Any catted header dynos?

StealYourFace · 10-01-2014, 05:44 PM

I am inching closer to headers for the 330i, and I need a catted exhaust.

I will either:
Get a catless header and retain the secondary cats, or
Get catted headers (magnaflow or AFE) and a catless secondary pipe.

My concern with getting catless headers are an engine light, and that the secondary cats may be shot/broken up/gone and I would need new ones. My concern with catted headers is that there won't be a noticeable improvement in power.

I am really after something that will give me a ~10% improvement in torque to move this sled

MarkkyyMan · 10-01-2014, 06:50 PM

Catless headers and keep secondary kitties.

Taskmaster · 10-01-2014, 07:05 PM

Quote:

Originally Posted by MarkkyyMan

Catless headers and keep secondary kitties.

That's the rule I want to go by.

Mike. · 10-02-2014, 11:40 AM

I think there is one person on here with the AFE catted headers... I think he has the N53 motor argggg I forgot his name

Mavus · 10-02-2014, 11:52 AM

Quote:

Originally Posted by StealYourFace

I am inching closer to headers for the 330i, and I need a catted exhaust.

I will either:
Get a catless header and retain the secondary cats, or
Get catted headers (magnaflow or AFE) and a catless secondary pipe.

My concern with getting catless headers are an engine light, and that the secondary cats may be shot/broken up/gone and I would need new ones. My concern with catted headers is that there won't be a noticeable improvement in power.

I am really after something that will give me a ~10% improvement in torque to move this sled

Supersprint and a tune will give you a nice bump but not 10% tq increase. I wouldn't consider anything else. Try to reduce weight as much as possible i.e. seats, battery, wheels.

BudVlad · 10-02-2014, 04:43 PM

Quote:

Originally Posted by Emozoo

I think there is one person on here with the AFE catted headers... I think he has the N53 motor argggg I forgot his name

I have afe headers on N53 with supersprint catless exhaust. I still didn’t have it on dyno so I can’t comment on power gain.

tuphdc · 10-02-2014, 05:33 PM

Quote:

Originally Posted by BudVlad

I have afe headers on N53 with supersprint catless exhaust. I still didn’t have it on dyno so I can’t comment on power gain.

what does butt dyno say?

Mike. · 10-02-2014, 08:06 PM

Quote:

Originally Posted by BudVlad

I have afe headers on N53 with supersprint catless exhaust. I still didn’t have it on dyno so I can’t comment on power gain.

yes this is who I was talking about

BudVlad · 10-03-2014, 02:33 AM

Quote:

Originally Posted by tuphdc

what does butt dyno say?

There is an improvement but without dyno it’s hard to tell how much.

hassmaschine · 10-03-2014, 08:40 AM

the engine light can be disabled. it's the readiness monitor that's not easy to fool. I think you'd have to move O2 sensors around and alter some of their parameters so they will read ready.

10-01-2014, 05:44 PM	#1
StealYourFace Lieutenant Colonel 270 Rep 1,794 Posts Drives: F30 328i M 6mt, E36 M3 Join Date: Jul 2009 Location: Shakedown Street, Buffalo NY iTrader: (1)	Any catted header dynos? I am inching closer to headers for the 330i, and I need a catted exhaust. I will either: Get a catless header and retain the secondary cats, or Get catted headers (magnaflow or AFE) and a catless secondary pipe. My concern with getting catless headers are an engine light, and that the secondary cats may be shot/broken up/gone and I would need new ones. My concern with catted headers is that there won't be a noticeable improvement in power. I am really after something that will give me a ~10% improvement in torque to move this sled __________________
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10-01-2014, 06:50 PM	#2
MarkkyyMan Captain 41 Rep 701 Posts Drives: 2010 BMW 128i Join Date: Dec 2009 Location: Indiana, U.S. iTrader: (0)	Catless headers and keep secondary kitties.
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10-02-2014, 11:40 AM	#4
Mike. Mike: Everyone's Pal 2047 Rep 2,974 Posts Drives: F80 M3 Join Date: May 2013 Location: Eastern Long Island iTrader: (5) Garage List 2013 BMW 335xi [10.00]	I think there is one person on here with the AFE catted headers... I think he has the N53 motor argggg I forgot his name __________________ [CENTER] 2021 6.2L Trail Boss, 6" BDS lift, Chevy Performance intake, 35" Nitto Grapplers, 20" Fuel wheels
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10-03-2014, 08:40 AM	#10
hassmaschine Major General 3989 Rep 7,212 Posts Drives: "NBO" 330i Join Date: Jun 2014 Location: earth iTrader: (0)	the engine light can be disabled. it's the readiness monitor that's not easy to fool. I think you'd have to move O2 sensors around and alter some of their parameters so they will read ready.
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