Why are the horsepower readings different then real life?

For my specific case i only want to discuss the supra, because this is the car im trying to get a replicated one of to as close to real as possible.

So a 1997 Toyota Supra RZ has these stats below;

In game (with oil/engine rebuild...

You can't start a sentence with 'So' in that context.

More On-Topic: The horsepower varies in the game depending on all sorts of things. The same is actually true of road cars - not as much as GT5 (in well-maintained cars) but the disparities you note aren't surprising... and they aren't really game-breakers.
 
When you are doing an overhaul you are also doing an engine oil change.

Try this the opposite way (first overhaul, then oil change) and the game tells you the oil is in good condition (because it has been obviously changed during overhaul).

Gotcha 👍 but I was doing the redundant oil change first because I was trying to find what effect oil or overhaul was having on various km cars. Cheers.
 
Just like the SUPERCHARGED Shelby Series 1 has 319 HP which was be correct for the NA version, the S/C version has 420 HP.
 
Also remember that as many have said, every engine is different, and if the manufacturer said it had 300BHP, you dyno it the day you get it and it's 280BHP, it sounds like a bit of a lawsuit to me. Best for the manufacturers to say it has 270BHP to be sure.

PS - Am I the only person who can actually change the BHP/KW readouts?
 
So if you guys stop trying, and re-read his original post, he asks about the TORQUE difference. Who gives 0.02$ about 4hp difference.

you can get 4 horsepower from running higher octane or adding a CAI.

And as previously mentioned, engines do lose a lot over the years in terms of power and torque ratings. A 2005 mazda 3 GT 2.3L is rated at 156 on wiki, and by Mazda, but wheel horsepower is actually at 136.
 
I actually don't know. I've seen it for some cars in the game but for the most part, most of the cars in the game have the same readings as their real-life counterpart.

BTW, it's "than"
 
I kinda wish the only people to reply in this thread were those with actual real life experience because... i have seen 4 stock supras dyno'd and of the 3, were 272 , 262 (187k or so miles), and the highest was 275, which had 43k miles on it and was perfectly maintained... literately. Also non of the graphs had a torque reading of over 290... so where in gods name does PD get over 400 ft-lb of torque .... impossible. These were all on 87 octane also, but regardless, with race fuel the engine's torque reading didn't benefit nearly as much as the hp curve which was only up to about 330


and Before i even go into difference in engines.. a brand new supra after setting in the seals (stock with nothing touched) usually will top out at about 300hp to the wheels.
 
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