Tuning DOES NOT fix mechanical issues or misfires. Tuning is for vehicles that are already in good running condition. Tuning is for making aftermarket parts work properly together.
If you feel your car has any mechanical issues or is misfiring. Please contact us and we can schedule a time before your dyno tune to fix any problems it has. If we strap the car on the dyno and find misfires or other issues we will charge you the dyno rate of $225 an hour to repair the issues or remove the car from the dyno and reschedule your tune and charge you for the time on the dyno.
Fuel Related Pre Tune Checks
- Do you have the fuel octane you want to be tuned on in your tank? – It is critical you have the fuel you want to be tuned on in your fuel tank when you come in for the tune. We can only tune your car for the fuel that is in the fuel tank. If you tune on 93 octane you will make more hp but you can damage your engine if you boost with 91 or 92 octane in your vehicle. If you want to be able to run 91, 92, or 93 then you will want to tune your vehicle with 91 octane in it.
- Do you have nonoxygenated 91, a.k.a. no ethanol 91, ethanol-free 91 in your fuel tank? – We do NOT recommend running 91 non oxy or non ethanol fuel (see images below for examples). We have found turbocharged Subaru’s do not like this fuel and it acts like a much lower octane in real life testing. We will tune your car on that fuel and you will make substantially less hp. If you decide to come back with a better fuel you will have to pay for a tune adjustment (dyno hourly rate). If you only have access to 91 non oxy, we have found an aftermarket intercooler can help keep the power where it’s supposed to be.
- We have found that most Kwik trips in Minnesota have nonoxygenated 91 and the pump is not always labeled non oxy, so we recommend staying away from them for pump gas.
- Is your MAF (mass air flow) sensor dirty?– We recommend cleaning your MAF with MAF cleaner before your tune. If we tune your car with a dirty or bad MAF, if you ever decide to clean or replace it your tune will likely be off and you will need a new tune (we DO NOT recommend using aftermarket MAF sensors, even if it’s the same brand as the OEM they can read differently than stock and typically don’t last as long. Always buy OEM from the dealer)
- Does your front O2 sensor operate correctly?– If your front O2 sensor is not working we can NOT tune your car. (we DO NOT recommend using aftermarket O2 sensors, even if it’s the same brand as the OEM they can read differently than stock and typically don’t last as long. Always buy OEM from the dealer)
- Check or replace your fuel filter
- Check/set fuel pressure. (If you installed an aftermarket adjustable fuel pressure regulator you need to set it. All aftermarket fuel injectors are flow rated at 43.5psi. That is the recommended base pressure for you to use. Always set base pressure with a warm engine and the vacuum line disconnected from the fpr and plugged.)
- Stock Fuel Pressure from the Manufacture
- All turbo EJ Subarus- 41-46psi
- 2015-2021 WRX- 49-58psi
- BRZ/FRS/86- 51-72psi
- EVO X/Ralliart- 45-50psi
- EVO 8/9- 42-45psi
- For Single fuel tunes please come in with at least 1/4th tank of gas.
- For Dual Fuel/ Flex Fuel tunes please come in with at least 1/4th tank of gas but no more than half. No need to bring E85 as we supply it and the price is included in the flex fuel tune.