Frequently Asked Questions: Hahn RaceCraft TurboSystems by Bill Hahn Jr.

What else will I have to buy?

NOTHING.  Hahn RaceCraft TurboSystems are complete installation packages, with all the needed components included.  We engineer each system for its application completely.  You need only provide your car and an auto mechanic for installation.  We've done all the hard work already.

Can I install it myself?

Yes, if you are a professional auto mechanic.  Our systems and their installation manuals are intentionally designed to be installed by an auto mechanic, and do not require a turbocharger or tuning expert.  We do not recommend that the average hobbyist attempt installation, however, unless he or she meets the above criteria.  No fabrication is required, and all the needed parts are included.  If you are in doubt as to whether you can install it yourself, you should probably consider an installation by a professional.

What if my installer or I need help?

No problem.  Contact your dealer.  Hahn RaceCraft chooses only dealers that can meet your technical needs. We are very picky about this!  These dealers have direct access to our Tech Staff.  If you purchased directly from Hahn RaceCraft, contact our Tech Department.

How long will a Hahn RaceCraft TurboSystem take to install?

About eight to ten hours for a non-intercooled system (varies with make and model).  Intercooled systems will take an hour or two more to install.

Will my stock engine hold up to the additional power of turbocharging?

Yes.  All Hahn RaceCraft systems are quite thoroughly tested for engine durability on our own in-house fleet of long-term evaluation vehicles.  We are quite careful to set up our systems at power levels that maintain long engine life.  And for those of you who need more, most Hahn RaceCraft systems stand ready to deliver even more power at higher boost on modified engines.  Just follow the guidelines we set for your particular system level.  Let Hahn RaceCraft engineering excellence take care of the rest!

Why do you use Mitsubishi turbos?  Why not Garrett?

Mitsubishi turbos employ the latest, most advanced turbocharger wheel and housing design available.  Period.  For the flow range they provide, no other turbocharger we have found can respond as quickly while also being able to provide the airflow required for high HP.  Mitsubishi achieved this through reducing the inertia required to spin their wheel assemblies. They achieved it by reshaping the wheels.  For their flow range, no other wheel is as small in diameter (radially).  This reduces the centrifugal inertia required to accelerate the wheel.  How do they make up for the small diameter?  The wheels are thick (axially).  Net result: big flow, quick response.  Add excellent efficiency through both low backpressure turbine sections and minimal heat added by the compressor, and you've got a winner.  We have used these units for years on 25 to 30 PSI boost, 450 HP per liter engines with a ZERO failure rate!  And when they do need freshening, it's easy, due to distributors located worldwide.  Nothing else in my twenty years of experience has even come close, and they don't need exotic ball bearings to do it! 

Why not an external wastegate?

No need.  The additional complexity and expense is simply not required on these applications.  We are able to achieve stable, consistent boost levels on these units with their internal actuator wastegates.  Different boost levels are available through the different actuators we offer.  And they all work wonderfully with boost controllers, electronic (preferred) or manual.  Other turbo makes MUST use external wastegates, either because they do not exist with effective internal wastegates or due to improper sizing. 

Do I need a front mount intercooler?

Unless you are ready to make over 400HP, our side mount intercoolers are optimal.  We save you the additional purchase expense, longer installation time and permanent, irreversible changes a front-mount may require.  You will also benefit from increased response due to the reduced intake volume a side mount intercooler presents.  We have used the same intercooler design for years on our 350+ HP factory TurboSystem upgrades.  It works!

What about compatibility with my car's stock engine electronics?

We investigate and correct any engine management electronics issues on each system before it is released to the public.  You should not encounter any problems.

Is the turbo always on? 

The turbo is only activated when you apply more throttle.  At cruising speeds, it does nothing to affect the car's drivability or mileage.

Will my fuel mileage suffer from the TurboSystem?

MPG will be directly relative to the usage the car sees.  If you can drive the car sedately enough to never achieve turbo boost, then the MPG will be the same as the car was with no TurboSystem.  Moderate use of the TurboSystem will affect overall mileage only slightly.  Our TurboSystems are designed to be fuel efficient, yet safe for your engine.  In many cases, customers report a five-to-ten percent fuel mileage increase.

What if my car already has an intake system and other modifications?

If you have already installed a header or air intake, these components will be replaced by components included in the TurboSystem. 

High flow cat-back exhaust systems are a good complement to the TurboSystem, as are enhanced ignition system components.  Internal engine modifications, such as cams, porting and compression changes, should be discussed with your installer.

Do I need a boost controller?

Boost controllers are not required, but are a nice addition if you wish to add versatility through multiple boost levels.  They can also improve turbo response time.

HOW DO I GET IN CONTACT WITH HAHN RACECRAFT?

Just click here!