Here are a few frequently asked questions from our customers.  If you have a question, let us know.  

Frequently Asked Questions

What kind of dyno do you have?

At West Bend Dyno, we have a Mustang MD 500 Eddy Current Chassis Dyno.

What is an Eddy Current Dyno?

Eddy current dynamometers use an electromagnetic brake to apply variable loading to the test vehicle. An eddy current power absorber (PAU) is a frictionless, air-cooled device controlled entirely by electric current. A torque arm extending perpendicular to the PAU and attached to a load cell provides for precise real-time torque data feedback. Eddy current PAUs provide the extremely fast response times required for precise vehicle simulations. Mustang Dynamometer has the most sophisticated closed-loop controllers in the industry and has perfected the art and science of dynamic vehicle loading and dynamometer control. Mustang’s PowerDyne Software comes complete with every type of test that a performance application could ever possibly require for tuning and power product development. Steady state testing allows for real-time RPM specific tuning – truly a benefit to professionals who make a living out of dialing in vehicle performance.

Can we tune our own car?

Yes, you can!  We will run the dyno and even give you pointers if you want them!

Can we drive our own car on the dyno?

No. Unless otherwise specified.

Can I wait while you tune my car?

The procedure would be to make an appointment, drop your car off and we will notify you when it is ready to be picked up.

What is horsepower?

The ability to do work in a given amount of time.

What is torque?

A measure of turning force on an object.

What is an air fuel ratio?

The amount of air and fuel measured in lbs which is being burnt in the combustion chamber.

What is ignition timing?

Ignition timing is when the spark plug fires in relation to the position of the piston and is measured in degrees before top dead center.

What does it mean to advance ignition timing?

To advance ignition timing, means to increase the amount of time that the plug fires before it reaches top dead center.

What does it mean to retard ignition timing?

To retard ignition timing, means to decrease the amount of time the spark plug fires before it reaches top dead center.

What does a colder spark plug mean?

The spark plug will dissipate heat quicker.

Why do I need a colder spark plug?

This would be needed for a boosted application, because when cylinder pressure increases so does heat in the cylinder.  Thus, too hot of a spark plug can retain heat and ignite the air fuel mixture at an undesired time and cause preignition.

What should I gap my spark plugs to?

Stock setting for a stock or near stock engin.  High performance street engines .030, high compression race engines 13:1 or higher compression .022, and nitrous engines .022 on average.

Why do you need to retard timing for a boosted application?

With higher cylinder pressures, the air fuel mixture is denser and the flame front travels faster in a dense mixture.  You need to reduce ignition lead to maintain the correct timing.

Why do I need higher octane fuel when I raise my compression ratio?

Higher octane fuel burns slower and resists detonation better.  With high cylinder pressure and heat, a low octane fuel can detonate before the spark plug fires.

Do you have a question for our experts?  Ask us!