Pre-Tune Checklist

PRE-TUNE CHECKLIST

This is an example of things we check up on when doing a pre-tune inspection. Please ensure that your car is in good running order before your appointment to avoid additional shop time or a missed appointment. InFront will gladly take care of any of these factors that may need attention before tune.


BUILD

× Is the project finished?
× Are the injectors adequate for the intended power? Is the fuel pump? Do you need a surge tank? Do you need fuel dampers?
× Are the boost couplers of sufficient quality and tightness?
× Is the intercooler going to supply enough cooling for the intended power?
× Are the sensors appropriate for the intended tuning method? (SD?)
× Is age a factor in any components in use? i.e. tired MAF sensor.
× External wastegates routed properly? (dual line off boost reference)
× Model specific issues? (e.g. 08+ STi stumble / fuel pressure regulator / dampers)

BODY & CHASSIS CLEARANCE

× Ensure at least 2.5″ of ground clearance to fit on dyno without the potential for damage to your vehicle.
× Proper wheel alignment

WHEELS & TIRES

× Proper condition and inflation, torqued to proper specification.
× No studded tires.

FLUIDS

× Engine oil has been recently serviced, others checked and topped off as required.

FUEL

× Ensure adequate fuel of the type you desire is provided in the tank. A fee will incur if we have to get fuel for you.
× If a fuel pump install is to be done before your tune, please have no more than 2/3 of a tank.

SPARK PLUGS

× Ensure the proper change interval is met or exceeded.
× We suggest the use of colder plugs on all EJ motors seeing stage 2 and up.

INTERIOR

× The front two seats must be clear and easy to move about.
× A working 12V power outlet is ideal.
× Free of trash, spills and excess personal items is greatly appreciated.

EXHAUST SYSTEMS

× Secure and free of leaks, O2 bung for wideband logging located 12-30 inches post-turbo.
× EGT bungs (if in use) provided as close to the cylinder head and as evenly cyl-to-cyl as possible.

INTAKE SYSTEMS

× Free of leaks, cleaned or fresh air filter, vacuum system/hoses routed properly.

UNDER-CAR

× Brakes in proper working order, free of leaks, adequate and safe friction material life, no excessive wobble or warp, chassis and axles free of obvious or potential damage or wear.

ECU / ECM / WIRING

× Ensure the proper cables are provided, that the system is in good working order and can openly communicate.
× If an AccessPort is to be used ensure it is up to date and functioning properly.
× The ECM is mounted in an appropriate location and securely.
× Ensure the wiring harness is routed properly; is properly shielded and grounded. ECM connections and pins are secure and corrosion free.

OBDII PORT

× Ensure the port is accessible and in good condition. These connections can become ‘loose’ and need service for example if an AccessPort cable is left in all the time and kicked repeatedly.

FLEX FUEL / E85

× Generally, if we are to perform a flex tune, we tune the pump-gas side first, then e85. You will drive in with 1/4 to 1/2 tank of pump-gas (depending on your vehicle) and 10-15 gallons of e85 in containers. We will tune gas, then pump out as much as we can of what is left into containers, refill the car with e85 and tune on the resulting mix of e70 to e85. You will typically leave running on that ethanol mix with extra fuel in your containers.

POWER ADDERS

× Ensure there is an adequate supply of methanol, nitrous or water mix for your tune. Or bring extra.

BOOST CONTROL

× Is the proper system in place for the desired results:

TIMES YOU NEED A BOOST CONTROL SOLENOID

× Any 2002-2005 2.0L US WRX.
As your car gets older the stock system gets gunky and will slowly lower available boost until only waste-gate pressure is achievable. Just replace it.
× Any time the stock turbo is replaced with a not stock unit… e.g. A vf39 on a 2006 WRX, or an FP Blue on an STI.
× Any time you have an external waste-gate.