat is needed, good cause it's not there lol