Dyno Tuning Pre-Checks
All supported vehicles
We have created this dyno tuning checklist as a guide for you to follow to ensure your engine and vehicle are in proper condition prior to your tuning session. The most common cause of unsatisfactory tuning results stems from mechanical issues that could have easily been found and corrected prior to the tune. You can go through each of the steps in this Dyno Tuning Checklist to identify and resolve common problem areas that can affect the tuning of your car.
Section 1: Mechanical Engine Health
Compression test prior to your tuning appointment (and a Cylinder Leakdown Test [CLT] if possible).
A Compression Leakdown Test (CLT)
Check for any engine oil, other lubrication, or fluid leaks. Be sure to use the proper turbo oil feed and return lines and that they are installed properly. Any oil/fluid leak will likely only get worse once the engine/drivetrain is warmed up while on the dyno. An engine's oil lubrication system must be properly sealed in order for dyno tuning to safely continue.
Section 2: MAF, Intake, Charge Pipe/Intercooler System, Turbo and Vacuum Line Integrity
Make sure your intake filter and MAF sensor have been properly cleaned and that the o-ring is sealing properly in the MAF housing. Cleaning your intake filter at regular intervals (according to the MFG's instructions) is always a good idea, especially before a dyno tuning session.
Vacuum, pressure, or smoke check all MAF housing, intake, charge pipe/intercooler, turbo, and vacuum lines.
Check the full exhaust system from leaks from the exhaust ports on the head to the tailpipe exit.
Check the BOV to make sure it is seated and sealing properly.
Section 3: General Pre-Tuning Maintenance Questions
Make sure all fluid levels are up to par; this includes engine oil, anti-freeze, transmission fluid, differential/transfer case fluid, brake fluid, clutch hydraulic fluid, etc.
Do you have a sufficient amount of the proper quality fuel in your tank? Make sure that you have the proper fuel octane and enough fuel to complete the tune.
Do you have any Check Engine Lights (CEL), Codes, or Malfunction Indicator Lamps (MIL) on?
How old is your fuel filter? Stock fuel filters usually work well, but when you are flowing much more fuel through them, they can clog much faster.
How old are your spark plugs?
Can your vehicle drive straight? Vehicle alignment and wheel balancing, the vehicle must be able to drive straight if it is to be tuned on a chassis dyno.
Can your vehicle drive onto the dyno safely under its own power? The vehicle must be streetable and the driveline and drivetrain systems must be intact and safe, if you have any clicking CV joints then repair them prior to the tuning appointment.
Can your vehicle stop properly in an emergency situation? Make sure you have appropriately functioning brakes on the vehicle that are suited for your power level, and that your tires have sufficient tread. We drive each vehicle we tune on the street after the dyno tune to verify proper operation. We should feel safe riding in your car after the tune.
How strong is your battery/alternator? Please make sure these items are strong and operating properly.
