So a couple months ago I found a set of Alpina headers for sale, I tried looking for some info on them or
sound clips but did not find much info on them regardless I bought them as i'd only seen a set of these
pop up many years ago.
The design is amazing and looks to be the best of both worlds shorty style but with long runners. I had them in storage for a bit and recently got a chance to finally install them, ordered some o2 bungs and bellows from vibrant performance and had a local friend fab up the stock midpipe to fit the Alpina headers.
I re-used the Active Gen3 catback i've been running, and the midpipe has the cats deleted (PO had them removed)
The results with this set up along with the Alpina headers is suprisingly quieter than the stock s52 headers
but at WOT it screams a wonderful motorsport sound. I did feel a minimal amount of torque loss I guess combined with the M50 manifold it was gonna occur, but as soon as it hits 3k it just pulls up top.
Currently running on the stock map so definetly gona need a tune to balance everything out, hopefully some
cams in the future along with injectors and 3.5 maf.
Took some quick video/sound clips but i'll try and get some tunnel runs later on
https://youtu.be/9xgOHhdSPe4
https://youtu.be/bgPtlxViLvw
Side to side comparison S52 vs Alpina
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The ///M getting ready for surgery
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Vibrant bellows and o2 bungs installed
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Engine Bay shot
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Spare S52 I used to see how the headers sit
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