Not sure about that
A well designed high mount can be just as good as a low mount. Low mount I would be using a dts item. They are nice heavy cast and are very open and direct compared to a standard manifold.
For high mount I would be using the latest item from radius fab recent testing by a well known shop has shown some nice gains over the standard nissan manifold.
I dont see to much difference in where the heat and everything is. Piping is very similar unless you do run a top mount cooler then a high mount might cause some dramas. Depending on turbo sometimes wastegate actuator placement can be fiddly on a high mount setup.






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