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View Full Version : Is direct port necessary for cruising injection?


Dust
08-12-2018, 10:11 PM
I’m looking at an MB OM648, BMW M57, or VW CBEA equipped vehicle, and interested in putting an HFS-4 to use. The intake manifolds are below. I’m wondering if a positive pressure (I think 5 psi on the OM648) at highway speeds will be enough to distribute somewhat evenly?

CBEA
https://www.idparts.com/images/cbea_cjaa_intake_manifold_2910.jpg

M57
https://www.railwayautospares.com/media/catalog/product/cache/1/image/9df78eab33525d08d6e5fb8d27136e95/i/m/img_6250_1.jpg

OM648
https://www.apriliaforum.com/forums/attachment.php?attachmentid=281386&d=1433220929