Chaitana:

I flew my Flash with the Falcon and then the Super Eagle. Yes, use the ducting which leads to the bypass. However, in all tests we performed, the turbine (both) acutally performed better and ran COOLER with the bypass cover left off. Those inlets are small so the benefit of the duct work is it directs ALL incoming air to the turbine.

The benefit of leaving the bypass cover off, is the turbine gets any excess air which enters through the cockpit and nose gear area (yes even with the door) and finds its way to the turbine. Additionally, during cool down, the turbine cools down quicker and does not build up heat when the auto cool stops. Last, the pressure area created at the nozzle / pipe entrance is enhanced by additional air which results in lower pipe temps and a cooler fuselage. The protection from fire damage should you have a hot start,is lost.

Last, please do cut the NACA inlets in the bottom of the fuse as suggested. Again, really helps with cooling the pipe and keeping the fuse cooler.

Best regards,
Eric Clapp