I ran a "sneaky pete" nitrous kit on a 61 Rambler American flathead 6. I installed it on a 72 degree day and took it for a test drive...hit the button and it certainly improved! Took it down to the HAMB drags ['03] and it was 105 degrees. Had a grudge race against Hollywood Tuck's 65 rambler and when I hit the button if coughed all over itself...ran terrible!