How to tell when cats go bad? - 2003-04 Mach 1 Registry Owners Club

AMCSMACH · 04-11-2007, 09:02 PM

My Magnaflow catted X is reaching 3 yrs old and I'm thinking my cats may be clogged. I've read several posts on another forum about the "skunk" smell after heavy acceleration which is generally caused by clogged cats. Does anyone have any thoughts on this subject? If the problem is with the cats what would be the best route to go, get new cats or simply do a cat delete? I do not have to pass any state inspections where I live and I'm always wanting more power.
Andy

Fastbandit99 · 04-11-2007, 09:18 PM

I had a cat go bad one day when I was giving it a bath, it bit me right to the bone. I lifted my arm and the cat was hanging by it's teeth, it almost drowned, but because I knew my kids would hate me it still lives today.....

Sorry

AMCSMACH · 04-11-2007, 09:22 PM

Quote:

Originally Posted by Mach1Marauder

down on power.....rattling.....HOTer

Down on power?, No. Rattling?, No. Hotter than normal? Yes. It seems that the mufflers don't get near as hot as they used to but the cats get hotter. Is there any other tests I can do? If I do decide to delete the cats do you feel that it will increase or decrease my power level? I know it will flow more freely but I've also read that in some cases deleting cats have caused some loss in HP due to the decreased back pressure the engine needs.
Andy

AMCSMACH · 04-11-2007, 09:26 PM

Quote:

Originally Posted by Fastbandit99

I had a cat go bad one day when I was giving it a bath, it bit me right to the bone. I lifted my arm and the cat was hanging by it's teeth, it almost drowned, but because I knew my kids would hate me it still lives today....

Sorry

I can appreciate your humor, a little lame but appreciated!

Charles236 · 04-13-2007, 05:21 PM

Quote:

Originally Posted by Fastbandit99

I had a cat go bad one day when I was giving it a bath, it bit me right to the bone. I lifted my arm and the cat was hanging by it's teeth, it almost drowned, but because I knew my kids would hate me it still lives today.....

Sorry

Better to go with "disposable" pets, like goldfish or hamsters. No bathing them, when they croak you can flush them and get another one before the kids get wise to the critter dying.

MyLittlePony · 04-13-2007, 06:11 PM

Here is an example of what to look for....

ponygt65 · 04-13-2007, 06:53 PM

Quote:

Originally Posted by AMCSMACH

Down on power?, No. Rattling?, No. Hotter than normal? Yes. It seems that the mufflers don't get near as hot as they used to but the cats get hotter. Is there any other tests I can do? If I do decide to delete the cats do you feel that it will increase or decrease my power level? I know it will flow more freely but I've also read that in some cases deleting cats have caused some loss in HP due to the decreased back pressure the engine needs.
Andy

O/R midpipes will generally have higher HP and lower TQ numbers than those of a catted midpipe....depends on what you are looking for..TQ or HP, and what sound you want.

If your cats are going bad after 3 years..I would be shocked. Even the rattling could be a sign of 'cooling' off.

BTW - the skunk smell could be the tune....(A/F ratio). Might want to have that double checked.

AMCSMACH · 04-13-2007, 09:26 PM

Quote:

Originally Posted by ponygt65

O/R midpipes will generally have higher HP and lower TQ numbers than those of a catted midpipe....depends on what you are looking for..TQ or HP, and what sound you want.

If your cats are going bad after 3 years..I would be shocked. Even the rattling could be a sign of 'cooling' off.

BTW - the skunk smell could be the tune....(A/F ratio). Might want to have that double checked.

Thanks for the input, I will look into those issues.
AC

gotmach · 04-14-2007, 09:54 AM

Quote:

Originally Posted by MyLittlePony

Here is an example of what to look for....

thats funny.. i set it as a backround on my desktop

og556 · 04-17-2007, 10:52 AM

I don't know if this would apply to your car but coming from another modular ford community I have noticed a trend in Magnaflow cat's going out after a short period of time (usually 12 months or so with LT's) but I dont know if this would apply to your car since you dont have LT's and I don't know enough about Mach's yet.

4a7191a · 04-18-2007, 08:04 AM

the gas mileage will suffer from a bad cat, you could get it sniff tested, or call magnaflow and see how good that 1,000,000 mile warrenty really is.

J1MJ1M · 04-18-2007, 04:33 PM

^ idk my buddy just had his magnaflow x's cats randomly go on his cobra too...

dantheratman · 04-18-2007, 05:05 PM

this should tell ya when they are bad.....LOL, pics are from one of my best buds kooks cats, but he is runnin a pretty b/a setup...............http://www.modularfords.com/forums/2...yed-81383.html

04-11-2007, 09:02 PM	#1
AMCSMACH Respect All, Fear None! Join Date: Apr 2007 Location: Moultrie, Ga Posts: 55	How to tell when cats go bad? My Magnaflow catted X is reaching 3 yrs old and I'm thinking my cats may be clogged. I've read several posts on another forum about the "skunk" smell after heavy acceleration which is generally caused by clogged cats. Does anyone have any thoughts on this subject? If the problem is with the cats what would be the best route to go, get new cats or simply do a cat delete? I do not have to pass any state inspections where I live and I'm always wanting more power. Andy __________________ 04 AB 5spd Mod List-Steeda Tri-ax, Steeda CAI, Steeda Sport Springs, Steeda G Trac Brace, PHP Spacer, Magnaflow X-Pipe, Magnaflow Catback, Hotchkis CC Plates, DS Loop, Moser 28's, 410's w/welded tubes, MM Full Subs, MT ET Streets, SCT Tuner 12.77 @ 111 Mph 1.89 60 ft

04-11-2007, 09:18 PM	#2
Fastbandit99 Back in Black Join Date: Feb 2006 Location: Lakeland, FL Posts: 1,070	Re: How to tell when cats go bad? I had a cat go bad one day when I was giving it a bath, it bit me right to the bone. I lifted my arm and the cat was hanging by it's teeth, it almost drowned, but because I knew my kids would hate me it still lives today..... Sorry __________________ Banditman 03 Black Mach 1 5 spd, K&N FIPK2, PHP spacer, MRT Catted h pipe, Magnaflow catback.

04-13-2007, 06:11 PM	#6
MyLittlePony OG Mach1Misfit Join Date: Apr 2004 Location: Ofallon, MO Posts: 1,543	Re: How to tell when cats go bad? Here is an example of what to look for....

04-17-2007, 10:52 AM	#10
og556 Registered User Join Date: Apr 2007 Location: Reston, Va Posts: 27	Re: How to tell when cats go bad? I don't know if this would apply to your car but coming from another modular ford community I have noticed a trend in Magnaflow cat's going out after a short period of time (usually 12 months or so with LT's) but I dont know if this would apply to your car since you dont have LT's and I don't know enough about Mach's yet.

04-18-2007, 08:04 AM	#11
4a7191a Registered User Join Date: Jun 2004 Location: beaumont texas Posts: 1,344	Re: How to tell when cats go bad? the gas mileage will suffer from a bad cat, you could get it sniff tested, or call magnaflow and see how good that 1,000,000 mile warrenty really is. __________________ 2004white mach1 2001 svt lightning 2011 Mitsubishi Evo X 1999 F250 7.3L

04-18-2007, 04:33 PM	#12
J1MJ1M machsp33d Join Date: May 2004 Location: Binghamton, N.Y. Posts: 252	Re: How to tell when cats go bad? ^ idk my buddy just had his magnaflow x's cats randomly go on his cobra too... __________________ Kenne Bell 1.7L Intercooled 9 Psi kit / SLP O/R X & MAC Catback / AFS Chrome Deep Dish Mach wheels / Eibach Sportlines / '01 Cobra fron bumper / '04 Cobra side skirts / Cobra tank & dual pumps new mach comp

04-18-2007, 05:05 PM	#13
dantheratman Registered User Join Date: Jan 2006 Location: here,here Posts: 592	Re: How to tell when cats go bad? this should tell ya when they are bad.....LOL, pics are from one of my best buds kooks cats, but he is runnin a pretty b/a setup...............http://www.modularfords.com/forums/2...yed-81383.html

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