weird smell after hi flow cat install

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09-01-2010 | 07:19 PM

g19n87r

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Seasoned Member

Joined: Aug 2010

Posts: 287

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From: east hampton new york

Year: 1996

Model: Cherokee

Engine: 4.0

weird smell after hi flow cat install

Is it normal I'm not sure how to describe the smell but I'm guessing its just them breaking in?

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09-01-2010 | 07:21 PM

huntingman2706217

MJ>XJ

Joined: Mar 2009

Posts: 17,836

Likes: 5

From: Griffin, G.A.

Year: 1990

Model: Comanche

Engine: 4.0 I6

its fine.... all exhaust parts do this.... burning off the chemicals..

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09-01-2010 | 08:06 PM

Vindicator9000

Seasoned Member

Joined: Oct 2009

Posts: 305

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From: Highland IL

Year: 94

Model: Cherokee

Yep.

Last time I installed a new exhaust, I could swear it smelled like burning paper until it had been run for a couple of hours.

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09-01-2010 | 08:15 PM

trans_am7935

CF Veteran

Joined: May 2009

Posts: 1,844

Likes: 4

From: Glen Burnie, MD

Year: 1994

Model: Cherokee

Engine: 4.0 H.O. K&N, Borla headers, custom down pipe, magnaflow hi-flo cat, flowmaster to turn down tip

gotta love that new "pushing the smog law limits" smell!!!

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09-01-2010 | 08:20 PM

trplxj

Junior Member

Joined: Aug 2010

Posts: 30

Likes: 0

From: Willard UT

Model: Cherokee

did you install any new pipe with the new cat? The pipe is coated with some "stuff" so that it doesn't rust before it is installed on the vehicle. That is more than likely what you are smelling. I'm not sure but I believe the new cats have it on them as well. It should burn off after a day or two. If you can still smell it after a few days there may be another problem.

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