I was watching a video about Ryan Tuerck's Ferrari powered Toyota."GT4586" where he talks about being disappointed with the exhaust note and that he is considering changing to an 8-into-1 exhaust collector.
As they discussed the exhaust set-up they showed how the exhausts from each bank joined in the middle to make an X-pipe before exiting either side of the nose.
I know that X-Pipes and H-pipes are common on cross plane V8s, and the reason for them is to do with exhaust pulses.
But is an X-pipe necessary for a flat plane crank V8, such as the Ferrari 458 engine?
In the original Ford GT40s the exhaust pipes from two cylinders from each bank would crossover to join two pipes from the opposite bank
By doing this Ford, as I understand it, avoided the need for an X-pipe or H-pipe.
Are X-pipes needed for other configurations, like V6, V10 and V12?
In the video Tuerck references a couple of cars that have 8-into-1 exhaust systems. These have Chevy LS engines with, presumably, cross plane cranks. Would changing to an 8-into-1 make as much difference to the Ferrari engine as it does for the LS?