FP3065 with manifold wastegate

[NDgsx]

It's not about controlling boost, but exhaust flow. If you have a proper collector this isn't much of an issue (don't know about the turbonetics manifold, I've never looked inside one.
It's more an issue of the people putting them on a stock manifold. The collector between the 1 and 4 runners does not have much dividing it, and it is very easy for gas to flow betwen the two, without going into the turbine housing.
Say you mount it on the #1 runner, when the pulse comes out of #4 a good amount of gas will pass directly over, and out of the wastegate. Some won't go out of the wastegate and will bounce off the #1 exhaust valve. At the correct RPM some gas will try to rush into the #1 cylinder.
How large of a effect this will have out of the world of theory I'm not sure of, it might be extremely small. I'm not going to say one way or the other whether the effect will be measurable.
I'm a anal perfectionist, I scrutinize the smallest and stupidest of details.

 

[DSMJim]

Turbonetics manifolds collectors are not bad but not great if you do not do some work to them they can be pretty descent. This is my own units before and after which is why I argue with the wastegate of one runner issue when it comes up.

 

[greycar]

I say if he doesn't know then its too much for him to run.