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Old 04-29-2003, 07:57 PM   #1
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i have a 1994 sse whit series 1 in it and magnaflow ex. so i need a cat that will work better with the backend so info on what is good and performace gains involed
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Old 04-30-2003, 12:11 AM   #2
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dump the cat. replace it with a straight pipe, see how that feels.
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Old 04-30-2003, 04:52 PM   #3
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I totally agree!

Whack the cat!
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Old 05-04-2003, 11:23 AM   #4
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I've heard that if you don't have any cat it would decrease the gas mileage, but I'm sure from the HP gains it would be nice. Does anyone know how much a new cat OEM replacement cat would be and then like a high-flow one. I know my cat is getting bad it stinks sometimes just from normal driving, I 've replaced the O2 sensor and every thing, cept the one on the cat would that make a diff.
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Old 05-04-2003, 12:14 PM   #5
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look in jcwhitney or summit for a catco hi flo catallytic converter. you will probably have to get the universal one. I think it'* around 60 bucks. pretty cheap for a cat conv.
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Old 05-10-2003, 11:53 PM   #6
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I got my high flow cat installed at Muffler man for 140 dollarsAmerican so Id go with the High flow other then a OEM cat that was 50 dollars more anyways.
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Old 05-14-2003, 11:15 AM   #7
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just wondering but last summer i had my cat gutted cuz i was running rich it is filled up with crap but anyways after i got the car back i have no low end torgue but i got high end will just putting a straight pipe like buickman401 said help me at all, and how will it sound
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Old 05-14-2003, 02:46 PM   #8
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If you lose too much backpressure, you'll lose torque. I'd suggest sticking with a cat, but hi-flow for sure. Mine gave me a little deeper rumble. Not overwhelming like a muffler can do, but just a hint.....sounds almost like an aftermarket cam if you know the sound.

Straight piping can get you in trouble, too. It'* a federal crime to do it, but not all states inspect. However.....if you DO get caught. OUch.
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Old 05-14-2003, 03:17 PM   #9
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so i should get a new cat back on? what about if i run rich again ill have to buy another one, they aint cheap 150 installed and everything is that a bad price and do they test emissions in michigan?
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Old 05-14-2003, 06:00 PM   #10
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Not sure about emissions in MI, but I got my hi-flow cat installed for 125, including the cat. Running rich again won't be a problem if you change you O2 sensor.
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