Have you read all the entries regarding more power? I assure you that you can save a world of time and trouble by reading the hundreds of hours that have been tested, applied and regretted on this forum. I am in agreance with you, I have never seen additional warm air reduce power! You will need an intake!
The SRT-6 is a strange bird indeed. Glad to see your exploring and sharing.
Thanks for anything you may contribute.
Enjoy the Ride...
Mike