Acura nsx 17' will not reach 400+ with any engine whiles others builds do

Product: Need for Speed Heat
Platform:Sony Playstation 4
Summarize your bug Acura nsx 17' is unable to achive 400+
What car were you using? Acura max 17'
Was the car your own build or downloaded from the in-game community? Personal Build
What was the last event you played? Sonic
Was it a day or a night event? Day Event
How often does the bug occur? Every time (100%)
Steps: How can we find the bug ourselves? Use the acura nsx with any engine
What happens when the bug occurs? The car doesnt achive it's full potential in stats
What do you expect to see? A 400+ car

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I have tried all the engines and not a single one will allow me to fully upgrade the car.