A father of a drag-race victim has described how he's haunted by flashbacks of his teen daughter's fiery death.

It was also revealed the hoon driver Adem Arpaci initially lied to police about his involvement in the crash.

Harley Churchill, 19, and his 18-year-old passenger Ivana Clonaridis were killed when their speeding ute careened off the EJ Whitten bridge in Melbourne's west two years ago.

Adem Arpaci, 23, was found guilty of two counts of culpable driving causing death.

He baited an ice-affected Harley into a high-speed drag race in the moments before the teen lost control and drove off the bridge.

Ivana's father today told the court of his ongoing heartache in a victim impact statement: "I spend many nights alone at the crash site trying to understand why," Ignos Clonaridis said.

"She (Ivana) was too young to die. She had so many dreams, so many plans and they were gone in a split second.

"I will never be the same again. My happiness died that night with my baby girl," he said.

It was also revealed for the first time that Arpaci pleaded guilty to making a false statement to investigators in the days after the crash.

He told detectives he was in the area at the time but didn't witness the incident.

A day later he corrected the record, informing police that he was behind the wheel.

Family supported the former warehouse manager in court.

His defence saying if he could wind back the clock he would do it in a heartbeat.

Judge Frances Hogan asked families in the court room to control their very strong emotions. She said "every way you look at this case there is tragedy."

Arpaci will be sentenced on March 16 in the Victorian County Court.

© Nine Digital Pty Ltd 2018