Cobalt 2.0 Performance

The Hahn S20G Cobalt TurboSystem is HERE!

For 2005-2007 Cobalt SS 2.0*

Replace that supercharger with a Hahn TurboSystem!

See exciting Cobalt 2.0's with Hahn RaceCraft TurboSystems and Components!

*: can also fit 2.2 and 2.4 with some modification

You always knew your Cobalt could do so much more. Sure, the stock supercharger setup is fun, but it's just not very effective for anything over 250 WHP. You've heard the horror stories of blown engines and terrifying inlet air temperatures on supercharged Cobalts that have been turned up, and it's kept you from getting busy with yours. But all along you knew there had to be a better way. Why, those Evo and SRT and Subaru guys get away with it...300, 350, 400 WHP...and on stock engines too!

Of course, the big difference is this...those other cars are Turbocharged.

Enter Hahn RaceCraft. Noted for 20 years of turbocharging excellence, and boasting considerable experience with turbocharged Ecotecs since 2002, Hahn has now designed a TurboSystem for your 2.0 that sheds the shackles of the stock supercharger and lets your LSJ Ecotec finally run with the big dogs!

Available in separate Component Groups, or five levels of completion, this new TurboSystem picks up where the factory supercharger leaves off. Capable of as much as 600 HP with optional GT35R turbo and PortFueler, this system gives you the tools to finally take charge. It's a completely engineered and exhaustively tested set of components, designed and tuned with great care by our very own Bill Hahn Jr.

The stock supercharger system was never intended for much more than 250 HP. Trying to make it do anything more will result in outrageous inlet air temperatures of 250 degrees or more with 2.6" pulleys that not only don't make healthy power, they force the supercharger come on even harder, which just aggravates tirespin in lower gears. With the Hahn TurboSystem, inlet air temps are typically less than 100 degrees, and the smooth power delivery makes the car MUCH easier to manage in lower gears...plus, you can multi-stage the boost (optional) for even more control!

Enjoy the following advantages with Hahn:

More power than any supercharger, including expensive upgrades, can ever make
No more belt drive hassles
Greatly reduced inlet air temperatures
Outstanding engine durability as compared to stock supercharger
The ability to change boost and power levels with the flick of a switch from the driver's seat (with Boost Controller option)
Increased fuel mileage
Reduced torque steer from a more controllable, less violent power curve
Reduced wheel spin in lower gears
Ability to upgrade easily to higher power levels
Recoup a portion of your cost by selling your entire supercharger system

That's right...the Hahn TurboSystem features our innovative StreetRace Intake Manifold. This piece of aluminum artwork enables you to remove the entire supercharger, intake manifold, belt drive, even the intercooler core, pump and hoses...and sell them to another Ecotec enthusiast to help defray your system cost. But that's not the only advantage...advanced high-power testing has proved that the StreetRace manifold significantly improves high-RPM horsepower, while also eliminating the uneven airflow that the restrictive, cramped stock manifold is notorious for. As if all that wasn't enough, the StreetRace manifold also adds a very trick touch to your underhood appearance!

This system features nothing but the best, from the standard StreetRace Manifold to the very proven S20G turbo, 3" band clamp downpipe system, big charge air tubing and humongous intercooler...all premium components designed to optimize a premium engine. And with the optional PortFueler, you can increase the output from the standard 360 WHP to over 400 WHP, for true 11 second 1/4 mile potential!*

Hahn RaceCraft has been studying and refining Ecotec performance for years, and a considerable amount of Cobalt-specific development has now resulted in the finest TurboSystem available for 2.0 Cobalt. If you've been thinking about 'going turbo', you could not pick a better partner. Let us show you how to unlock the true potential in your LSJ Cobalt!

* Higher than 93 octane fuel required for outputs above 360 WHP

In this dyno graph, we see a 3rd gear pull at 15 PSI boost, with 93 octane pump gas. The torque curve is nothing short of amazing...astoundingly flat and strong all the way through! The HP curve passes the torque curve at a very rewarding 5900 RPM on its way to a 320 WHP peak (that's about 376 engine HP!). Very effective performance for the LSJ 2.0 Ecotec, and at moderate boost pressure.

Now things are getting interesting! With a Boost Controller, we increase the boost to 22 PSI on 93 octane, and the WHP increases to 360, with a large jump in torque as well. This is serious power, enough to take a Cobalt into the low 12 second zone at nearly 120 MPH in the 1/4 mile! With almost 425 engine HP on tap, the LSJ engine can finally see its true potential, no longer limited by the stock supercharger system.