Pre Dyno Check List

  
If you want to get the best out of a tuning session it is important to start with a solid base to work from. There are critical pre-tune checks that should be gone through prior to loading a car on to the dyno. These checks will save you time and money, and may even save your engine. It is important to read and understand this checklist before your car is brought for a dyno tune.



Fuel

It may seem simple enough, but your car needs to arrive with a full tank of fuel of whatever fuel you plan on running. If you want to run your car on 91 Octane pump fuel, the car needs to arrive with 91 Octane pump fuel. For tunes requiring a specialised fuel such as E85 or race gas, arrangements must be made for the fuel to be available for the tune.



Fuel System

It is important to ensure that your fuel system is up to the task of supplying the fuel required for your desired power levels. Fuel pump, lines, and injectors must all be carefully selected. It is sometimes discovered that your fuel system is not up to the task after the car has already been on the dyno for some time. This is not only a waste of time and money but can mean that much of the work done on the tune will need to be redone once the problem is resolved. Keep in mind, fuel system components can be rated in flywheel horsepower while a dyno reads wheel horsepower.
Even when the fuel system parts have been selected appropriately it is very common for a wiring problem to cause a voltage drop at the fuel pump. The fuses, relays, wiring, and connections must be up to the task of supplying the voltage and ground required for a constant voltage at the pump while at full load.



Tires

For operation on our rolling road a dyno it is important that the tires on your car be in good condition andset at standard pressures. If your car is going to be creating a high amount of power grippier tires are an asset such as drag radials to prevent issues with tire slip. Tires that are weather cracking, worn to the cords, or damaged in any way have the potential of blowing up on the dyno. This can cause damage to the dyno, the car, and could be a safety concern.



Spark Plugs

One of the common issues we run in to on the dyno is ignition misfires. The issue is commonly caused by worn out, inappropriately gapped or installed spark plugs. Fresh spark plugs of the appropriate heat range and gap for the modifications to your car is a must before a dyno tune. If your car is going to be running increased boost it is recommended to run a colder heat range spark plug with a tighter gap. Factory gaps will often have issues with spark blowout and factory plugs are often too hot for aggressive driving and/or increased cylinder pressures. Spark plugs should be torqued to spec, you would be surprised how many cars have been diagnosed for a misfire or rough running condition and it has been caused by aninappropriately installed spark plug!



Clutch

If a clutch is slipping on the road, it is most definitelyis going to slip on the dyno. A car cannot be tuned with a slipping clutch. It is important to make sure your clutch is ready for dyno time and the increased power levels you are expecting in order to prevent the tuning session being cut short.



Fluids

Oil should be high quality oil, fresh and clean, at the appropriate level.
Coolant should be at the appropriate level. (Coolant level needs to be correct in both the radiator and the overflow – only check when cool and not pressurised)
Cooling fans should be verified operational.
There should be no leaks.
Leaks cause a lot of mess that takes time (money) to clean up after the dyno session.
Leaks such as fuel or oil are serious fire hazards, especially when combined with hot exhaust and turbo components.



Boost control

Boost control is a critical aspect of tuning any turbo charged car. Boost control systems both OEM and aftermarket must be installed correctly. These systems come with specific instructions for port designations, electrical install, and plumbing. All hoses, restrictor pills, wastegate port(s), and solenoids must be installed correctly. Incorrect installation will result in excessive boost pressure or an inability to control boost properly. This can be potentially dangerous. If the tuner requests minimal boost, but the car runs maximum boost due to an error in the boost control system this can potentially cause engine damage. At best it will waste time diagnosing the boost control system’s improper operation.
Electrical and charging system
It is important that your battery is strong and your charging system is working properly. Low battery voltage, poor engine, chassis, and body harness grounds,  orimproper alternator operation can cause a host of issues. Best case is sensor problems or misfires and worse case scenario is problems flashing an ECU which can be potentially damaging.



Engine Health

It is a good idea to be aware of the health of your engine. A cylinder leakage test and a compression test could be performed on your engine. This will give you extra confidence in your motor while on the dyno, and it will make you aware of any issue with the motor before it is put to the test on the dyno and wasting dyno time which results in a diagnostic session. If you are requesting this service before your tune it is an excellent time to replace the spark plugs, as it would be at no extra labour cost.
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