What is a chassis dynamometer? A chassis dynamometer is a treadmill for vehicles. When your car, truck, motorhome, etc., is driven on the dynamometer rollers. Road, track, terrain among various scenarios can be simulated:

• Low speed, high speed
• Normal level road
• Up hill, down hill
• Trailer loads

Why is dyno tuning better than “ordinary” tuning? You drive your car in gear and under load. You should get it tuned in gear and under load. This can only be done on a dynamometer.

Why is your Dynocom dynamometer better than other dynamometers?” Dynocom dynos enable us to accurately diagnose a host of problems. With our dynos, we can safely operate a vehicle under any load under the control of the dyno. No other dyno offers the accuracy, sensitivity, and vehicle safety of a Dynocom dynamometer.

Can you tune fuel mileage on the dyno? Yes, we can lean out the part throttle and cruise areas to net better mileage and actually save you money.

Why is road load testing better testing at rest? A vehicle in “neutral gear” at rest on the workshop floor does not behave as it would “under load” on road. It is quite possible for instance, for and engine to run rich at idle and just above idle, but be dangerously lean when cruising along the road. Spark plugs, injectors, fuel pressure, carbs, fuel pumps, electronic sensors, may be fine at idle or “free revving”, but perform poorly under load. So, these components can never be checked properly inside a workshop without a dynamometer. To road test a vehicle for a slipping clutch, a misfire, a flat-spot, or vibrating tail-shaft, takes time. A road test also introduces the prospect of an accident with your car. Our Dynocom dynamometer saves an enormous amount of valuable time, and complete isolation from traffic. This totally eliminates accident damage to your car. Because a calibrator can produce “hills”, “level road”, etc. at the flick of their fingers, much time is saved. Our Dynocom dynamometer saves you time and money.

Can my car be damaged on a dynamometer by putting on too much load? No. Assume a car is being driven on a level road at say 55 MPH in fourth gear. The car comes to a hill (more load), the driver does not move the accelerator. What happens? The car simply slows down. If the hill becomes steeper (even more load) and accelerator remains constant, the car slows down more. The situation on the dynamometer is the same. If your car is driving on a Dyno Dynamics dynamometer and load is increased, the car will simply slow down. Apply more load, and it will slow down more. The load the Dynamometer applies cannot stress the engine any more, (or any less) than a hill.

Does running my vehicle on a Dynamometer wear out my tires? No. Tires wear out when ever they are being driven on the road or on a dynamometer. Our Dynocom dynamometer has advanced design. In particular the roller surface is knurled with a square cut knurl. This knurl combined with specially designed Dynocom Traction Control System provides excellent grip and no excessive tire wear common on other dynamometers.

Can the dyno check my speedometer? Yes. Our Dynocom dynamometer can check speedometers. We can also check your odometer accuracy as well if you like.

Can I test to see if my new high performance part actually made more power? Yes, absolutely you can make a baseline pull in the stock configuration and then return at a later time with you new part installed and see what kind of gain you actually made.

My car already runs well, why would I want to have you dyno tune my car? There is a lot of power in small things like timing and spark. Sometimes small things like timing can net 30 horsepower.

Things to know before Dyno Tuning

  • Timing set at 10-degrees BTC (SPOUT out) for Ford EFI vehicles
  • TDC verified, particularly if balancer has been removed/replaced
  • Fuel pressure set to 39.5 psi (vacuum off) for EFI vehicles
  • For blown cars, new copper spark plugs properly gapped .025 – .035 and installed
  • Make sure that FRP(Fuel Pressure Regulator) or FRP sensor is connected to the boost side of the blower on blown applications
  • Make sure all spark plug wires are good, including coil wire
  • Make sure PCM and its diagnostic ports (including OBDII) are functioning properly
  • Make sure all the tires are in good condition
  • Make sure all belts, hoses and the cooling system are in good condition and up to the task
  • Oil, coolant and other leaks should be fixed prior to arriving; badly smoking cars should be repaired before arriving
  • For blown cars, be prepared to disconnect the FMU(Fuel Management Units) have vacuum line plug/cap available
  • For blown cars, if no FMU is used the injectors and fuel system, pump, lines ect. must be sized properly for the power level expected: Major engine damage could result.
  • For blown cars, the ACT must be placed after the blower (not before like on ’94 & up vehicles)
  • For blown cars with returnless fuel systems, it is must to use a 2003 Mustang Cobra fuel tank and pumps. Normal EFI pumps will not work on a returnless system
  • Cars with returnless systems cannot be properly tuned if using a ‘wet’ nitrous system
  • Exhaust leaks will dramatically affect the air/fuel measurements taken. If possible, repair any/all leaks prior to your appointment. We may not be able to provide meaningful air/fuel results for vehicles with significant leaks.
  • Make sure that an O2 exhaust bung is welded in your exhaust at/near the header collector on drivers side of the vehicle. This is the only way we do our tuning. We can provide you with a bung & cap FREE of charge with any tuning package.