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Go Back   E46Fanatics > Tuning & Tech > Driveline, Engine & DME Tuning

Driveline, Engine & DME Tuning
Talk about driveline improvements, NA tuning and DME tuning your E46 BMW here. This includes diffs, intakes, exhausts, chips, software and OBD tuning.

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Old 04-24-2011, 11:33 PM   #81
shm21284
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Update

More pics, should be done with entire system tomorrow. I must say, this is entirely too much work. I don't know if I ever want to repeat this **worn out**

3-1 Collector. Had to weld on the inside to make a complete seal. This involved dissecting the slip over part of the collector to allow room for my small TIG torch to fit inside, then re-welding the sectioned part of the collector back in. After doing this, I know there's a better way, but it is what it is.



On the car:







Welding the primaries to the engine flange:



Primaries finished!!



















Started on the secondary collector. This peace is a 22deg merge style that I fabricated. It also has a 2.25" to 2.5" x 10" length megaphone on it. Here's the megaphone I made out of a normal piece of 2.5" 304 tubing:





And the entire collector:



All done for the night, hope to have it complete tomorrow!

Note that in the shots where it is bolted to the engine, the engine is being supported by a jack stand, so it is not located left to right. There is substantially more room between the primary and the frame than those shots depict.
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Old 04-24-2011, 11:58 PM   #82
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Absolutely incredible. Mad props, Seth! Can't wait for the dyno!
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Old 04-25-2011, 08:42 AM   #83
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I must say, this is entirely too much work. I don't know if I ever want to repeat this **worn out**
Hey Hey Hey, if these produce numbers, there has be a way for more people to get there hands on them.

Its been said before, you gots mad skills.
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Old 04-25-2011, 09:20 AM   #84
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Incredible work. I hope you get these coated and keep them in great shape!
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Old 04-25-2011, 10:11 AM   #85
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Incredible work. I hope you get these coated and keep them in great shape!
Nope, since they are 304 they won't corrode, and to me, an aged (yellowed) stainless looks awesome.

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Old 04-25-2011, 10:27 AM   #86
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You're not even going to wrap them? What about heat transfer? Easy way to destroy your VCG.
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Old 04-25-2011, 10:42 AM   #87
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You're not even going to wrap them? What about heat transfer? Easy way to destroy your VCG.
The factory gasket has a heat shield built into it to protect the valve cover and gasket

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Old 04-25-2011, 10:47 AM   #88
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wrapping the headers destroys them, i didnt coat my headers and my engine bay isnt any hotter than before when i had the stock headers...the metal turned blue/yellow which looks kind of cool, but you can barely see the headers because of the heat shields...
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Old 04-25-2011, 10:49 AM   #89
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Are you going to be able to keep the heatshields and bolt those up? I had to remove mine to put on my Techniks.

I had mine Swain Coated. I can touch them within minutes of turning off the car. Your VCG is only a fraction of he expensive plastic/rubber under the hood. Keeping the temps down will help preserve some of it.

Either way, nice fab work.

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The factory gasket has a heat shield built into it to protect the valve cover and gasket

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Old 04-25-2011, 12:53 PM   #90
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Are you going to be able to keep the heatshields and bolt those up? I had to remove mine to put on my Techniks.

I had mine Swain Coated. I can touch them within minutes of turning off the car. Your VCG is only a fraction of he expensive plastic/rubber under the hood. Keeping the temps down will help preserve some of it.

Either way, nice fab work.
Yep.

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Old 04-25-2011, 03:01 PM   #91
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Are you going to be able to keep the heatshields and bolt those up? I had to remove mine to put on my Techniks.

I had mine Swain Coated. I can touch them within minutes of turning off the car. Your VCG is only a fraction of he expensive plastic/rubber under the hood. Keeping the temps down will help preserve some of it.

Either way, nice fab work.
Yeah I wasn't sure if you were going to be able to incorporate the OEM Exhaust gaskets with the headers. Glad it's gonna work out for you! I'd still check the VCG periodically.
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Old 04-25-2011, 06:21 PM   #92
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subscribed to hear about the results, it's great to see someone trying something new in the header area! =]
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Old 04-26-2011, 08:39 PM   #93
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Old 04-27-2011, 12:21 AM   #94
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Yeah, once again I over estimated my skills and didn't finish it this weekend. I still got the easy part to finish (exhaust) except I have to make hangers, which will take some time.
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Old 04-27-2011, 12:30 AM   #95
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Shoot! I was hoping to see it fully mocked up this week Thanks for the update, Seth.
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Old 04-27-2011, 12:54 AM   #96
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Almost forgot. Here are the secondary pipes and collector:

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Old 04-27-2011, 01:22 AM   #97
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Are those 18 inches as well?
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Old 04-27-2011, 06:17 PM   #98
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Are those 18 inches as well?
Yes.

I had to stop fabricating because I was tired, but also I needed to get some 2" v-bands to connect the secondary pipes up with a flanged connection. I originally got a 2.5" v-band for the outlet of the megaphone, but that v-band will not fit in the area where the megaphone ends without sticking out from under the car (and will inevitably get ripped off if I go off track or go over a speed bump). I have to stick the 2.5" v-band in the spot where the 1st muffler is, which has enough room for it. In this case, I would have a header and collector that is half the length of the vehicle! Also, I am not sure how I would bolt up the headers with the secondary pipes in the way.

On a side note, does anyone know where to find software to calibrate the stock BMW ecu? I'm pondering purchasing that instead of getting an AA tune. I believe this would be the better choice, and I could offer tuning services through Defined Autoworks.

Seth
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Old 04-27-2011, 08:17 PM   #99
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of course there is a slight difference in diameter of the megaphone but what happens if it was fitted the other way round? meaning bigger end at the collector?
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Old 04-27-2011, 09:06 PM   #100
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I don't know if this fill the bill..you can tune your own DME, but the software is tied to one DME w/ the $299 price tag. Alternatively the guy can also tune it for you..
http://forum.e46fanatics.com/showthread.php?t=740339

Cartune
http://www.mth-powerchip.de/_neu1407/


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Yes.
On a side note, does anyone know where to find software to calibrate the stock BMW ecu? I'm pondering purchasing that instead of getting an AA tune. I believe this would be the better choice, and I could offer tuning services through Defined Autoworks.

Seth

Last edited by kimodo; 04-27-2011 at 09:08 PM.
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