M370A=HomeMade

Motordyne

Sure, that is 'possible' but it would have to be torqued down really hard to do that. (as in waaay past the stock torque spec.) And the only real objective of torquing it down at all is to compress the soft silicone gasket beneath the manifold. Spec. torque is all that is needed and it will NEVER break.

As for designing an all new manifold, its not a viable or practical business option. The modified stock manifold from Nissan is very well engineered and basically is designed and manufactured with what is effectively unlimited Nissan resources. Such as the tooling to make that manifold. The tooling alone would cost somewhere between $200K-$350K to emulate. Then the piece part price of each manifold would be 2-3x higher than it is now.

With all that put together it would be completely unfeasible from a manufacturing point of view. The best and only practical/viable business option is to modify an existing stock part. Its the only way.

Otherwise, the M370 makes measurable/objective power and torque gains. And that is all it is really for. Power and Torque gains.