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      11-30-2019, 12:35 PM   #1
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Wagner stage 3 intercooler

Just noticed the Wagner stage III intercooler for the first time. I'm not sure how new it is or if anyone has experience with it. Thoughts?
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      11-30-2019, 12:58 PM   #2
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https://f87.bimmerpost.com/forums/sh....php?t=1667051

Haven’t seen any forum member reviews, yet.

Looks like it performs well, but I’m curious to hear real world feedback on throttle response/lag in transient conditions (stop & go traffic, on/off part throttle applications) bc of the larger IC volume.
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      11-30-2019, 01:36 PM   #3
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The test data posted are impressive, its a great option for stage 2 turbo applications
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      11-30-2019, 05:29 PM   #4
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At the price TBH it would probably be better to do a custom A2W intercooler set up using S55 components, you'll easily out perform an A2A intercooler, and receive lower IAT's due to water having an immense thermal capacity.
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      11-30-2019, 07:43 PM   #5
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Quote:
Originally Posted by F87source View Post
At the price TBH it would probably be better to do a custom A2W intercooler set up using S55 components, you'll easily out perform an A2A intercooler, and receive lower IAT's due to water having an immense thermal capacity.
Does someone have an off the shelf kit or step by step instructions?
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      12-01-2019, 01:03 AM   #6
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Quote:
Originally Posted by ZM2 View Post
Does someone have an off the shelf kit or step by step instructions?
Unfortunately no off the shelf kit, although this would be nice.

You will have to source all the parts yourself and DIY it. It shouldn't be too hard if you are really hands on as alot of the S55 stuff (intercooler, engine cover, overflow tank, J pipe) fits pretty well in the N55. The more tricky stuff is fabbing a 2 to 1 pipe to adapt it for the n55' single turbo and making the turbo outlet bend upwards towards the intercooler. This shouldnt be too hard if you can weld, but if not it shouldn't be too expensive for a shop to do it. The last little tricky bit is fitting a heat exhanger and pump + hoses.

Overall it is quite straight forward as it is a simple cooling loop, but there is some custom work to be done, and you will need to buy some parts.

But imo this is a 1000X better than buying a huge intercooler that can only drop IAT's at best to ambient temps at best, and a thinner heat exchanger won't block air flow to the radiator behind it like a thick intercooler will.
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      12-02-2019, 04:40 PM   #7
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Quote:
Originally Posted by F87source View Post
Unfortunately no off the shelf kit, although this would be nice.

You will have to source all the parts yourself and DIY it. It shouldn't be too hard if you are really hands on as alot of the S55 stuff (intercooler, engine cover, overflow tank, J pipe) fits pretty well in the N55. The more tricky stuff is fabbing a 2 to 1 pipe to adapt it for the n55' single turbo and making the turbo outlet bend upwards towards the intercooler. This shouldnt be too hard if you can weld, but if not it shouldn't be too expensive for a shop to do it. The last little tricky bit is fitting a heat exhanger and pump + hoses.

Overall it is quite straight forward as it is a simple cooling loop, but there is some custom work to be done, and you will need to buy some parts.

But imo this is a 1000X better than buying a huge intercooler that can only drop IAT's at best to ambient temps at best, and a thinner heat exchanger won't block air flow to the radiator behind it like a thick intercooler will.
Not really familiar with the process, but what about the B58 A2W intercooler? Isn't that already set up for a single turbo?
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      12-02-2019, 04:46 PM   #8
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Quote:
Originally Posted by eeyang92 View Post
Not really familiar with the process, but what about the B58 A2W intercooler? Isn't that already set up for a single turbo?
B58 A2W intercooler is integrated into the intake manifold and it has yet to be tested with the N55. However the issue is that the B58 manifold has the throttle body pointing towards the front of the car unlike the N55 which has it towards the driver side. This means that a 90 degree bend must be implemented to run towards the turbo and this is likely more difficult due to the lack of engine bay space vs. the S55 intercooler which would be perfectly placed for running a pipe towards the turbo outlet.
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      12-03-2019, 12:14 AM   #9
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Quote:
Originally Posted by F87source View Post
B58 A2W intercooler is integrated into the intake manifold and it has yet to be tested with the N55. However the issue is that the B58 manifold has the throttle body pointing towards the front of the car unlike the N55 which has it towards the driver side. This means that a 90 degree bend must be implemented to run towards the turbo and this is likely more difficult due to the lack of engine bay space vs. the S55 intercooler which would be perfectly placed for running a pipe towards the turbo outlet.
That makes sense, thanks!
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      12-03-2019, 12:49 AM   #10
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Quote:
Originally Posted by eeyang92 View Post
That makes sense, thanks!
No problem!

I wish someone could make a kit for our car that is PnP, since I'm pretty busy these days and I really don't have the energy anymore to fab up mounting hardware and piping. Then of course leak test it, drive it hard to check for issues and rinse and repeat if there are issues.

The only person I know on this forum that has the S55 intercooler is OGSHARK, but I can't seem to tag him. Then on other forums there is JRturboawd and one other person, but they have a 135i and N54 respectively.
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      12-03-2019, 01:31 AM   #11
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Quote:
Originally Posted by ZM2 View Post
Does someone have an off the shelf kit or step by step instructions?
https://www.n54tech.com/forums/showthread.php?t=50300
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