I drive a Subaru WRX or STI
Choose your generation for pricing, preparation and datalogging requirements.
TUNED BY KEITH / CUSTOM TUNING & MAPS
Your vehicle.
My experience.
A tune should make the whole car better to drive. Work directly with me on response, drivability and usable power—from Subaru e-tunes to standalone projects.
AP tunes: $400 single fuel / $600 flex fuel
Standalone tunes: $500 single fuel / $750 flex fuel
Retunes from $200 · Base map $50
Meet Cinderelli, the orange 2024 WRX from my AWD Tuning background. Explore the build →
START HERE
Which path fits your build?
Choose your vehicle or project. I’ll help you confirm the setup, choose the service and plan the tune.
I drive a Porsche
Modern COBB tuning or vintage engines with Kinsler and standalone management.
I need COBB tuning
Find model-specific coverage for supported factory-ECU applications.
I have a standalone ECU
Emtron, Haltech, MoTeC, Link or MaxxECU setup, tuning and ECU packages.
I want a dyno or travel session
Work with Keith in person or coordinate a tuning visit at your local facility.
I run a shop or build engines
Calibration consulting, project support and business services through Calibrations LLC.
Not sure which route fits? Send your setup to Keith. Need a starting calibration? Explore base-map services.
Tuning since 2005More than 20 years of hands-on experienceWork directly with KeithSetup review, calibration and feedbackStreet to competitionBuilt around how you use your car
BEFORE YOU CHOOSE
Which tune fits me?
Start with the kind of help you need, then choose your tuning platform and fuel setup. If compatibility is uncertain, ask before paying.
I need a new custom tune
Choose this for your first Keith calibration on the current setup. We develop the tune through the agreed log review and revision process.
I already have a Keith tune
A retune may fit if you already have my calibration and something has changed. Send your previous order and the hardware or fuel changes so I can confirm eligibility. Another tuner’s file does not establish retune eligibility.
I only need a starting map
The $50 base map is a starting calibration for an approved setup. It is not a finished custom tune or permission for full-load driving. Confirm its intended use with me first.
Accessport or standalone?
AP services are for a supported COBB Accessport calibration. Standalone services are for an aftermarket ECU. If you use another tuning tool or do not know what is installed, send your year, model and goals to Keith so I can confirm the right route.
Single fuel or flex fuel?
Single fuel: the tune is developed for the agreed fuel and setup. Flex fuel: compatibility depends on your ECU, fuel system, ethanol measurement and tuning platform. Buying a flex-fuel tune does not supply the required hardware or licenses. Tell me what is installed and what fuel you plan to use before ordering.
Not sure? Four details are enough to start. Send your name, email, year and model, and what you would like help with. Ask Keith — no payment required →
FIND YOUR TUNING PLATFORM
Find the right route for your vehicle.
COBB Accessport
Explore model and trim coverage for Subaru, Porsche, Mazda, Ford, Nissan GT-R, Toyota trucks/SUVs, Volkswagen, Audi, Honda, Acura and other supported applications.
View COBB coverage ↗Open-source tuning
EcuFlash and RomRaider inquiries are reviewed against your exact ECU, ROM definitions and interface. For supported FA20 and FA24 WRXs, explore Atlas tuning.
Review my open-source setup ↗Exact year, engine, transmission, market and ECU support are reviewed before file delivery. Ask before checkout if compatibility is uncertain. Hardware, licenses and tune files are specific to the selected platform.
ATLAS / FACTORY ECU TUNING
Atlas tuning for your WRX.
Atlas WRX tuning: compatibility, process & quotes →
Work directly with Keith on a custom Atlas calibration for a supported 2015–2021 FA20 WRX or 2022+ FA24 WRX. Start with your hardware, fuel and driving goals; I confirm the exact ECU, transmission and market before we agree on the tuning plan.
Custom calibration & revisions
Discuss remote tuning through requested logs and feedback, or a coordinated in-person session. We agree on the fuel, hardware, revision scope and delivery plan before work begins.
Ask about an Atlas tune →Equipment & compatibility
Send your model year, transmission, market, ECU/ROM ID, Atlas version and adapter model. Include your current tuning platform and any engine or ECU swaps. Logging equipment is confirmed for your combination.
Read the Atlas setup guide →Atlas pricing and any licensing or hardware costs are confirmed with your quote. The Accessport prices above apply to those services. No payment is required to ask about Atlas.
Moving from an Accessport? Discuss the transition before changing files or returning to stock, especially on a modified car. Atlas does not use Accessport maps or the Accessport as its interface. Atlas is not currently offered here for EJ/STI applications.
PORSCHE TUNING
Modern performance.
Classic character.
Explore my Porsche work: custom tuning for supported COBB applications, plus vintage 964 4.0-liter engines, Kinsler throttle systems and standalone calibration with MaxxECU, Emtron Shadow and MoTeC.
For owners, engine builders and restoration shops. Remote support, dyno sessions and worldwide travel are scoped around the project.
Explore Porsche tuning ↗FIND YOUR CUSTOM E-TUNE
Driving a WRX or STI?
These dedicated guides explain the service, preparation and logging requirements for your Subaru.
2022+ Subaru WRX e-tuning
A custom tune for your VB WRX.
Single-fuel AP $400 · Flex-fuel AP $600
View tuning details ↗2015–2021 Subaru WRX e-tuning
Your FA20 WRX, tuned as a complete setup.
Single-fuel AP $400 · Flex-fuel AP $600
Explore this service ↗2002–2014 WRX & 2004–2021 STI e-tuning
Subaru roots. A tune for your particular EJ.
Single-fuel AP $400 · Flex-fuel AP $600
Explore this service ↗STANDALONE ENGINE MANAGEMENT
Explore your ECU.
Understand the tuning process, what information to prepare and the builds behind my experience. Standalone tunes are $500 for single fuel or $750 for flex fuel. Hardware, installation and additional project scope are quoted separately.
Link ECU tuning
Subaru flex-fuel projects and LS-swapped Nissan experience. Review the installed ECU, wiring and calibration needs.
Explore Link tuning →Emtron tuning
Subaru development and street-oriented builds, with sensors, control strategy and drivability considered together.
Explore Emtron tuning →Haltech tuning
Plan wiring, sensors and engine hardware before calibration. See the requirements for your installed system.
Explore Haltech tuning →MoTeC tuning
Review your ECU configuration, fuel system and control requirements, including vintage Porsche engine projects.
Explore MoTeC tuning →MaxxECU tuning
Explore MTune preparation and my large-cam Porsche 964 project with Kinsler hardware.
Explore MaxxECU tuning →Still choosing an ECU?
Tell me about the engine, intended use and features you need. Discuss hardware and tuning packages before buying.
Compare standalone options →IN-PERSON TUNING · WORLDWIDE
Prefer time on the dyno?
Request a dyno session for your vehicle or host me at your shop. Worldwide travel visits and coordinated dyno days are quoted around your location, vehicles and facility.
Explore dyno & travel tuning ↗FORD / COBB ACCESSPORT
Focus, Fiesta or Raptor?
Check the tuning route, equipment and information needed for your exact Ford before ordering.
Ford tuning requirements and next steps →FROM CHECKOUT TO FINISHED TUNE
Your service. One clear process.
1. Choose and pay
Select your service, enter your vehicle details and pay through secure QuickBooks checkout. If you need help choosing, send a free inquiry first.
2. Review your setup
I review your hardware, fuel and ECU before preparing your file. Any additional work or cost requires your agreement. Unsupported setups can be refunded before work begins.
3. Tune and refine
Use your private order page for calibration files, instructions, messages, datalogs and revisions. Complete information and usable logs keep the process moving.
A base map is a starting calibration; follow-up tuning is separate. Hardware, licenses, diagnostic work and in-person sessions are quoted separately.
Choose my service →DELIVERY & REVISIONS
Typical turnaround
Initial map delivery and each agreed tuning revision are usually completed the same business day and will not exceed one business day once everything needed is received.
- Initial delivery: the clock starts once I have approved your setup, payment is confirmed and all required vehicle details and files have been received.
- Revisions: the clock starts when I receive the complete requested datalogs and feedback. Use the delivery method agreed during onboarding and include your inquiry reference.
- Business hours: Monday–Friday, 8 a.m.–6 p.m. Pacific. Requests received outside these hours begin the next business day; weekends are not business days.
This turnaround applies to each file delivery or revision, not completion of the entire tuning process. Time spent collecting logs, supplying missing information or resolving vehicle issues is separate. I’ll explain what is needed if work cannot proceed.
Custom tunes include up to eight revisions within the approved scope. Hardware or fuel changes, diagnostic work and additional revisions may require a revised scope agreed before work continues.
SUBARU ENGINE MANAGEMENT / HARDWARE PACKAGES
Choose your ECU or complete package.
2004–2021 STI · 2002–2014 WRX. Choose ECU-only supply or a complete package, then select your vehicle and hardware. Review your selection before sending it to Keith.
Choose your vehicle and package
Select every field to continue. Your selection carries into the inquiry below; no payment is taken.
Prices are USD for the listed hardware on standard USDM manual applications. Installation, tuning, shipping, sales tax and additional wiring, fittings or mounting supplies are separate. Availability and fitment are confirmed before payment. Manufacturer competition-use restrictions apply; these packages are not advertised as emissions-certified road replacements.
BEFORE WE GET STARTED
A few practical answers.
Can I buy a tune immediately?
Yes. Choose a service above, enter your vehicle details and continue to secure QuickBooks payment. Your paid order enters my queue; I review compatibility before preparing or releasing a file. If you need help choosing, the inquiry form is free.
Which service should I choose?
Choose AP for an Accessport calibration or standalone for an aftermarket ECU, then select single fuel or flex fuel. Retunes are for an existing Keith calibration. A base map is a starting calibration, not a complete tune. Hardware, licenses, diagnostics and unusual combinations may require a separate quote. Ask first if you are unsure.
How soon will I receive a file or revision?
Usually the same business day, and within one business day once I have everything needed for that step. Initial delivery requires setup approval, confirmed payment and complete vehicle information. Revisions require the requested usable logs and feedback. Business hours are Monday–Friday, 8 a.m.–6 p.m. Pacific.
What if I do not know which ECU or service I need?
Send your year, make, model and goals using the four-field inquiry form below. Add technical details if you know them; I will help identify the next step. You can also Call Keith: (714) 367-4201.
FREE INQUIRY · NO PAYMENT REQUIRED
Ask Keith about your setup.
Tell me what you drive, what you want to improve and which service interests you. Unsure about the tuning platform? Choose “Help choosing.”
Prefer a conversation? Call Keith: (714) 367-4201.
PREPARATION & FUTURE PRODUCTS
The details when you need them.
Tuning guides & printable checklists →
Equipment & preparation · Accessport flashing & logging
WRX/STI wideband logging and flex-fuel questions
STI & EJ WRX / WIDEBAND FAQ
Record the mixture.
Understand the result.
EJ remote tuning requires an external wideband with an approved way to record AFR or lambda alongside the engine log. A factory oxygen-sensor reading, gauge display or gauge video does not replace that recorded data. Confirm the controller and logging connection with me before buying equipment.
Why do I need a wideband if my Subaru already reports AFR?
A factory AFR reading or commanded fuel target is not a substitute for the external measurement I request for your tune. I use the wideband record to assess actual mixture with engine load, RPM and the rest of the log. Factory sensor behavior and the available channels vary by ECU and ROM.
Is an AFR gauge or a video of the gauge enough?
No. A gauge is useful for the driver, but I need recorded measurements that can be related to the engine log. A video or screenshot does not replace that data. Depending on the setup, this may mean an approved ECU input, a supported serial connection, or a separate logger with an agreed synchronization procedure.
Will a plug-in harness put wideband data into my COBB Accessport log?
Do not assume it will. iWire specifically identifies a post–Green Speed limitation for its AEM kit's ECU-input logging approach. That does not mean an external wideband cannot record independently; it means the harness, ECU input and current tuning software must be checked together. I confirm a workable method before you purchase a kit. See the COBB Green Speed guide and iWire's compatibility notice.
Which model years does the loggable wideband option cover?
The planned option is for 2017-and-earlier WRX/STI applications. This EJ section covers the 2002–2014 WRX and 2004–2017 STI within that range; 2015–2017 WRX applications need their own FA-platform fitment review. For 2018+ vehicles, contact me for a separate logging plan. Model year alone does not verify a harness or software connection.
Can you support my pre–Green Speed flex-fuel kit?
I review both existing legacy COBB configurations and compatible open-source/standalone setups. Send the exact kit, wiring, ECU/ROM and software details first. Legacy hardware support is not a promise that a current COBB software version can edit or use every older configuration.
Can I use Innovate or Zeitronix?
Yes, subject to approval of the exact controller and logging setup. Innovate LC-2 provides programmable analog outputs and a serial logging path. Zeitronix Zt-3 offers a configurable analog output and serial datalogging. Those features do not automatically establish compatibility with your Accessport, ECU input or logger. Confirm the complete kit, including its matching sensor and required interface.
What needs checking before the first full-load log?
Follow the manufacturer's installation and calibration instructions. Verify sensor/controller compatibility, power and grounds, sensor placement, warm-up, absence of exhaust leaks and the exact output scaling. Send a sample log first so I can check that the recorded value agrees with the controller/display. Do not substitute another brand's voltage-to-AFR formula.
Should I send AFR or lambda?
Use the units requested for your tune and identify them clearly. AFR displays depend on their configured fuel scale; do not assume an AFR number is directly comparable across different fuels or device settings. Keep the controller, gauge and logger settings consistent.
Do I remove a factory oxygen sensor or disable a fault code?
Do not remove required emissions sensors or disable diagnostics to make a logging kit work. Ask me and your installer to confirm a suitable sensor location and supported data path for the vehicle. An adapter harness does not establish emissions compliance.
What if I cannot provide usable wideband data?
Full-load remote fueling work waits until we have an approved measurement and logging method. We can discuss installation help or a dyno session with suitable instrumentation. Do not perform a pull just to see what happens; follow the instructions issued for your specific map and collect data only in appropriate, controlled conditions.
Planned wideband hardware packages
PLANNED HARDWARE / NOT YET FOR SALE
A complete wideband
logging package.
For 2017-and-earlier WRX/STI applications, I plan to offer Innovate- or Zeitronix-based packages that bring the controller, matching sensor, vehicle-specific wiring and logging instructions together. The aim is a clearly documented installation and useful data from the start.
Innovate-based package
LC-2 is a candidate for a controller-based setup. Exact controller, sensor, display options and logging interface will be selected and validated before release.
Manufacturer LC-2 documentation →Zeitronix-based package
Zt-3 is a candidate for AFR/lambda logging with optional display arrangements. Exact hardware and compatibility will be documented for each package.
Manufacturer Zt-3 documentation →Pricing, availability and fitment are not finalized. No preorders or universal plug-and-play claim. Before sale, each kit needs a verified vehicle/ECU/software matrix, installation instructions, output scaling, a sample-log check and a complete parts list. These are planned Tuned by Keith offerings, not an announced iWire partnership.
Ask about a wideband package ↗Affirm payment information
PAYMENT OPTIONS
Pay over time
with Affirm.
Choose a service and enter your setup to open secure QuickBooks checkout. Eligible customers can apply to pay over time with Affirm when it is offered on the invoice. Choose Affirm at invoice checkout when it is offered, then review the available payment plans before you decide.
Payment options are subject to eligibility and approval. Rates, terms and any applicable fees are shown during checkout. Availability can vary by invoice and customer; financing is not guaranteed.
Your tuning scope and delivery process stay the same: work begins after your setup is approved, payment is confirmed and the required information is received.
Discuss my setup ↗Before you order
Review the service terms, file license and refund policy and our privacy policy. Provide complete vehicle details at checkout. Ask Keith before paying if your platform, hardware or service scope is uncertain.