High Flow Primaries - MBWorld.org Forums

Sep 19, 2011 | 10:07 PM

togaclk55

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From: Bay Area, CA

CLK55

High Flow Primaries

Thought I would share this with you guys. Just swapped out my stock primaries with thunderbolt high flow 300 cell metal cats. No CEL. Car is slightly louder at startup and cruising, but definitely louder at WOT from what I can tell. My setup right now is: stock manifolds->high flow cats->no secondaries->muffler.

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Sep 20, 2011 | 01:29 AM

ahmadk

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From: Mesa, AZ

2011 E550 Sedan

congrats...
a sound clip would be nice

Sep 20, 2011 | 01:50 AM

Np55

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Joined: May 2011

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From: Melbourne, Australia

04 W211 E55 AMG

Would the cars ecu need to be adjusted if you swapped out all four for hi flow cats?

Sep 20, 2011 | 06:44 AM

Kevwood

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From: A Canadian in Dubai, United Arab Emirates

'05 C200K SS, '05 Kleemann CLK500K, '08 Hummer H3 & '92 Z34 5sp (track car in Canada)

If you dont throw a code by changing out the primaries then no, the secondaries do not have O2 sensors before and aft. Its good to know 300 cell work with the car in stock trim, I had always wondered it they would throw a code.

Sep 20, 2011 | 07:34 AM

betrezra

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From: Texas

C63 507 AMG DA Car #19

I have heard the labor to do this was expensive and difficult. Did they have any issues with the install of the primaries?

Sep 20, 2011 | 10:46 AM

2MCHCAR

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From: Los Angeles, CA

Supercharged CLK500,ML500,S580

Thanks to adding to our W209 tribal knowledge Togaclk55!

In addition to the questions above, I would like to know if you're going to smog your car? It would be great to know if it passes the California smog sniffer test!

Sep 20, 2011 | 11:22 AM

Supafly

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I drive the racism out of BadDebt. ;)

Quote:

Originally Posted by 2MCHCAR

Thanks to adding to our W209 tribal knowledge Togaclk55!

In addition to the questions above, I would like to know if you're going to smog your car? It would be great to know if it passes the California smog sniffer test!

Up here in BC, our smog test is just and OBD port....lol. If you dont throw a code; you pass.

So technically, I can straight pipe it with Hi-flow primes and pass.

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Sep 20, 2011 | 04:30 PM

togaclk55

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From: Bay Area, CA

CLK55

Quote:

congrats...
a sound clip would be nice

I'll try and get a sound clip, but no guarantees

Quote:

Would the cars ecu need to be adjusted if you swapped out all four for hi flow cats?

Not too sure about this, but I heard the ecu will readjust over time...

Quote:

I have heard the labor to do this was expensive and difficult. Did they have any issues with the install of the primaries?

Nope, the install went pretty smooth, just had him fit the HFC between the o2 sensors. He had to cut some of the ends off the cat to make it fit. Cost me $140.

Quote:

Thanks to adding to our W209 tribal knowledge Togaclk55!
In addition to the questions above, I would like to know if you're going to smog your car? It would be great to know if it passes the California smog sniffer test!

It should pass the sniffer test, there is a guy with a SL600 running this setup and he passed.

Quote:

I used these 300 cell cats w/custom downpipes from my Turbos, relocated O2 sensors & bungs NO check Engine lights & recently passed stringent CA SMOG w/NO tricks on crapy 91 octane. They're surprisingly afforable & durable been on nearly (2) years now...

[URL="https://mbworld.org/forums/clk55-amg-clk63-amg-w208-w209/317532-metal-core-high-flow-cats-now-only-75-ebay-2.html#post4653930"]

Sep 21, 2011 | 03:28 AM

Kevwood

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From: A Canadian in Dubai, United Arab Emirates

'05 C200K SS, '05 Kleemann CLK500K, '08 Hummer H3 & '92 Z34 5sp (track car in Canada)

Quote:

Originally Posted by Supafly

Up here in BC, our smog test is just and OBD port....lol. If you dont throw a code; you pass.

So technically, I can straight pipe it with Hi-flow primes and pass.

I do miss Canada sometimes...

Sep 24, 2011 | 07:35 AM

#10

togaclk55

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From: Bay Area, CA

CLK55

Quote:

Originally Posted by ahmadk

congrats...
a sound clip would be nice

Here ya go, a little startup vid: http://www.youtube.com/watch?v=JaPjBQ0hVxc

Sep 24, 2011 | 11:42 AM

#11

tkhuuyip

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Joined: Aug 2009

Posts: 165

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From: Winnipeg, MB

W209 Clk55 W140 S500

Sounds nice. How much were the cats

Sep 24, 2011 | 03:31 PM

#12

togaclk55

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From: Bay Area, CA

CLK55

Quote:

Originally Posted by tkhuuyip

Sounds nice. How much were the cats

$60/cat
http://cgi.ebay.com/ebaymotors/2-25-...item2eb7f62512

Sep 6, 2012 | 02:54 AM

#13

sleepyheadzzz

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Joined: Sep 2002

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From: Planet Jupiter

2000 Volvo S40, 2006 Hummer H3, 2008 CLK550

The link States the diameter is 2.25 inch......would 2.5 inches work?
Has anybody tried 100 or 200 cell

Sep 10, 2012 | 08:33 AM

#14

bheng

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Joined: Mar 2009

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From: SF

2003 CLK 320

hows the sound under normal cruising? and im assuming it gets progressively louder as you hit it.

willing to consider this just to get a little more umph when i push it =p

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