[Perfectlap]

very true inexpensive cars can always benefit from proper tunning. For the simple fact that they were not engineered to be performance cars. Even my Miata which did acutally undergo a fair bit of testing for balance and handling can be transformed into a world class handling car with some aftermarket upgrades. But that's because the Miata stock is a cheap car with cheap components.

Porsche's are Porsche's. Significant improvements will be very very expensive.

but the author of the article is being far too general and inacurate at times.
A properly tuned car by profesional tuners will RARELY be slower than stock.
Will costs justify the enhancements? hard to say and depends on what you wish to accomplish.

and the author is wrong on another bit: Bigger Wheels don't always equal slower wheels.

I have stock 17" wheels and I'm mounting 18" wheels.
Its not the size that necessarily makes them slower but the weight.
The 18" carreras are 20-21 pounds 18" TT's are probably in the area of 29 pounds
and I'm sure my 17's were not far from the twists. Lighter is better and Lighter can mean bigger contrary to what the author claims. I'm always amazed at how wheel retailer rarely publish the wheel weights. Even when I called Wheelenhancement.com the sales rep had to look up the weights in a book! They weren't right there on his computer.

Its always best to consider upgrades after consulting with outfits that spend all day testing and tunning one particular car or group of cars. This week I spoke to someone at RUF NA in Texas and he talked my ear off about the Boxster. There are groups like RUF for every car and they do make the car better. The author of this edmunds article must have only dealt with ricers who had little knowledge or training.

Trying to improve the car's performance solo without input from the pros is a gamble.

By the way I sold a $3,000 Miata (retail dealer book value with mileage) for $7,000 because of the Mods, I bought the car for $5000 and drove the wheels off it.
Within the first five minutes of placing the internet add I had several phone calls and about 40 emails by the end of the week. Two guys literraly begged me sell them the car. 90% of the interested parties knew exactly what the upgrades were and how much they cost. With the internet enthusiasts have become very informed and know the value of a good deal. Also I never made performance mods unless it was time to replace a worn out part, why replace with OEM? better to upgrade.
p.s. I still get random emails asking if they will give the contact info of the new owner.

anyhoo with the Boxster I would limit upgrades to exterior mods. Things like Litronics, aero kits, hardtops, interior ugprades are very expensive and if you can find them cheap it will help your car when it comes time to sell.