OEM Downpipes and Secondary Cats Cell Count

blisstik · 02-10-2011, 08:47 PM

Anyone know the cell counts for OEM downpipes and midpipes? Thanks!

cn555ic · 02-10-2011, 08:59 PM

OEM is 300 I believe

blisstik · 02-10-2011, 09:11 PM

Really? High flow catted downpipes are 300 cells or less. I'm thinking they are between 500-600 but no one really knows for sure.

enrita · 02-11-2011, 01:33 AM

think is 600 cells both dps and middle cats.

MKR_DmD · 02-11-2011, 12:31 PM

I would guess no less then 600. High flow cats are expensive and cannot pass smog. With a 10 year warranty on SMOG parts they want the highest cells possible.

02-10-2011, 08:47 PM	#1
blisstik Lieutenant Colonel 159 Rep 1,677 Posts Drives: E92 Join Date: Jul 2009 Location: California iTrader: (14)	OEM Downpipes and Secondary Cats Cell Count Anyone know the cell counts for OEM downpipes and midpipes? Thanks!
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02-10-2011, 08:59 PM	#2
cn555ic 460 Rep 18,331 Posts Drives: 335i Join Date: Jun 2007 Location: US iTrader: (6)	OEM is 300 I believe
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02-10-2011, 09:11 PM	#3
blisstik Lieutenant Colonel 159 Rep 1,677 Posts Drives: E92 Join Date: Jul 2009 Location: California iTrader: (14)	Really? High flow catted downpipes are 300 cells or less. I'm thinking they are between 500-600 but no one really knows for sure.
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02-11-2011, 01:33 AM	#4
enrita Major General 161 Rep 7,377 Posts Drives: 335i - Big turbos Join Date: Sep 2008 Location: Italian in Sweden iTrader: (0)	think is 600 cells both dps and middle cats. __________________ 07 335i AT - MOTIV 750 - MHD E85 BMS flash - BMS PI - JB4G5 - Okada Coils - NGK 5992 Plugs - Helix IC - Snow Stg. 3 - Stett CP - Custom midpipes with 100 HJS Cats - Bastuck Quad - PSS10 - QUAIFE LSD - BMS OCC - Forge DVs - AR OC - ALCON BBK - M3 Chassi - Dinan CP - Velocity M rear Toe arms - Advan RZ-DF - LUX H8 - Level 10 AT upgrade
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02-11-2011, 12:31 PM	#5
MKR_DmD Lieutenant 6 Rep 494 Posts Drives: 16 Jeep Cherokee Join Date: May 2010 Location: Germany iTrader: (3)	I would guess no less then 600. High flow cats are expensive and cannot pass smog. With a 10 year warranty on SMOG parts they want the highest cells possible.
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