Finally getting stuff done on our cars

[Goat Blower]

Spool isn't the problem, it's averting enough exhaust gases away from the turbo to keep the boost at a steady level. With a divided manifold and a single gate, the turbo is seeing less exhaust pressure from two of the runners than the other two. A single wastegate on a tubular manifold is usually plumbed into a merged collector, not a divided. This is similar to the way Buschur used to weld an HKS external on the number one runner of a stock manifold or the old cast T3 manifolds. I'm guessing this will cause some erratic boost control with this size turbo, but practice outweighs theory everytime. We'll see how it comes out. It shouldn't be that tough to add another wastegate later.