I'm running the 90deg exhaust manifold out of some kind of military truck(seems like an 8.xL cummins). While the ports are the same configuration, the runners are larger in this manifold than the stock manifold. Will this hurt my boost? I know it will flow more, but I was told a long time ago that turbo response has something to do with keeping the exhaust hot and compressed so it expands in the turbine? Or something like that....
It's on a 92 12 valve. I used the 90deg because it's swapped into an OBS F350 and it's perfect for clearing the evap box. I went with the 16cm housing but it doesn't seem to have the same power as it did when it was in the Dodge.