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Re: How to tell if catalytic converter bad?
Posted: Fri May 27, 2016 9:05 am
by rjkoop
Nanonevol wrote:That's excelllent! It is a great feeling when you can fix something yourself! I went with the test pipe, muffler and Ansa in the rear was already there on my carbed '77 and it's really not loud at all.
Thanks for the info. I currently have cat -> resonator -> ANSA muffler and it's pretty quiet. And I actually don't mind making a little more noise
but don't want it to be annoying or give me a headache.
Re: How to tell if catalytic converter bad?
Posted: Thu Sep 07, 2017 7:01 am
by rjkoop
Bought the test pipe from AR. Going to replace it this week. Will be nice to get rid of the leaky CAT. Some people talk about extra HP but we'll see...
Re: How to tell if catalytic converter bad?
Posted: Thu Sep 07, 2017 7:17 am
by RRoller123
On my 80FI, a little louder, somewhat more low frequency rumble, (gets tiring on a longer drive) and noticeable but small amount of increased power. Mostly notice power improvement on steep hills, pedal doesn't need to go down as far to proceed up. Slightly better acceleration overall.
Re: How to tell if catalytic converter bad?
Posted: Sat Sep 09, 2017 6:44 am
by QuebecFiatSpider
Wow thanks for the link.
The price is good on this one...I guess you are satisfied with the end product?
Re: How to tell if catalytic converter bad?
Posted: Sat Sep 09, 2017 7:45 am
by RRoller123
Mine had developed a hard to isolate rattle that only showed up at certain RPMs. Probably pellets having come loose. Gone when the temporary test pipe went in.
Re: How to tell if catalytic converter bad?
Posted: Sat Sep 09, 2017 9:21 am
by klweimer
That link goes a year or two, but it was a good deal. The magnaflo is a good cat, honeycomb instead of pellets. I have to pass emission every two years, so a test pipe was out of the question. If I lived in an area where I didn't have to test, I'd probably just drop in a test pipe and move on.
Kirk