- May 10, 2006
- 60
- 0
- 0
]I was wondering if i put a fuel pressure regulator on my car and dropped the pressure down. Would it improve my mpgs? Can you drop it to low and harm anything? Oh and have you guys heard of buying gas at night or in the morning to save money and get more fuel? I don't understand how it all works? I thought gas expanded when it was cold.