Dyno Solutions
465 Federal Road
Brookfield, CT 06804

ph: 203-775-7982

Dyno FAQS

Many people are unsure what a dyno can offer.

Many myths still exist about dynos.

Contact us with any other questions you may have. 

Info@dyno-solutions.com

Q: What can a dyno show me?

A: Dyno Solutions will show you how important your bike's air/fuel ratio is as to how well it runs (ie: how rich or lean your bike is running). Of course, it will also show you how much horsepower and torque your bike develops and at what RPM.

Q: Why is the air/fuel ratio so important?

A: Your engine is essentially an "air pump". Ideal and theoretical numbers are derived for your bike for it to run its best. If your bike is running too lean or rich, you will be able to catch it early before your motor suffers catastrophic and costly motor damage.

Q: Will running a bike on a dyno damage my
     bike?

A: No. Running a bike (and tire) on a dyno is no harder on a bike than riding it on the road. If something is wrong with your bike, it is safer and easier to diagnose on the dyno.

Q: Will my bike overheat on the dyno?

A: No. Dyno Solutions boasts an extremely well force-ventilated space and high-powered fans to keep your bike cool. We also monitor your bike's engine temperature closely.

Q: How can a dyno session improve my       
     bike?

A: A diagnostic session of three "pulls", showing most importantly an air/fuel readout, will allow Dyno Solutions to show you critical areas in which to improve your power delivery.

Q: How does Dyno Solutions maximize the  
     fueling of a modern fuel-injected bike?

A: We specialize in building custom fuel maps for your bike using a "state of the art" Dynojet 250i dynamometer and latest fuel injection module (Power Commander III usb and Power Commander V) utilizing "Tuning Link" (computer automated correction) software. This combination offers you precise computer generated/corrected fuel metering (in real time) to produce smooth, linear engine performance.

We also support the latest Bazzaz products!

Q: Aren't dyno sessions for racers or those 
     who are horsepower-crazed?

 A: Not at all! While the dyno has gotten a bad rap in the past as strictly a horsepower measuring device, Dyno Solutions' "cutting- edge" load-cell air/fuel type dyno has become the ultimate tuning tool for all bikes to provide crisp throttle response and superb driveability.

Q: Can the Power Commander damage my  
     ECM/ECU?

A: The Power Commander is designed so that it cannot send current to the processor in the ECM/ECU, which makes it incapable of damaging the ECM/ECU.

Q: My Harley has a stage burn with all of the recommended Screamin Eagle components. Why would I need a Power Commander?

A stage burn is a recalibration for specific Screamin Eagle components. When used with these components, the cruise air/fuel ratio is about 15:1. However at 15:1, they can run hot, surge, ping and are more likely to blue pipes.
8With the Power Commander installed with the proper map, the air/fuel ratio at cruise will be about 13.8:1, the bike will run smoother, cooler, accelerate better, and be less likely to ping or blue the pipes.

Q: My dealer says that I can run any pipes I want to on my EFI Harley and the ECM will correct for it.

The Delphi System is very good at masking low speed rideability problems, however it cannot reshape the fuel curve for any modifications you may do. It may appear to run ok with different pipes and air-box, but when checking air/fuel ratios, you find that they are not optimum and in some cases dangerously lean. With the Power Commander and a proper map installed, the bikes run noticeably better, smoother, and cooler, with improved throttle response.

Q: My Harley dealer modified my Harley ECM with a stage burn, will I still benefit from the Power Commander?

Yes. The Stage burns are calibrations for specific Screamin Eagle components. If you run any other parts that can change the air flow through the engine (pipes, cams), you will not have the proper fuel curve.

Q: My Suzuki dealer adjusted my ECU with a YFMS “clicker box”. What is the advantage of a Power Commander over this?

A clicker box only has 3 adjustments, which is not nearly enough to build a proper fuel map; the Power Commander can have up to 260 different adjustments.
A clicker box can change the fuel curve up to 10%; the Power Commander can change the fuel up to 100%.
A clicker type box flashes the EPROM on the ECU which can make it difficult to return to stock; the Power Commander makes no permanent changes to the ECU and unplugging it, returns the fuel curve back to stock.

Q: Does the Power Commander interfere with the bikes ability to compensate for atmospheric conditions?

No. The Fuel Injection Systems found on today’s bikes do a good job of adjusting fuel for atmospheric conditions (air temperature, altitude, etc). The Power Commander does not interfere with this and the automatic compensation remains in effect.

Q: Will the Power Commander void my 
     warranty?

A: In most cases, in order for the manufacturer to deny warranty for a failed component, they must prove that the aftermarket part caused the component to fail. As the Power Commander cannot send current to the stock ECU, it is highly unlikely that it could damage the stock system in any way.

Q: My dealer says my warranty is void because      because I installed aftermarket parts on my
     bike. What can I do?

 A: Consumers have specific rights on any product they purchase.

SEMA (Specialty Equipment Market Association) helps protect these rights and has a web page with a list of what to do if your warranty is denied. For more information please visit:

www.sema.org/warranty

Crank hp vs Rear wheel hp.

Many people are confused between the two methods of reading hp.

Crank hp is what most manufacturers state in specifications. It is derived with a motor bolted directly to a dynamometer.

 Rear wheel hp (rwhp) is what most dynos read.

rwhp is lower than crank hp due to drivetrain loss from transmission gears, chains, tires and wheels.

Drivetrain loss usually is about 10-15% but can vary from bike to bike.

Dyno Solutions shows rear wheel horsepower.

Copyright Dyno Solutions LLC All rights reserved.

Dyno Solutions
465 Federal Road
Brookfield, CT 06804

ph: 203-775-7982