UL,

All of my tubing is 3" aluminum heavily wrapped in insulation and header tape... I think the only way for me to be sure of gains and losses is with the dynometer. I think my "ducting" is an amateur work of art but if it gives HP losses, it's gotta go

 

[QUOTE]Originally posted by shaner
[B]Hey guys... my grills are not consumer parts... I bought a sheet of 1/4" honeycomb perforated aluminum and made my own grill.