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E46 M3 (2001-2006) Engine: S54 - Max Hp: 333 hp at 7,900 rpm / 262 lb/ft at 4,900 rpm
Total Produced: 45,000+ - Years Produced: 2001 to 2006.


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Old Sat, May-18-2019, 10:46:43 AM   #1
01M3Fan
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Default Recommendations for aftermarket Catalytic Converters?

Currently running catless and getting tired of gold exhaust tips and the stink - plus moving to a state with a catalytic converter check.

Are there any good aftermarket cats out there that I can weld into my section 1 or should I shop for a euro setup?

Thx


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Old Sun, May-19-2019, 12:51:48 AM   #2
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Default Re: Recommendations for aftermarket Catalytic Converters?

Anyone?


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Old Sun, May-19-2019, 12:59:23 AM   #3
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Default Re: Recommendations for aftermarket Catalytic Converters?

HJS are probably the premiere CAT, but the Vibrant Gesi ones are very good & pretty reasonably priced.
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Old Sun, May-19-2019, 01:15:33 AM   #4
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Default Re: Recommendations for aftermarket Catalytic Converters?

Euro will be your best bang for buck, and will fit like stock because it... is. HJS is probably the best aftermarket option you can buy.
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Old Sun, May-19-2019, 01:44:52 AM   #5
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Default Re: Recommendations for aftermarket Catalytic Converters?

Go euro. Easiest option


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Old Mon, May-20-2019, 12:22:11 AM   #6
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Default Re: Recommendations for aftermarket Catalytic Converters?

Thx! Will hit the FS section and see what I can find


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Old Mon, May-20-2019, 02:57:42 AM   #7
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Default Re: Recommendations for aftermarket Catalytic Converters?

Get in touch with m3e46freak for your euro cats. He gets euro cats and headers often. Then tell him I sent you so I can get a referral bonus =D
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Old Mon, May-20-2019, 03:00:10 AM   #8
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Default Re: Recommendations for aftermarket Catalytic Converters?

If you can find a used fabspeed catted section 1 it's a really nice piece. New they are $$$.

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Old Mon, May-20-2019, 01:36:13 PM   #9
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Default Re: Recommendations for aftermarket Catalytic Converters?

HJS is the best option period.

You can get them pre-made into Section 1 pipes. I got my 200 cells through CPI (special ordered stainless steel weld lines with them).
You can also get the Supersprint catted Section 1. They use 100 cell HJS.

If performance is not that important, euro oem section 1 is good as well.

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Old Mon, May-20-2019, 01:44:48 PM   #10
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Default Re: Recommendations for aftermarket Catalytic Converters?

HJS and GESI are going to be your best bet
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Discussing Recommendations for aftermarket Catalytic Converters? in the E46 M3 (2001-2006) Forum - Engine: S54 - Max Hp: 333 hp at 7,900 rpm / 262 lb/ft at 4,900 rpm
Total Produced: 45,000+ - Years Produced: 2001 to 2006. at BMW M3 Forum.com (E30 M3 | E36 M3 | E46 M3 | E92 M3 | F80/X)