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Cat or no cat?

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Old 02-16-2019, 10:05 PM
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Advman89
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Default Cat or no cat?
Need to make a decision...cat or no cat? Factory exhaust is in great shape, but the ceramic bits started falling out, so I'll need to do something (eventually).

Opinions? Parts recos?

Thanks in advance.
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Old 02-16-2019, 11:47 PM
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Lorenzoh
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FVD cat bypass and G-pipe with a wong chip. Wakes the motor up big time and all across the rev range.
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Old 02-17-2019, 12:36 AM
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Bigsix964
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cat!
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Old 02-17-2019, 12:41 AM
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-nick
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Bypass is illegal on the street and adds maybe 2hp compared to a sport cat. Guess how much fun it is sitting in traffic on a motorcycle behind a cat-less car that is making your eyes water. Be a good neighbor please.

Is the ceramic coming from your stock cat, or your exhaust port liners?
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Old 02-17-2019, 01:16 AM
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Lorenzoh
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Originally Posted by -nick
Bypass is illegal on the street and adds maybe 2hp compared to a sport cat. Guess how much fun it is sitting in traffic on a motorcycle behind a cat-less car that is making your eyes water. Be a good neighbor please.

Is the ceramic coming from your stock cat, or your exhaust port liners?
catless with the proper chip to correct AFRs makes much more than +2hp not to mention sounds much better when the primary muffler is left in place. I ride a bike too, and I can’t remember the last time I actually sat behind a car...perhaps you need a more narrow bike.
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Old 02-17-2019, 03:56 AM
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golfnutintib
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cat bypass and chip provides substantial power increase

but the fumes are strong, at start, and standing

not for the faint of heart (nor acceptable with spouses/kids or any one other than off-the-chain car nerds)
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Old 02-17-2019, 04:46 AM
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Spokes
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ROW NZ, were deliverd with a cat bypass. When I put a G pipe on I did get a fume smell. I swapped out the G Pipe and fitted a primary cup pipe. So, stock cat bypass, cup pipe, and a stock secondary, no fume smell, and a nice sound (IMO). And arguable more HP.
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Old 02-17-2019, 10:50 AM
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Advman89
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Thanks everyone.
I think I have my answer for now.
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Old 02-17-2019, 11:38 AM
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cjoenck
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Keep the cat. The power gain - little as it is - in no way justifies the additional pollution.
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Old 02-17-2019, 11:49 AM
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Advman89
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Any thoughts on aftermarket?
Fabspeed has their sport cat...any experience?
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Old 02-18-2019, 05:31 AM
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Both Feet Down
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FVD make a 100 and 200 cel also
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Old 02-18-2019, 10:08 AM
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Originally Posted by Both Feet Down
FVD make a 100 and 200 cel also
they do. But they’re pretty expensive

https://www.fvd.net/us-en/2101119640...ll-110-mm.html
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Old 02-18-2019, 11:46 AM
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mystert
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No cat, primary bypass, Wong chip, done. Sounds great, pulls harder. I dont know what people are talking about in regards to a different smell. As for pollution, hardly anyone is driving their vintage collector vehicle that is often kept in pristine running condition enough to worry about the pollution aspect.
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Old 02-18-2019, 12:15 PM
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Greg Wolfe
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Originally Posted by Lorenzoh

they do. But they’re pretty expensive

https://www.fvd.net/us-en/2101119640...ll-110-mm.html
That's because they are using HJS cats, the best in the business. Little to no measurable hp would be compromised.

Mr. Wolfe
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Old 02-18-2019, 12:30 PM
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tonymission
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I have the FVD sport cat along with Steve Wong chip and don't notice any less power over the cat bypass + chip. If there's a difference, my butt dyno can't pick it up.
Only difference now is my son/wife don't get headaches driving in the car with me.
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