Is it better to purchase all upgrades and limit engine, or vice versa?

  • Thread starter Thread starter malun
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malun

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For a 400 500 and 650 PP car for my b spec driver, is it better to purchase all engine and weight upgrades and then detune the engine and add weight to a ballast, or is it better to try to hit 400, 500, or 650 without having to detune?
I noticed horsepower is higher when i don't detune, but torque suffers, and the opposite happens when i do detune.
This also brings up the question of power and torque curves, are there any threads explaining the concept of torque and power curves, and limiting the engine to make the car go faster such as this thread below? I read the thread but dont understand the concept and by how much i should detune, when to detune, etc...
Thread:

http://www.ign.com/boards/threads/d...rves-in-the-game-make-a-difference.203204947/

Thanks for taking the time to look at this and possibly respond in advance. Also, i have read all the stickies and understand the basics of tuning suspension and transmission, but haven't found anything on this specific topic in my 10 minute scan.
 
malun
I noticed horsepower is higher when i don't detune, but torque suffers, and the opposite happens when i do detune.
Click to expand...

In my opinion "It Depends"

It depends on the track and the car. On a "HP" track like say.. La Sarthe or Nurburgring or the ovals, you will want more horsepower (tune up & limit the amount of engine limiting :D ). On a track where you are accelerating from low speeds, maybe Tsukuba.. I would sacrifice a little top end power for more torque (detune).

With a car that has a very peaky power curve, it may be beneficial to to detune a little.. even on a "HP" track. With a car that already has a relatively flat power curve.. don't detune.
 
When it comes to adding ballast weight or limiting power less is better. I usually try not to limit power more than 2.5% or add more than 15 kg of weight with ballast. So trying to build the car close to the p.p. spec and then slightly limiting the car to meet it will give the best performance.
 
Ok thanks for the replies, ill try tuning my cars about 6% up and then detuning for short, technical tracks since that seems to be the case, and ill leave it at stock hp for a bigger track.
 
Usually decreasing power and adding weight is better. However there are so many variables. With weight at least you can control where it goes after the fact to give your car better balance. Power is where it gets tricky. If your car is really far off the pp you are aiming for don't add too many more parts. Once you start to power limit the car the power band (look at the little graph) will start to go crazy. Usually a slope up than a huge drop almost straight down. Ideally you want to to be a nice smooth curve.
 
A car with enough parts added to reach a given PP level will always have more HP than one that is hugely reduced from a max tuned level. There is no substitute for HP in this game.
 
I usually buy two of the same car to run at differing pp levels, one with all upgrades and the other with minimal upgrades, this means I can usually run the car within 95% of its full power, removable upgrades like turbos come in very useful too.
 

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