I finally got around last night to playing with the intake side of my 245. I pulled everything out forward of the AMM, and played with a couple of peices of 3" PVC that I had laying about.

First off, unless some battery mount modifications are made you cannot pipe cold air directly from the original air intake hole in the front of the car into the AMM. Flexy-tube or a 45-90 degree bend will be needed at a couple of points to get around it. At least, with 3" PVC. 2.5" might work - but I don't know if they make that size, and I didn't have any around regardless.

I also didn't have an aftermarket filter on-hand to attach, so I ended up using the stock filter box assembly.

SO - what I ended up doing was: Removing the innards from the airbox - I believe the valve was non-functional anyway. Disconnecting the first two restrictive tubes connected to the intake side of the airbox. Removing the exhaust heat tube. Installing a small peice of exhaust heat tube to the heat end of the airbox and pointing it towards the front of the car (no splash shield at the moment).

I realize I'm going to have to modify that last part at some point, but for now it works. Rain is my enemy. ;)

Results:

Throttle response seemed better. Car was hard to keep running at first, probably due to it being rather cool and the decreased backpressure of my exhaust system. Mid to high power seemed better as well, since that's when the car is moving along at a good clip. I'll know more when I drive home tonight since it will be warmer.
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~Richard~
* 1986 Volvo 245 DL
* 1996 Plymouth Grand Voyager SE