[QUOTE=AskNott]
I didn’t say “nothing out there can beat a recent model Corvette.” I’m saying it’s unlikely that any street legal four banger can. There are faster, better handling cars in production, but none of them have four cylinders.
[/quote]
Street legal does not equal ‘stock’. Those 700 HP Supras are fully street legal.
The thing about the small forced induction engines is that they are very strong and can handle a lot of boost. This means that they are incredibly cheap and easy to modify to produce dramatic horsepower gains. You can sometimes gain 30-40 horsepower with nothing more than a reflash of the engine computer software.
For example, have a look at the dyno chart on this page.
A stock WRX showed 195 horsepower at the rear wheels, and 231 ft/lbs of torque.
Changing the air filter and putting a 3" turbo-back on the engine, along with a reflash, increased it to 231 WHP and 302 lb/ft of torque. The engine itself is pretty much untouched.
Adding a cold air intake and uppipe, along with a new ECU reflash bumps the power to 242 horsepower at the rear wheels and 342 lb/ft of torque.
That’s 50 more horsepower and over 100 more lb/ft of torque by just playing around with the plumbing on the engine and changing the ECU programming.
A stock WRX already runs 0-60 in under 6 seconds. $2000 worth of add-ons will drop it under 5 seconds.
If you spend $5,000, you can do things like put on a bigger turbo, different injectors, high capacity fuel pump, and push these little 2-liter engines up into the 450+ HP range. The thing about the 2L boxer engine in the WRX is that the block is really strong and will absorb the power. So until you get into really exotic horsepower territory you don’t have to crack open the engine at all.
I’ve had both kinds of cars - a 400+ horsepower Camaro muscle car, and a Saab 9-2x (rebadged WRX). The Camaro was a hoot to punch off the line - the sound of that small block V8 and the rush of all that torque was great fun. But my 227 HP Saab with the 2L engine would eat that car if we did a cross-country run on average roads with a reasonable number of turns.
The Saab/WRX has a long-throw suspension that eats potholes and surface irregularities while still allowing the car to track and keep its grip. The Camaro had super-hard suspension, and little bumps would throw it off line and make it somewhat scary to drive fast in the twisties. And that big torque rear wheel drive was all too ready to let go and cause the car to want to swap ends if I hit a bump while using power to accelerate out of a curve. I feel much more comfortable driving the Saab fast than I did the Camaro.
Not ‘wildly hopped up’. We’re talking about a WRX with a stock suspension, stock transmission, stock engine, but with some induction changes and an ECU reflash putting out 400 HP, running 0-60 in under 4 seconds (AWD traction helps tremendously here), and having a suspension that’s really designed for the street and poor roads, vs a car with a suspension designed for the track. Oh, and the WRX might be 500 lbs lighter, and the boxer engine sits low in the frame giving the car a low center of gravity.
I used to be a skeptic of these little 4-banger engines. No more. I’ve seen what they can do. Put them in a small all-wheel-drive car, and you’ve got hell on wheels.