Why the FOIL delete mod?

[stroker32]

Whats the deal with the foil delete mod.? what does it actually do and what does it actually gain you?

[Ryan Rønning]

Its really only to be an ascetic addition to your engine compartment and to make the whistle from your turbo more pronounced!

[2000 7.3 6speed]

Just makes the engine compartment look cleaner

[stroker32]

ok thanks guys. how much turbo whistle are we talking bout?

[stroker27]

not much, i couldnt tell the difference after i did mine

[Jake]

I could tell a difference. Normal cruising its pretty much the same. Once you hit about 12 pounds of boost is when it starts getting noticable.

[ross3031]

I noticed a good difference in whistle. As for it cleaning up the engine compartment, i lost my patience cleaning the insulation off so i just took my angle grinder to it. 10 minutes and it was off, just has a rough look to it now...

[colinmitchell111]

the whistle is definately more noticeable.. i didnt care about the looks.. a great free mod!

[panheadjay]

do some trucks come without it ? my 99 doesnt have it and it was a one owner, he said he said he only put transmisions in the truck.

[Jake]

Early 99s didn't have the foil. Though somehow the early 99 tubes that Nick bought had foil on the hot side.