Please only fill out this form if you have a tune scheduled or have purchased a base map!
Please answer all of these questions to the best of your knowledge so the process of tuning your car goes as smoothly as possible and you get the most for your money. This is designed to benefit you so this process is as smooth as possible and that you do not show up with a car that cannot be tuned or does not meet your goals.
We will be taking your car to speeds in excess of 100 mph on the dyno. If you are not comfortable taking your car up to 100 mph then it is not ready to be dyno tuned. If your car vibrates or pulls to one side at high speeds we can not tune it.
Car Information
Year
Manufacturer
Model
Transmission type (required) AUTOMANUAL
If your transmission is NOT the stock transmission for this car, please list the year and model of the car the donor transmission is from:
A Cobb Accessport is Required for tuning All - 2015+ WRX and 2014+ FXT
Do you have a V2 or V3 AccessPort or no AccessPort? (If yes please list the model. Not sure which Accessport you have? Click here):
Stock Downpipe/J-Pipe or Brand (A GESi cat is needed to not throw the P0420 code. If you are catless or have any other cat than the GESi you will likely throw a P0420. We can no longer disable that code on an Accessport)
Stock Up-Pipe or Brand/ External Wastegate
If you have an EWG, please list the spring pressure
If you have an EWG, would you like there to be flutter or no flutter (ie. when the wastegate opens, do you want the exhaust to have a smooth sound or do you want it to have a fluctuation in sound.)
Stock Header or Brand
Stock Catback / Axleback or Brand
Stock Air Intake or Brand(This question is about your air intake where the air filter and MAF are located. This question is not about a aftermarket intake manifold. If you have a aftermarket intake manifold you can list that in the "Other Mods" section below.)
Stock Intercooler or Brand
Stock Turbo or Brand
Stock Fuel Injectors or Brand
Flex Fuel Kit / Gauge Brand (if applicable)
Fuel Pressure Sensor Brand (if applicable)
Stock Fuel Pressure Regulator or Brand (On 2008-2021 STI running aftermarket injectors we require a Cobb or other aftermarket fuel pressure regulator. The stock regulator is known to cause the 2800 rpm stumble that can't be tuned out.)
If adjustable aftermarket FPR, what is the PSI base pressure Recommended fuel pressure is 43.5psi. When setting or checking fuel pressure always make sure the engine is warm and you have the vacuum hose disconnected form the fuel pressure regulator.
Stock in tank Fuel Pump or Brand (Size)
Stock High Pressure Fuel Pump (HPFP) or brand (Size) (Applies only to 2015+ WRX)
If aftermarket fuel pump, is it hardwired?A hardwired fuel pump has additional wires and relay installed that go directly to the battery. If your fuel pump is getting power from the OEM connector is it not hardwired.
Stock Bypass / Blow Off Valve or brand
Stock Boost Controller or brand
2nd restrictor pill removed? (applies only to 2015+ WRX if running the stock boost controller with aftermarket downpipe, instructions of how to remove the 2nd restrictor pill can be found here.)
Stock Manifold Absolute Pressure (MAP) sensor brand (size) (for 2002-2014 WRX/ 2004-2007 an upgraded MAP sensor is required to run above 22psi.) (For 2008-2021 STI an upgraded MAP sensor is required to run above 26psi)
Stock Intake Air Temp (IAT) sensor or brand (An aftermarket IAT like GM or AEM is required to run Hybrid or full speed density on all EJ cars.)
Stock Engine or Built
If you have a built engine, please list any known part specs/brands
Stock Heads or Built
If you have a built heads, please list any known part specs/brands
TGV/Air pump/EGR deletes? If so, please list (if any of these are removed we are no longer able to shut the codes on with a Cobb Accessport. The TGV and EGR codes both put the car in limp mode and can't be on to be tuned and will not make full power if they are on.)
Do you have any other modifications? If so, please list
A note on fuels: Make sure you have the fuel you want to be tuned on in your vehicle 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.. When you come in for the tune please have at least 1/2 a tank for single fuel tunes. For dual/ flex fuel please have at least 1/2 but no more the 3/4 tank of fuel. We provide E85 included in the cost of the tune so no need to bring your own.
What kind of fuel is currently in your car? (91 non oxy, 91, 92, 93, E60, E85, or other)
What fuel are we tuning on? (91 non oxy, 91, 92, 93, E60, E85, Flex Fuel, or dual tunes)
Do you currently have or have had any Check Engine Lights? (We CANNOT tune a car if it has a check engine light due to any mechanical problems, if you currently don’t have any codes but get a code after the car is running on the new base map we provided, please update us with what codes you have. Your car should NOT have any check engine lights when you come in for the tune.
We can no longer disable check engine lights with the Cobb Accessport.
Examples:
Front O2 Sensor - P0030, P0031, P0032, P0131, P0132, P0134
System too lean/rich - P0171, P0172, P2096, P2097
TGV stuck closed but not deleted - P2004-P2022
Speed Sensor code causing limp mode - P0500
AVCS codes, Cam/Crank Correlation, Cam Over Advance - P000A, P000B, P000C, P000D, P0011, P0014, P0016, P0017, P0018, P0019 P0021, P0024
Air pump - P2431, P2432, P2433
Again if you have any of the codes listed above we can NOT tune your car.
Would you like oil pressure monitored on the dyno before/during tuning? ($50 charge. Highly recommended if you have over 150,000 miles, unsure about engine health or have a 2013-14 WRX/STI.) Our dyno can have multiple parameters it is monitoring at once. We are always monitoring air/fuel ratio, boost, fuel pressure, Ethanol content and RPM. This will have a live readout on the Dyno TV while we are tuning. For $50 extra we can hook up the oil pressure sensor into a galley below the alternator and monitor oil pressure before/during tuning. Monitoring oil pressure allows us to check the health of your engine by confirming it has adequate oil pressure before and during the tuning process. We have seen engines that run perfectly fine but have low oil pressure due to many possible reasons. Doing pulls with low oil pressure can cause catastrophic failure to the engine. If you have an aftermarket gauge this is not needed unless you want to confirm your gauge is reading correct. We can monitor your gauge at no charge if you already have one installed.
Do you have ANY mechanical problems? (Example- Running Rich, Will not idle, Poor fuel economy, boost/vacuum leaks, Not hitting target boost, Overheating, major oil Leaks, or any coolant leaks. We can not tune a car with mechanical problems.)
How many miles do you estimate are on your clutch, is it a stock or aftermarket clutch, and do you suspect it's slipping? Knowing how many miles on the clutch or if its slipping are important because we can not tune a car with a slipping clutch. If you suspect it's slipping it would be a good idea to get it replaced before the tune, If it slips on the dyno we unfortunately have to stop tuning and you will be charged for the time the car was on the dyno and will have to schedule another time to finish the tune after the clutch is replaced and broken in. Knowing what clutch you have is important because they are rated on the torque level they can hold. If you request a torque level higher then it holds and we go past that level and the clutch slips we will have to stop the tune there. The clutch may continue to slip even if we lower the power and you will ultimately have to replace the clutch.
How many miles ago was the last time your spark plugs were replaced and what were they gapped to? (If you do not know or have more than 15000 miles on them we highly recommend replacing them.) Recommend Gaps 2002-2014 WRX - .028" 2015-2021 WRX - .021" 2004-2021 STI- .028" 2004-2013 FXT - .028" 2014-2018 FXT - .021" 2005-2012 LGT - .028" 2005-2009 OBXT - .028"
When was the last time you changed oil? (If it has been more than 2 months or 2000 miles we highly recommend changing your oil before the tune.)
Do you have any exhaust leaks? (Any exhaust leak can throw off either the factory o2 sensor or our dyno Wide Band Sensor and cause the fueling to not be tuned correctly.) You must have an exhaust tail pipe that exits somewhere outside the vehicle and not underneath. I.E. the tailpipe must come to the edge of the vehicle and not terminate anywhere under the car. Our Exhaust Extraction System in the Dyno room uses a tube we put right next to the tailpipe to extract the exhaust from the room
How Strong is your Battery/ Alternator? (We can not tune with a dead battery or a charging system that does not work)
What are your Power Goals/ Expectations and Intended use i.e. Drag Racing, Road Racing, Auto-X, Daily Driving, Racing in Mexico, with your tune? (Letting us know all your expectations of the tune prior to the tune will help us guide you in the right direction as you may not have all the necessary performance parts to achieve your goal.)
Do you have any parts needed prior to your tune or any parts installed? (Our expert techs install performance parts all day. Our labor rates are very fair. And our expert support can help you decide which parts to purchase from us to achieve your goals.)
Do you need a base map to drive your car to our shop with the new parts installed? (If you have a Cobb Accessport or a Tactrix Cable, we can email you a base map to drive on with your new modifications. It can be unsafe to drive after installing modifications. Having a base map allows you to drive your car and double check it rather than waiting and towing it in and not being able to double check everything.)
If you have an AccessPort, please enter the Serial Number Sticker (examples: SUB03xxxxx or SUB04xxxxx) (We do not need the "Original Serial Number". For help locating the serial number click Here):
If you have anything wrong with your car that needs addressing before the scheduled tune date, you will want to let us know. Our expert technicians can be booked out as well, so you will want to get on the schedule to be ready for your tune.
If you have parts that you want installed prior to the tune or need parts you will want to let us know. We can help you get those parts since we are distributors of most performance brandshttps://www.jmautomn.com/parts
Pre-tune checklist acknowledgement - View our pre-tune checklist here
By checking this box and filling out this form, you are acknowledging you have read the checklist linked directly above. (required)
Failure to read through the pre-tune checklist and accurately fill out this form may result in additional charges when you come in for your tune and or us not being able to complete your tune.
Would you like a video of your car on the dyno? There is a $25 fee for this NoYes
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