Quote Originally Posted by 99PGPGT View Post
lol dont listen to him haha you cant damage it unless you nail a block of wood to the end of the throttle body
Bamboo is highly heat resistant and can be found in 3"... Hmm...

Did he give you any justification as to why it would damage the engine?

I've had 4 3800 Grand Prixs and all have had a cone intake of some sort, with no issues.

If you're worried about it, go for the K&N. It doesn't void factory warranties on vehicles that have them and it looks almost stock. Just remember to clean and oil it regularly.