What makes smoke come out of a hood?

Syringer

Lifer
Aug 2, 2001
19,333
2
71
Not in a bad way..but I've seen videos of heavily modded cars where they would do the burn out thing, and then have smoke release from their hood?
 

DnetMHZ

Diamond Member
Apr 10, 2001
9,826
1
81
I believe that is from bleeding off the nitrous system, or something to that effect.
 

K1052

Elite Member
Aug 21, 2003
49,130
39,305
136
Nitrous purge.

To clarify: This is done to get rid of any NO2 that has turned to gas.
 

TechnoKid

Diamond Member
Feb 12, 2001
5,575
0
0
Sometimes there is excess smoke left over from the burnout that gets trapped under the hood.