My E30 M20 turbo writeup (lots of pics)
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08-06-2009, 06:28 PM
2nd Gear Member
Join Date: Oct 2004
Location: Guelph/Waterloo, Ontario
Had to rework the TPS adapter afterwards due to interference with the manifold:
The intake plumbing was fairly straight forward, using a minimal amount of tubes/couplings.
Bought a big, honkin’ 3”-4” adapter for the compressor inlet. Used an existing 3” K&N intake I had lying around for the pre-turbo part of it. Also built a shield around the filter to prevent road debris, but still allow adequate airflow and drainage in the event that water starts pooling there.
Had to notch some of the headlight bucket for it to fit properly. I was able to run the 2.5” tube under the headlights, although it’s a bit tight. 3” would be very difficult.
Some welded tubes to make life a bit easier/cleaner. You can see one of the flanges welded on for the DV.
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