1st Generation Specific (1979-1985) 1979-1985 Discussion including performance modifications and technical support sections

Main cat replacement for cheep

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Old 06-13-06, 08:36 PM
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Main cat replacement for cheep

So. . . I bolted on a RB header to my stock exaust. I turn it on and there is a HUGE leak coming out of the main cat in a few places. Stupidly loud now, and not driveable if you ask me.

What should I get to replace the main cat? I dont' have emissions testing here, and have lost my airpump a good bit back. I would really like to not increase the noise levels too much if I can get away with it. (I realize that they will go up from stock with just the header)

Should I be looking at replacement cats that I can weld in, or should I be looking at silencers/resonators?
Old 06-13-06, 08:47 PM
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Replace it with the RM mini silencler or with just a peice of pipe.
Old 06-13-06, 09:16 PM
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I've got a piece of pipe in place of the main cat, and while it's loud, it's not obnoxious by any means. It'd be a good temporary fix, at least.
Old 06-14-06, 09:03 AM
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RM should have been RB.
Old 06-14-06, 09:23 AM
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Yeah, if you can afford it go with the RB presilencer...
Old 06-14-06, 10:06 AM
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Ya, thats the issue, I can't afford it.

I don't want to deal with the noise of a straight pipe without some sort of silencing. Any suggestions on other types of resonators?
Old 06-14-06, 10:23 AM
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I don't know of any other type of resonator/presilencer that will actually stand up to the heat.
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