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      03-21-2015, 07:09 PM   #1
3002 tii
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N52: Supersprint Headers + Custom 3" Exhaust

Finally bit the bullet and went with Supersprint headers. Unlike my S54 counterparts, the N52 headers from Supersprint do not come with flanges. You are required to a) purchase their secondaries which are more expensive than the headers or b) go custom. I went with the latter.

After doing much research, I settled on a single 3" exhaust system. 2.5" would've been plenty but I happen to come across 3" parts for cheap. In many ways this resembles the Bimmerworld race exhaust setup. The exhaust system is 3" stainless steel, all mandrel bent with the following pieces in between:

Supersprint headers
Burns Stainless Y-adapter
Vibrant 3" resonator
Flowmaster Delta 40 muffler
Pypes 6" oval tip

Software wise I'm running Active Auto's N52 tune which takes care of the CEL.
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      03-21-2015, 07:11 PM   #2
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Arrived in December




Unwrapped:



SS headers installed, perfect fitment. Stock headers with giant cats!



As I mentioned above, the Supersprint headers for the Z4 do not come with flanges and I was prepared for a custom job. What I didn't realize was how far they headers would dump out. We ended up having to trim down the SS straight pipes to give further clearance for the rest of the system.



The curve exiting from the headers isn't ideal but it's just a function of the Supersprint design. The headers dump out so far it doesn't give much space to wrap the pipe around. However the current layout actually mimics very closely to factory design. We originally tried with 45* bend but there just wasn't enough space.

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      03-21-2015, 07:14 PM   #3
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Here's first clip recorded on phone. Still not happy with the rasp/buzz in the higher revs. Going to swap out the resonator for a Borla XR-1 but this is how it sounds in the meantime:

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      03-21-2015, 11:43 PM   #4
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That is pretty. Can't wait to hear it.

If you don't mind me asking do you have a price breakdown for the mods?

Is it worth the tune without doing headers and exhaust?
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      03-21-2015, 11:47 PM   #5
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That sounds really good. Nice job! Wish I had the knowledge to do something similar to my coupe
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      03-22-2015, 09:10 AM   #6
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Quote:
Originally Posted by E86Z View Post
That is pretty. Can't wait to hear it.

If you don't mind me asking do you have a price breakdown for the mods?

Is it worth the tune without doing headers and exhaust?
Headers $1400 shipped. No other company makes one so no choice on this but I heard AA may design one for Z4 if there's enough interest. If so I could see them coming to market at $999.

Y adapter (bought on classified) $150
Borla Mid Muffler $170
Flowmaster Rear Muffler $130
Exhaust tip $40

The rest will be whatever your shop charges for 3" stainless steel with mandrel bends, and their labor. I think the tune is worth it because it not only squeezes last few ponies but it'll get rid of the CEL and allow me to pass state inspection (checked via OBD).


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Originally Posted by jeebus87 View Post
That sounds really good. Nice job! Wish I had the knowledge to do something similar to my coupe
Thanks! You just have to find a trustworthy indy shop (I know easier said than done).
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      03-22-2015, 09:16 AM   #7
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wow that sounds awesome!!!!! Love it!!!
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      03-28-2015, 07:22 PM   #8
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wow that sounds awesome!!!!! Love it!!!
Thanks bud, appreciate it!
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      05-03-2015, 11:32 PM   #9
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Picked up the car this weekend and took her straight to the track. First event of the year so lap times were pretty slow but I was pretty happy with how the exhaust turned out.

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