Originally posted by ThorSanchez Yea, I forgot Volvo. They do make some interesting vehicles. I love that Polestar wagon. And aren't they going heavily into electrics? That might be a wild ride - some kind of high performance Polestar electric wagon.
I don't know anything about Volvo's plans for electric vehicles. But you know, for at least the past few decades, Volvo has leaned toward its wagons as its performance vehicles. For example, I owned an '87 740 Turbo wagon that had the four-speed with overdrive tranny plus a limited slip differential. Supposedly neither of these features were available for that model year's wagons -- at least US spec -- which has led me to suspect my wagon had been a special order or maybe even an import. I loved that old wagon. I'd turned it into a hotrod and having that limited slip diff was a hoot. I'd upped the boost to about 15 psi and I could break loose both rear wheels in 2nd. There were later models that were pretty incredible -- like the 850R. That was one hot wagon.
I don't know how much boost these new Volvos are running, but increasing the boost is drop-dead simple. And with modern, sophisticated EFI systems, they'll probably be able to handle moderate increases easily. Even my '87's EFI system was able to handle an increase in 7 psi, which is a significant amount -- equivalent to about a 50 hp gain. If you combine that with a late model exhaust manifold, a cam, and a high-flow exhaust system, you can probably come close to doubling that figure. There are various other tricks one can use to get more performance out of a charge-air system. It just depends on how far you want to go and how much you want to spend.