Sunburst Drag Restrictions?

Hey guys, I have been wondering lately, I'm working on a project with the beamng cars, I recently switched to the sunburst and I dont see any reason that the car should be stopping at 160mph, I use prepped tracks and good tires, and the car is using a 90lb shot of nitrous, fuel consumption is good, whp is through the the roof, hitting around 5000whp and 7000hp, engine and other parts are all indestructible, but yet it still is only making 160mphs when it should be making 210mph+. I do not see the reason, I have no electronics in the car so that cant be a possibility of electronical restriction, help?
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Also, it feels like the nitrous isnt even doing much either

 

Gearing?

 

if your car is in 6th gear and is already on redline, that means your gearing for the trans is too low

 

3 ways to raise max speed assuming enough power:

1. Final drive gear ratio.
2. Transmission gear ratios.
3. Larger diameter wheels.

Ideally, you'll want to do all 3.

 

i told him that in private chat but he didnt understand that i think