Tips for buying hardware?

[MS]

Thing to consider: automatic gearbox effectively makes for a loss of up to fifteen units of horsepower, but if someone can afford a car with an automatic gearbox, they can probably also afford a version with enhanced engine, unless the model comes at narrow array of options. Another thing to consider, active air conditioning does affect the car dynamics, therefore, in case of horsepower shortage, it may come in handy to temporarily disable the air conditioning in case of overtaking.