euro headers vs us question

ZStig · 04-16-2011, 07:04 PM

So our cars have 333hp, and euro ones have 343hp crank right? Yet people who just switch to euro headers, are gaining 15-20RWHP. Doesn't make sense to me. And why are europeans selling their headers, are they upgrading to something that gives significant gains over stock euro headers?

inTgr8r · 04-16-2011, 09:28 PM

wondering the same things.

kav · 04-16-2011, 10:29 PM

My Euro headers came off a wrecked car. Are the Euro Z4Ms really upgrading their headers? Or are the headers showing up just off the E46M cars that have been wrecked?

Z4-VILLA · 04-17-2011, 10:16 AM

dont k now dont care....my euro headers are in and sound amazing and butt dyno says holy crap this is faster.
cant wait for an x pipe

RobMCoupe · 04-17-2011, 05:48 PM

Quote:

Originally Posted by Roffle Waffle

So our cars have 333hp, and euro ones have 343hp crank right? Yet people who just switch to euro headers, are gaining 15-20RWHP. Doesn't make sense to me. And why are europeans selling their headers, are they upgrading to something that gives significant gains over stock euro headers?

S54 M3/Z4M use the same headers so it doesn't matter where it came from. I did read comparison between SS Step V2 and Euro. They both yield about the same HP gains. Euro have more gains at lower RPM while SS gains are at higher RPM. Euro is better for day-to-day/street. SS is better for tracks where you are constantly running high RPMs.

flat_out · 04-17-2011, 06:07 PM

A few of us had a good deal on SS so swapped to SS stepped headers recently. The car spends most time on track so this was a worth while mod to make. It was the final box to tick as i'd already swapped to 100 cell race cats and an after market back box prior.

Am due to track the car for the first time at the Ring in 2011 this coming w/e so will see if RobMCoupe's assessment holds true - i hope it does...

VinnieAces · 04-17-2011, 06:14 PM

still no direct answer to OP's question, am still wondering this too

ZStig · 04-17-2011, 06:17 PM

A euro z4m dyno would be a start I guess

inTgr8r · 04-17-2011, 06:19 PM

Quote:

Originally Posted by flat_out

A few of us had a good deal on SS so swapped to SS stepped headers recently. The car spends most time on track so this was a worth while mod to make. It was the final box to tick as i'd already swapped to 100 cell race cats and an after market back box prior.

Am due to track the car for the first time at the Ring in 2011 this coming w/e so will see if RobMCoupe's assessment holds true - i hope it does...

Excellent!!
Be sure to let us know how all about it.

RobMCoupe · 04-17-2011, 08:30 PM

Quote:

Originally Posted by Roffle Waffle

So our cars have 333hp, and euro ones have 343hp crank right? Yet people who just switch to euro headers, are gaining 15-20RWHP. Doesn't make sense to me. And why are europeans selling their headers, are they upgrading to something that gives significant gains over stock euro headers?

This thread might help explain the difference.

http://www.zpost.com/forums/showthread.php?t=107276

ZStig · 04-17-2011, 11:19 PM

Quote:

Originally Posted by RobMCoupe

This thread might help explain the difference.

http://www.zpost.com/forums/showthread.php?t=107276

says the difference is closer to 5-6hp, not 15rwhp

pokeybritches · 04-18-2011, 09:45 AM

IIRC, the Euro cars have a different section 1 with a beefier cat to make up for the lack of cats in the headers.

fr8tdog · 04-18-2011, 09:50 AM

Quote:

Originally Posted by pokeybritches

IIRC, the Euro cars have a different section 1 with a beefier cat to make up for the lack of cats in the headers.

Thanks for the clarification... always good info from you.

04-16-2011, 07:04 PM	#1
ZStig instagram 997turbotom 279 Rep 7,377 Posts Drives: Interlagos Z4MR Join Date: Jun 2008 Location: Delray Beach, FL iTrader: (4)	euro headers vs us question So our cars have 333hp, and euro ones have 343hp crank right? Yet people who just switch to euro headers, are gaining 15-20RWHP. Doesn't make sense to me. And why are europeans selling their headers, are they upgrading to something that gives significant gains over stock euro headers? __________________
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04-16-2011, 09:28 PM	#2
inTgr8r Lieutenant General 2426 Rep 11,667 Posts Drives: M2 Comp Join Date: Mar 2006 Location: Toronto iTrader: (10)	wondering the same things. __________________ '21 M2C Hockenheim Silver '18 718 Cayman S Lava Orange (sold) '13 E92 M3 Santorini Blue (sold) '07 Z4 M Coupe Alpine White (sold)
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04-16-2011, 10:29 PM	#3
kav Lieutenant 49 Rep 401 Posts Drives: Z4M Join Date: Oct 2007 Location: Canada iTrader: (1)	My Euro headers came off a wrecked car. Are the Euro Z4Ms really upgrading their headers? Or are the headers showing up just off the E46M cars that have been wrecked?
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04-17-2011, 10:16 AM	#4
Z4-VILLA Banned 111 Rep 2,460 Posts Drives: Z4M Hardtop Roadster Join Date: Feb 2009 Location: Classified iTrader: (0)	dont k now dont care....my euro headers are in and sound amazing and butt dyno says holy crap this is faster. cant wait for an x pipe Last edited by Z4-VILLA; 04-17-2011 at 02:14 PM..
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04-17-2011, 06:07 PM	#6
flat_out Private First Class 8 Rep 125 Posts Drives: Z4MC Join Date: Oct 2009 Location: UK iTrader: (2)	A few of us had a good deal on SS so swapped to SS stepped headers recently. The car spends most time on track so this was a worth while mod to make. It was the final box to tick as i'd already swapped to 100 cell race cats and an after market back box prior. Am due to track the car for the first time at the Ring in 2011 this coming w/e so will see if RobMCoupe's assessment holds true - i hope it does...
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04-17-2011, 06:14 PM	#7
VinnieAces Lieutenant Colonel 92 Rep 1,603 Posts Drives: Imola Red Z4MC Join Date: Apr 2010 Location: Ontario, Can iTrader: (2) Garage List 2006 Z4 M Coupe [8.00]	still no direct answer to OP's question, am still wondering this too __________________ ///M - Some Mods 'N Stuff
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04-17-2011, 06:17 PM	#8
ZStig instagram 997turbotom 279 Rep 7,377 Posts Drives: Interlagos Z4MR Join Date: Jun 2008 Location: Delray Beach, FL iTrader: (4)	A euro z4m dyno would be a start I guess __________________
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04-18-2011, 09:45 AM	#12
pokeybritches Colonel 479 Rep 2,782 Posts Drives: ESS/G-Power Z4M, VF Z4, 996tt Join Date: Sep 2009 Location: Los Angeles iTrader: (12) Garage List 2006 BMW Z4M [10.00] 2006 BMW Z4M [8.50] 2003 BMW Z4 3.0i [9.00]	IIRC, the Euro cars have a different section 1 with a beefier cat to make up for the lack of cats in the headers. __________________ VF Engineering Z4 3.0i, ESS Z4M, G-Power Z4M, 996 Turbo
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