EVO Intake discussion I had with a mechanic.

[Dragonwind]

I just wanted to make an observation I had with another mechanic. I was talking about headers and he saw that I have mentioned I had an EVO intake. He was saying I should put the stock one back in as soon as possible to prevent further damage to the engine. When I asked why it was because of the vast amounts of hot air. This would make sense but the EVO came with a shroud to block it off from the engine bay and I went a set further and sealed all the gaps less a tiny drain hole for water.

Now I've been running with this in the car for a year and a half with no issues but that got me wondering if anyone here has real data on if these make a difference or really do more harm than good. My old box was damaged so that was the main reason I replaced it. A used factory box is cheap so I can always go back if they really aren't that good.

Thanks
Chris