Originally Posted by
bender
Its obvious that it does stiffen the frame. There's no arguing that. Can you feel the difference? I have no clue. But obviously the manufacturers don't think that current cars (excluding luxury cars) need it enough to justify the implementation costs which stretch far beyond just the cost of the foam.
I agree. It will ultimately stiffen the frame. The question is not will it stiffen the frame. The question is after all that time and effort of taping off the holes and filling the car up and after spending $80 (or whatever it costs) on it will you notice a difference?
And this is where my problem is. I don't believe it. Just like when people change a suspension setting 1/1000 of a degree and claim it made a huge difference in turn in from the driver seat. Or go with a 0.1 lb lighter wheel, and claim to have a huge monumental decrease in unsprung weight that they can feel from behind the wheel.
I forget, how many of you guys are professional race car drivers? I'm not. I sure as hell can't feel any of that shit from the driver seat.
You feel it because you want to feel it.