DC&O Manifold Independent TB or not?

Last night I spent three hours on the Dyno trying to resolve some driveablity problems, while trouble shooting the injectors, we pulled one as the engine ran and had no change in the way the engine was running. We than pulled another on the same side with no change. Finally we pulled all four on the same side and the engine sagged but continued to run. It took the pulling of five injectors before the engine died. I also could repeat this with any combination of injectors.

I was under the impression that the Throttle Bodies were independent thus the requirement of balancing each one, but if the above condition is correct wheres the independence.

Peter
 
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