1965gp

Previous owner put a magnaflow exhaust system on the 87 Formula 350 I bought. I had plans of gutting the cat but it has a new magnaflow cat on it. Is it worth it to gut a high flow cat? The car is already plenty loud.

thanks in advance for the replies.

TTOP350

iTrader: (8)

Probably not a big difference in power if the car is stock or even mildly modified.

ULTM8Z

The raw exhaust smell will get old really fast...

I have a 1971 Camaro that I put cats on back in the mid-90's because I got sick of it (and I was only in my early 20's). Ended up getting Walker high-flo's. Didn't notice any loss in power.

That was with a 350. But even now, with my 383... I'm not sure if the cats are costing me any power, but it's a worthwhile trade. But suffice it to say, it doesn't seem like the engine is suffering from lack of power...lol

72buickgs

Federal law still applies against cat converter removal. law but may depend on the state.
here in Canada, if your vehicle came from the factory with a cat, and if u get stopped by the Ministry of Transport , it will cost a whole load of $$$ &/or U can lose your vehicle. Leave the cat on.

1983LU5TA

Considering the technology behind the design of cats produced today, absolutely nothing is to be gained by gutting it, hacking it off, eliminating it, etc. I put a 3” Magnaflow cat on my 84 15th Anniversary that ran 12.teens and the car didn’t lose so much as a tenth. And as mentioned above, the smell gets old really quick. I expect to smell exhaust fumes coming from my 67 Chevelle, not my thirdgens.

1965gp

I decided just to leave the cat, I have a few exhaust leaks to fix but other than that it sounds and runs good. I have a few obnoxious loud, rich smelling cars….. it’s nice to have some that are a little more refined.

thatsupnow

LoL good luck proving that one! There's plenty of shops here in BC that will just cut the old **** out. That being said they'll only cut them out if they are already toast

EDGE

MTO in Ontario go underneath and point a thermometer at the CAT if they suspect something. I'm not kidding.

72buickgs

Several guys here in Windsor, removed the cats off there cars, got stopped by MTO and received a ticket for big fines.

thatsupnow

Well that's a good thing nothing East of Alberta interests me. I usually just go south. I worked in Ontario for 1 month and couldn't wrap my head around how any of y'all can call that place home

EDGE

Believe me. Nothing east of Alberta interests me either. I'm hoping Alberta splits so there's a sane place to escape too

thatsupnow

Hahaha yea man absolutely! It sure didn't take long for this country to go to ****

EDGE

It's absolutely shocking. It's amazing what an Idiot can accomplish in a few short years