8Stack efi & manifold vacuum pressures

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#1 (permalink)

12-08-2012, 09:36 PM

Rwillia4

CC Member

Join Date: Aug 2003

Location: San Diego, CA

Cobra Make, Engine: BDR #455, KC427W, TWM-FI

Posts: 727

Not Ranked

I have a TWM setup and you are right the individual stacks are connected under the fuel rails with tubing to a common plenum. The MAP sensor plummed from here. I don't have vacuum assist breaks (and I don't need it for this weight) but the engine is smooth and stable at idle so I think the common plenum works well. I run an XFI with MSD and haven't had any issues. The setup was pretty easy. Get a buddy you trust in the passenger to make f/a adjustments on the fly to smooth out the response through the rpm range under load.

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