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DIY: Do It Yourself
Post here to share or improve your wrench turning skills! All BMW E46 DIY tips, tales, and projects discussed inside. Learn to work on your car and know the right BMW parts you will need!

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Old 03-09-2010, 06:49 PM   #81
SL Blak Soldier
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Quote:
Originally Posted by 330inthe330 View Post
How did you go about getting the front top bolt off of the front header? And did you break the heat shields off the existing manifold gaskets? I've been yanking them up and down trying to break the little rivets, but it doesn't seem to be doing much. :/
that one was a bit weird. you have to go from like the side.

but i wasn't able to yank the heat shield off. i just pried it up a bit. Also i think jacking up the motor might help with that front top nut.
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Old 03-09-2010, 07:16 PM   #82
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I pulled my washer fluid reservoir out along with jacking the motor up and it was easy! As for the heat shields, I used a dremel tool to cut them off the gasket.

Good luck!

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Originally Posted by 330inthe330 View Post
How did you go about getting the front top bolt off of the front header? And did you break the heat shields off the existing manifold gaskets? I've been yanking them up and down trying to break the little rivets, but it doesn't seem to be doing much. :/
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Old 03-09-2010, 08:20 PM   #83
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Alright, got all the bolts off the front header, now i'm trying to actually get the header off. I broke one of the bolts at the midpipe/manifold gasket. The bolts on there are super rusted, my car only has 54k lol. Anyway I'm using the sawzall to get those off so that i can actually pull the front header off.
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Old 03-09-2010, 10:58 PM   #84
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Hi
Great write up
Can anyone tell me how much is the power gain just from the headers on 330 2001 coupe??
Thanks a lot
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Old 03-10-2010, 12:39 PM   #85
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dont ask me to back myself up with dyno charts on this one, but general consensus is that you will see anywhere from 15-25hp (25 sounds like a bit much) gains. Now whether that's HP, RWHP or BHP...I havent got the slightest clue.
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Old 03-11-2010, 10:08 PM   #86
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I picked up the new manifold nuts from the dealership today, all I have to do is reassemble everything with the new headers on and wire up my o2sim. I'm real excited to see how this turns out.
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Old 03-12-2010, 05:37 PM   #87
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So my back (shorter) header fits perfect, but the front (longer) one comes up a little short on the muffler side. It's got about half an inch gap between the flanges where the manifold meets the mid pipe. It's also a little off as far as height.
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Old 04-10-2010, 08:28 PM   #88
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Looks like I will be doing this install next weekend, thanks to TrippinBimmer for the great deal.

It seems to me that there is nothing during the install that is the PITA of the install. The only thing I stress is breaking bolts. I plan on soaking the bolts with PB Blaster the day before and day of just to be safe.
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Sometimes the Cheapest quote is the most expensive in the end
Number of Destroyed Newb Destroyers- 1
The Mods

Power Flex FCAB
Much more coming.....
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Old 04-10-2010, 08:46 PM   #89
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anyone know why the pic dont work?
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Old 04-12-2010, 12:27 PM   #90
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im gonna do the headers this friday. wish me luck.

been reading this DIY and i see that the only PITA are taking off the screws. (and if you get the wrong headers). Hopefully someone (SL Black Soldier) will go pass by my house on Friday and give me some tips to get the screws off easily.
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Old 04-12-2010, 01:13 PM   #91
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im gonna do the headers this friday. wish me luck.

been reading this DIY and i see that the only PITA are taking off the screws. (and if you get the wrong headers)
You and me both brother......I suggest getting some PB Blaster, it works a sh*t load better than wd-40
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Quote:
Originally Posted by jbeurotech View Post
Sometimes the Cheapest quote is the most expensive in the end
Number of Destroyed Newb Destroyers- 1
The Mods

Power Flex FCAB
Much more coming.....
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Old 04-12-2010, 03:18 PM   #92
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Originally Posted by TX_Bullet View Post
You and me both brother......I suggest getting some PB Blaster, it works a sh*t load better than wd-40
thanx! ill Definitely look at PB Blaster. thnx for the tip.
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Old 04-12-2010, 06:12 PM   #93
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Quote:
Originally Posted by Acidic View Post
im gonna do the headers this friday. wish me luck.

been reading this DIY and i see that the only PITA are taking off the screws. (and if you get the wrong headers). Hopefully someone (SL Black Soldier) will go pass by my house on Friday and give me some tips to get the screws off easily.
check to make sure they are the correct ones you got. just look at kpengs thread, use it at as reference . if you guys do it in the morning i'll stop by before work.
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Old 04-13-2010, 10:04 AM   #94
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check to make sure they are the correct ones you got. just look at kpengs thread, use it at as reference . if you guys do it in the morning i'll stop by before work.
we will do it on the morning... maybe ill start taking things off on thursday night. the easy part that i know how to take off lol.
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Old 04-13-2010, 12:20 PM   #95
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Oh man this is gonna be fun! hehe
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Old 04-13-2010, 12:37 PM   #96
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Can we remove the air pump once headers are installed
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Quote:
Originally Posted by jbeurotech View Post
Sometimes the Cheapest quote is the most expensive in the end
Number of Destroyed Newb Destroyers- 1
The Mods

Power Flex FCAB
Much more coming.....
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Old 04-13-2010, 03:54 PM   #97
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anyone have a clip of how a 325 will sound with headers and no resonators ?
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Old 04-13-2010, 04:01 PM   #98
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If you remove the air pump you'll get a check engine light. Not worth it IMHO. Does anyone know of a simulator to delete the air pump?
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Old 04-17-2010, 10:48 PM   #99
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Wow......what a 5hr DIY. I dont want to have to do it again a couple pointer though.

-Definitely break of the lil heat sheilds connected to the gasket.

-PB Blaster worked great

And on a side note I could in no way get the post cat 02 sensor in the front header. The rear header is to close.
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Quote:
Originally Posted by jbeurotech View Post
Sometimes the Cheapest quote is the most expensive in the end
Number of Destroyed Newb Destroyers- 1
The Mods

Power Flex FCAB
Much more coming.....

Last edited by TX_Bullet; 04-17-2010 at 10:52 PM.
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Old 04-18-2010, 02:02 PM   #100
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WOW! i love the sound!

i feel a little more pull than stock! its wasnt a bad DIY... its really easy its just the bolts, you have to be in the right position.... thnx for all the pointers guys!!!
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