That's what I will try over the weekend. Thanks for the tip there Billybob. I went to Home Depot last weekend looking for something other than the 3 inch bendable dryer vent hose that I have been using up till now. It sort of met it's death on the drive up last week as it came off the oval at the airbox and got sucked into the fins of the alternator. Well a good part of it did anyway. So I thought they might have some 3 inch pipe I could use. Well not like I thought but the guy gave me a piece of that black thinwalled drainage pipe for free. So I am going to heat that up and see if I can make the oval and the flat over the VC and get past the IP front and to the 4 inch adapter I have in the grill. If I can do that I will have RAM air from 4 inch down the oval at the airbox. Should be a bit better that what I have now.
If your drainage line fails you, take a look at irrigation pump suction hose. It's smooth inside, available in a bunch of sizes, won't crush, and flexible but not noodley. You can usually buy it by the foot for a couple buck a foot from any place that sells irrigation parts, or over the phone if you're not in that kind of neighborhood. It's soft enough you could squish it into an oval with a vice I think.
Luke
That is the type of hose I was after. Smooth bore but kind of squishy. I need to make the oval to round change to avoid hacking on the airbox. I don't think that is necessary for extra air to get in there. Just need the bigger diameter at the front end. The rest takes care of itself.
Time to hit the Grange.