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General E46 Forum
This is the place to get answers, opinions and everything you need related to your E46 (sedan, coupe, convertible and wagon) BMW!

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Old 02-09-2017, 01:19 PM   #1
Zhpe46
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E46 zhp problems and headers question

New to the forumz from canada just got a 04 330i zhp 4 door silver few questions hope you guys can help!

(A)I have a slight hesistation (lag) only between 2500-3000rpm you can feel it most in gears 3 and up under light throttle. You cannot notice it ever under full throttle.
also sometimes the car has a small hum vibration at idle, it comes and goes every 5-10 seconds but sometimes it idles fine. please let me know what you guys think it is its been bothering me for awhile now

(B)Also if i plan to track my car should i fix my oil filter housing gasket leak? its dripping all the way to the under sheild. Friend said he'd do it for 300 bucks not sure if it affects my car. if yes anything else i should do down there while everything is taken apart?

(C)do zhps come stock with a lighter flywheel?

(D)should i get spacers to make my car look better? if so what size and do they have any effect on performance?

(E)Last question is i just bought ebay headers and ive read everything here about them but noone answered if these headers have to be wrapped and if yes are they capable of cracking due to extreme heat and low quality? or is it just how well you wrap them (not too many layers)? Also should I use new studs or just the stocks ones? dont want anything coming loose for sure

thanks really looking forward to what you guys have to say!
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Old 02-09-2017, 01:44 PM   #2
Spannerhead
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Quote:
Originally Posted by Zhpe46 View Post
New to the forumz from canada just got a 04 330i zhp 4 door silver few questions hope you guys can help!

(A)I have a slight hesistation (lag) only between 2500-3000rpm you can feel it most in gears 3 and up under light throttle. You cannot notice it ever under full throttle.
also sometimes the car has a small hum vibration at idle, it comes and goes every 5-10 seconds but sometimes it idles fine. please let me know what you guys think it is its been bothering me for awhile now

(B)Also if i plan to track my car should i fix my oil filter housing gasket leak? its dripping all the way to the under sheild. Friend said he'd do it for 300 bucks not sure if it affects my car. if yes anything else i should do down there while everything is taken apart?

(C)do zhps come stock with a lighter flywheel?

(D)should i get spacers to make my car look better? if so what size and do they have any effect on performance?

(E)Last question is i just bought ebay headers and ive read everything here about them but noone answered if these headers have to be wrapped and if yes are they capable of cracking due to extreme heat and low quality? or is it just how well you wrap them (not too many layers)? Also should I use new studs or just the stocks ones? dont want anything coming loose for sure

thanks really looking forward to what you guys have to say!
B) You should fix the OFHG leak regardless of whether you plan to track the car. CCV replacement is easier with the OFH removed, from what I understand.

C) No.

D) Spacer thickness comes entirely down to personal preference. Front spacers will affect your steering geometry somewhat.

Any records of cooling system components being replaced? If not, those should be at the top of your list before spacers, headers, etc.
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Old 02-09-2017, 01:51 PM   #3
mikeetastic
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for A update your DME

http://forum.e46fanatics.com/showthread.php?t=966614
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Old 02-09-2017, 02:08 PM   #4
Chibo
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B) You're an asshole if you don't fix it before you get on track.

I've noticed most car track organizations don't bother teching and people don't seem to care about leaks. I guess the world is different when you're not personally sliding down the track because some lazy assbag dropped oil.
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Last edited by Chibo; 02-09-2017 at 02:10 PM.
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Old 02-09-2017, 03:43 PM   #5
Alex323Ci
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(A) sounds like the "zhp dip". you should update your software, back when the 330-zhp first came out people would complain about this (even magazines) and said the update really helps and changes the feel.

B, C, D already answered.
I personally don't like spacers, creates more problems/issues.
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Old 02-09-2017, 06:30 PM   #6
E46from416
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300 bucks for Ofhg lol that's crazy


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