Need a Tune?

5250 High Performance Dyno Shop Blog

Mike Wiener

Recent Posts

Building Turbo Power | Do it right, make big power with Compound Turbos

[fa icon="calendar'] Feb 21, 2019 6:00:00 AM / by Mike Wiener posted in Building Horsepower, compound turbos

[fa icon="comment"] 49 Comments

In the search for more power, everyone wants low end torque and big HP. But when it comes to turbo motors, there is always a trade off.

A smaller turbo will make big low end torque, but fall off in power as the revs climb. A larger turbo will make big power numbers at redline, but is slow to spool and torque suffers.

  • If you want smooth power that keeps on building, read on...
Read More [fa icon="long-arrow-right"]

Subaru Transmissions | Smooth Shifting is an art, Learn it.

[fa icon="calendar'] Feb 15, 2019 7:30:00 AM / by Mike Wiener posted in Subaru Transmission Problems

[fa icon="comment"] 0 Comments

Subaru Transmission Problems | When it comes to fluids for your vehicle, enthusiasts can become very divided.

Everyone will have their go-to brand and type and you can't convince them anything else could be better. There are so many options for fluids, there is no way you could ever try them all.

One very important thing to remember when trying fluids is which ones you mix together. Most oils can be mixed with little to no detrimental effects, but this doesn't mean all.

Read More [fa icon="long-arrow-right"]

Supercharger Upgrades | Getting better with age

[fa icon="calendar'] Dec 14, 2018 8:30:00 AM / by Mike Wiener posted in Superchargers, procharger

[fa icon="comment"] 0 Comments

Power Upgrades | Superchargers have been around for a long time.

They were conceived in the mid 1800's as combustion engines were just starting to prove worthy.

Read More [fa icon="long-arrow-right"]

Winter Tires for High Performance cars | Denver Colorado Shop

[fa icon="calendar'] Nov 16, 2018 7:00:00 AM / by Mike Wiener posted in winter tires

[fa icon="comment"] 0 Comments

High Performance Shop in Denver Colorado | It doesn't matter if you have rear wheel drive, front wheel drive, four wheel drive or all the drives, if you have the wrong tires, there is little reason to expect traction in snow / ice conditions.

The tires are what touch the road and no amount of engineering can change that. If you don't have the proper tires for the task at hand, you won't be able to do what you want to do.

Read More [fa icon="long-arrow-right"]

Titanium or Stainless for your Performance Street Car | Exhaust Systems

[fa icon="calendar'] Nov 9, 2018 7:00:00 AM / by Mike Wiener posted in Fabrication Welding, exhaust systems

[fa icon="comment"] 2 Comments

There comes a time when you have to decide how much race car you want in your street performance car.

You can jump into a street car that has been parked overnight, start it up, and drive away. A real race car is going to need at least a few minutes of "pre-flight checks" before you can drive off. 

Read More [fa icon="long-arrow-right"]

Penske Shocks | Improving handling performance for street and race cars

[fa icon="calendar'] Oct 2, 2018 7:30:49 PM / by Mike Wiener posted in Penske Shocks

[fa icon="comment"] 0 Comments

At 5250 Performance, we split our time between two major customer groups. Street Performance and Race Cars.

The majority of our customers have street cars that we modify for power, handling and braking. For many of these customers, the look is just as important as the performance.

Read More [fa icon="long-arrow-right"]

Subaru Firewall Repair done right | Knowing the right way to get back to your performance standards

[fa icon="calendar'] Sep 12, 2018 7:00:00 AM / by Mike Wiener posted in Subaru Firewall Clutch Pedal Repair, High Performance Shop

[fa icon="comment"] 0 Comments

Broken or damaged welds on the firewall of some Subaru models is a topic we have discussed many times before.

Getting it repaired correctly so that you don’t have to worry about it coming back isn’t as easy as some shops claim. Not all firewall repair techniques are the same.

Read More [fa icon="long-arrow-right"]

Dirty Valves | Colorado Direct Injection Cleaning Services

[fa icon="calendar'] Aug 28, 2018 7:00:00 AM / by Mike Wiener posted in Walnut Blasting

[fa icon="comment"] 8 Comments

Walnut Blasting | Having your engine ports cleaned is now available at our Colorado Performance Shop

As manufacturers try to find new ways to increase power and fuel economy, they develop new engine technologies. One technology we are seeing in more and more vehicles is direct injection.

Read More [fa icon="long-arrow-right"]

Choosing a Larger Turbo for more Power w/o losing reliability

[fa icon="calendar'] Jul 10, 2018 8:00:00 AM / by Mike Wiener posted in Subaru Horsepower

[fa icon="comment"] 0 Comments

When you have a turbocharged engine, most manufacturers only use 80% of the full capability of the turbo.

They do this to make the engine more reliable and last longer. But this is something an enthusiast has to put aside, whether they realize it or not.

Read More [fa icon="long-arrow-right"]

More power, more responsibility | Performance Wheel Studs

[fa icon="calendar'] Jun 12, 2018 8:00:00 AM / by Mike Wiener posted in High Performance Shop, Brake Upgrades

[fa icon="comment"] 2 Comments

Stronger Wheel Studs | As we turn the power up on a vehicle, added stress affects almost every component of your vehicle.

To prevent premature failures, we often use stronger hardware made with stronger materials than the stock parts. A very common example of this are the bolts used to attach the engine head to the block. Not only ares these studs 3-6 times stronger than the stock bolts, they are reusable.

A part that is often overlooked when it comes time to strengthen things up, are wheel studs. In fact, most people never even think of the part until a lug nut get’s seized or a stud breaks off while changing wheels.

Wheels studs are probably one of the most imports pieces of hardware on your vehicle. They attach the wheels to the car and hold the brake rotors in place. If the wheel studs fail, the wheel falls off and may cause a major accident.

Read More [fa icon="long-arrow-right"]