CMS does it again!
That's good to hear, he'll be happier when the engine is allowed to breathe.
The Best V8 Stories One Small Block at Time
The lid has nothing to do with what filter he's using. And a lid can only improve airflow, regardless of how healthy a motor is. Why wouldn't you do it?
Either way, it seems that the car probably wouldn't see much with a lid, so if it was me I wouldn't waste my money. Plus, I thought that the Ws6 had "improved airflow". 






