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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, Mar-07-2009, 01:46:32 AM   #1
suprafabs
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Default opinion on Jvt e46 m3 header?

what you guys think? are the Jvt headers worth it?
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Old Sat, Mar-07-2009, 01:48:18 AM   #2
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holy baby jesus PLEASE search. This topic has been review SO many times.
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Old Sat, Mar-07-2009, 01:48:24 AM   #3
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just got mine installed and it feels like pulls much harder...You can find some more info here..http://www.m3forum.net/m3forum/showthread.php?t=193538
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Old Sat, Mar-07-2009, 01:54:03 AM   #4
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thanks....
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Old Sat, Mar-07-2009, 02:03:39 AM   #5
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Might I say search. This is on more threads than I can count but here is a quick consolidation.

They rub on the motor mount. The O2 Sensors run into things given the ill fitting bung locations. The flanges do not line up well because the metal warps when they weld it all together too quickly. The flanges on some of them are not flat so do not seal against the head well. The collector is a very poor design resulting in a couple less hp than better designed headers.

If you can put up with all that they are cheap and give you a decent hp gain. Installing them requires bending, tweaking, and a good amount of swearing then a follow up of bending things to stop the squeaking from things rubbing that you find later on.
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Old Sat, Mar-07-2009, 02:04:36 AM   #6
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Quote:
Originally Posted by Goran View Post
holy baby jesus PLEASE search. This topic has been review SO many times.
How would you know? You just joined last month.



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Old Sat, Mar-07-2009, 04:20:40 AM   #7
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Quote:
Originally Posted by ohnoes View Post
How would you know? You just joined last month.



He did his homework.


Last edited by djm3; Sat, Mar-07-2009 at 04:24:16 AM.
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Old Sat, Mar-07-2009, 04:24:35 AM   #8
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Quote:
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He did his homework.

He's Popov.
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Old Sat, Mar-07-2009, 05:05:19 AM   #9
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ohnoes!
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Old Sat, Mar-07-2009, 05:19:26 AM   #10
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Quote:
Originally Posted by NorthwestM3 View Post
Might I say search. This is on more threads than I can count but here is a quick consolidation.

They rub on the motor mount. The O2 Sensors run into things given the ill fitting bung locations. The flanges do not line up well because the metal warps when they weld it all together too quickly. The flanges on some of them are not flat so do not seal against the head well. The collector is a very poor design resulting in a couple less hp than better designed headers.

If you can put up with all that they are cheap and give you a decent hp gain. Installing them requires bending, tweaking, and a good amount of swearing then a follow up of bending things to stop the squeaking from things rubbing that you find later on.
never had any issues with mine , everything worked perfect .
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Discussing opinion on Jvt e46 m3 header? 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)