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Forced Induction Forum
Discuss supercharging, turbocharging and even nitrous and water injection here.

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Old 06-06-2015, 09:46 PM   #61
Hobbit382
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Originally Posted by Imolabmw View Post
Awaiting your pieced together for cheap turbo kit
It's still not as cheap as one would think.
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Old 06-06-2015, 09:49 PM   #62
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What did you do about the flange for the secondary air pump? I'm assuming you either made your own block off plate or ordered one, but in that case, what did you do about the wiring for it? did you get a simulator, or make your own? Just curious.
The m50/52 s50/52 had secondary air going into the manifold, not the head. If I were doing a m54 I would use the block off plate. The secondary air pump is tuned out of the ms43
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Old 06-06-2015, 10:22 PM   #63
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Originally Posted by Hobbit382 View Post
The m50/52 s50/52 had secondary air going into the manifold, not the head. If I were doing a m54 I would use the block off plate. The secondary air pump is tuned out of the ms43
Ah, so when you swapped manifolds the port disappeared with it? Jealous, I haven't been able to start my car because I'm waiting to get the balls to ask my neighbor if I can use his welder. Also, what coils are those? I love the look of the square connectors. Wish the m54 had them, I wonder if you can do a swap or something?
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Old 06-07-2015, 01:54 AM   #64
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Awesome build Alex
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Old 06-07-2015, 12:29 PM   #65
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Ah, so when you swapped manifolds the port disappeared with it? Jealous, I haven't been able to start my car because I'm waiting to get the balls to ask my neighbor if I can use his welder. Also, what coils are those? I love the look of the square connectors. Wish the m54 had them, I wonder if you can do a swap or something?

The coils are stock obd1 coils, no big deal. The Audi coils on my s52tu, now those are cool.
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Old 06-07-2015, 12:38 PM   #66
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Awesome build Alex
Thank you!

I ordered up the rally road adapter block for the oil feed

http://www.rallyroad.net/content/oil-feed-adapter-block

A weld on aluminum bung for the oil return

For the coolant I ordered a 38mm coolant temp adapter for the lower hose, and a 14 X 1.5 to 6an adapter for the drain plug in the block.

Hopefully that takes care of my coolant and oil plumbing.
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Old 06-07-2015, 12:44 PM   #67
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The coils are stock obd1 coils, no big deal. The Audi coils on my s52tu, now those are cool.
Did you work out the dwell-time for those?
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Old 06-07-2015, 01:01 PM   #68
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Did you work out the dwell-time for those?
Yes, with these coils there are 2 problems to overcome. First is they need to see a 5v input to trigger them and second is they like to see 2.5ms of dwell across the entire rpm range, they are "smart coils". With the ms42 i had already tapped into the dme for a piggyback I was using so it was easy to use that 5v input for the coils. Then with bimmer editor I was able to adjust the dwell, the problem I ran into is the ms42/43 monitors the current going to the coils and increases the dwell to achieve that current, well since I tapped into the dme before the transistor it doesn't see any current. When I switch it over to ms43, I will build a circuit into the ignition harness that provides a 5v input outside of the dme. Your ms43 xdf allows to adjust ignition current set point, so I should be able to play with that also.
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Old 06-07-2015, 04:03 PM   #69
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And we can adjust the IgnitionCurrentFeedback also
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Old 06-07-2015, 04:11 PM   #70
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Originally Posted by Hobbit382 View Post
The coils are stock obd1 coils, no big deal. The Audi coils on my s52tu, now those are cool.
Damn, those are nice too. I'm currently doing a turbo build like you are, not with the cxracing kit though. My "inspiration" for the look of my engine bay is this, that's why I asked about the coils.

http://i.imgur.com/12LxlYO.jpg
http://i.imgur.com/PjVZw3I.jpg
http://i.imgur.com/0nukgPr.jpg

Last edited by Byte[]; 06-07-2015 at 04:28 PM.
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Old 06-07-2015, 08:39 PM   #71
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Damn, those are nice too. I'm currently doing a turbo build like you are, not with the cxracing kit though. My "inspiration" for the look of my engine bay is this, that's why I asked about the coils.

http://i.imgur.com/12LxlYO.jpg
http://i.imgur.com/PjVZw3I.jpg
http://i.imgur.com/0nukgPr.jpg
That's Jon, aka smallsnail. He has a e34 on its 4th iteration? But surprising with all his knowledge on wiring still uses stock coils, guess that proves that they work.
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Old 06-07-2015, 08:44 PM   #72
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That's Jon, aka smallsnail. He has a e34 on its 4th iteration? But surprising with all his knowledge on wiring still uses stock coils, guess that proves that they work.
I have an m54, and the coils on those are roundish, completely different style. Wish there were coils that had the square style, or maybe (I doubt this would work) swap the obd1 coils into the engine.
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Old 06-07-2015, 08:53 PM   #73
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I have an m54, and the coils on those are roundish, completely different style. Wish there were coils that had the square style, or maybe (I doubt this would work) swap the obd1 coils into the engine.
You could probably get them to work, even though the bolt pattern is little different. My personally preference is performance before looks. If it looks cool that's just a bonus.
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Old 06-07-2015, 11:37 PM   #74
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You could probably get them to work, even though the bolt pattern is little different. My personally preference is performance before looks. If it looks cool that's just a bonus.
Know of any good performing and looking coil packs? And wiring harnesses? Mine has red white and blue wires all over the place. Btw, I'm confused as to why you're posting updates here if you didn't start the thread? Not trying to come off rude, I just noticed that this wasn't your thread a couple minutes aog.

Last edited by Byte[]; 06-07-2015 at 11:38 PM.
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Old 03-30-2017, 12:55 PM   #75
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I would love to see some updated pics of the finished project, as I'm considering dropping the CXRacing kit into my 325xi.

The secondary air pump delete helps free up some space on the passenger side of the engine bay, but I'm curious what else you did with the other ancillary bits and pieces that were in the way, like the WW fluid reservoir, etc...
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Old 03-30-2017, 01:09 PM   #76
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Also - does anyone here have any experience with ECU tuning by ecuprogram.com in Calgary?
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Old 03-30-2017, 02:28 PM   #77
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Originally Posted by Hobbit382 View Post
The coils are stock obd1 coils, no big deal. The Audi coils on my s52tu, now those are cool.
S52TU... Do you have a build thread somewhere?
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