Sold Ferrari f355 hyperflow cats

I just removed these 200 cell hyperflow cats from my ferrari 355 when I replaced them with a hjs fabspeed version which resembles the stock. Asking $800 shipped. Image Unavailable, Please Login Image Unavailable, Please Login
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What brand are they?


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I was told they are hyperflow 200 cell cats. You can verify from this pic. Image Unavailable, Please Login

 

Why are you changing them out please?


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What year & trim is your car? And transmission


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My smog shop said california won't pass it even though it passes the sniffer and check engine light test bec they're aftermarket.

I swapped with fabspeed core changes which have the internals changed but the outside looks like stock then coveted them with heat sheields Image Unavailable, Please Login

 

1998 355 gts f1.

 

It doesn’t throw the CEL correct? Thanks sir


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Correct it has no check engine light or slow down light.

 

That's a good price. Hyperflows aren't made anymore. And if you do get a CEL (most don't, some do), just use extenders on the downstream o2 sensors.

 

Yes I just need to clear up the storage and offset the cost of the recent work i put into the car so I priced it for a quick sale, most likely people already have what they need for now

 

lowering price to $700 shipped.

 

Would you ship to the uk?

 

sure, i'll cover up to $50 shipping if you're interested.

 

Those are really good cats I ran them for years

 

I had mine from 2007 to 2021 until they failed

 

Could these cats fit in 2.7 car ? Thanks


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Definitely, you just put a plug in each downstream o2 sensor bung.

 

Yes correct. Most companies now only make compatible 5.2 and 2.7 exhaust and cats where you just cap the extra sensor bung. It's the same hardware the only difference is the 2.7 didn't have a rear bung. I can provide the bolt cap for that if needed.

 

Sold

 

what else has the same sound then if hyper-flows are not produced anymore? I am planning to buy Capristo 3 for the F355 but still searching the right headers and test pipes...

 

i have fabspeed cats which are high quality high flow cats, i believe they sound a bit louder than the hyperflow i had since it has a larger diameter.

 

Consider having your factory cats recored with 200cell inserts. Retains original look as well.

 

There isn't a sound difference between cats. There isn't even that much sound difference between cats and cat delete pipes, surprisingly.

 

I disagree with the latter. Cat bypass definitely is louder and more raw. Not necessarily better, but to each their own.