Who's going to tune it?
Every EFI swap ends with this question. Three honest options:
Last updated
Option 1
Pay a tuner
A local shop or a remote tuner. A proper EFI tune takes hours, and even self-learning systems are best finished by a professional.
Option 2
Learn to tune it yourself
Factory-computer tuning uses specialty software such as HP Tuners and is very detailed. You can buy the tools and learn it yourself.
Option 3
Self-learning standalone
Systems like Holley's Terminator X learn fuel from real-world driving and do their initial setup from a small screen. They still need a proper tune to be fully dialed in.
What you need to tune it yourself
- A computer you can tune: the factory PCM (with HP Tuners or EFILive) or a standalone.
- A laptop, and the tuning interface for your platform.
- Your engine data: injector size, MAF, transmission, cam specs. Our tune checklist tool lists what applies to your swap.
- Patience. Start with the swap checklist and what needs a tune.
The details
Specifics depend on your computer and operating system.
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- HP Academy's EFI Tuning Starter Package is US$417 (advertised against US$1,102) or 8 payments of US$52.13, with lifetime access and a 60-day money-back guarantee. (price as listed 2026-09-29; check current)
- The starter package bundles EFI Tuning Fundamentals ($99), Understanding AFR ($89), Practical Standalone Tuning ($229), Practical Reflash Tuning ($229), and 24 months of Gold membership ($456). (price as listed 2026-09-29; check current)
- HP Academy's VIP package is US$2,497 paid once for lifetime access to all current and future courses, or 12 monthly payments of US$208.08. (price as listed 2026-09-29; check current)
- The HP Academy VIP package has also been listed at US$1,897 (or 8 payments of US$237.13), so check the current price. (price as listed 2026-09-29; check current)
- HP Academy offers 13 EFI tuning courses.
- EFI Tuning Fundamentals runs 55 video lessons (293 minutes) covering engine principles, AFR selection, injector deadtime, speed-density theory, ignition and fuel tuning, and knock.
- HP Academy's core courses apply to all engines and all engine management systems, including MoTeC, Haltech, Link and factory reflashes.
- Practical Reflash Tuning runs 144 lessons (2,183 minutes) and Practical Standalone Tuning runs 249 lessons (3,031 minutes); both teach road and dyno tuning.
- LS1, LS2, LS3, LS6, LS7, LQ4, LQ9, LM7, LR4, LY6, L92, L76: Reflash tuning means modifying the stock ECU with tools like HP Tuners, EcuTek or COBB; standalone tuning means replacing the factory ECU with a fully programmable unit.
- HP Academy course owners receive newly added worked examples at no extra charge, and HP Academy packages include lifetime access.
- LS1, LS2, LS3, LS6, LS7, LQ4, LQ9, LM7, LR4, LY6, L92, L76: HP Academy runs free live webinars - including Introduction to EFI Tuning, Introduction to Engine Building, and a GM-focused 'Reflashing Using HP Tuners' covering stock GM ECU operation, ignition/AFR changes, the HP Tuners scanner, and reading data logs - and sends recordings to registrants.
- HP Academy member webinars include the Holley Terminator series (#427 X Max intro, #429 fuel tuning, #431 trigger setup, #435 idle control, #436 injector characterization) plus electrical topics like #428 Ohm's Law.
- HP Academy's free Introduction to EFI Tuning lesson runs about 50 minutes plus live Q&A, is taught live rather than recorded, and needs no extra software; the principles covered apply to Haltech, Link, MoTeC, or factory reflash.
- HP Academy's free starting tier, Bare Minimum Tuning Knowledge, is 6 video lessons (96 minutes); the next step, Introduction to Engine Tuning, is US$19 with 31 lessons (118 minutes). (price as listed 2026-09-29; check current)
- HP Academy's Gold membership provides a private members-only forum, twice-monthly live member webinars, and a technical article archive.
- HP Academy's Practical Diesel Tuning course includes a full step-by-step EFILive Tune Tool worked example that buyers own for life.
- That diesel course's EFILive modules cover a 5-step diesel tuning process, fueling quantity/pressure optimization, boost control, sensors, injection timing, DPF reaction to fueling, reflash vs standalone, and making power while remaining legal.
- Evans Performance Academy sells EFI Basics for US$74.99, EFI Advanced for US$149.99, or both bundled for US$199.99 - a US$25 saving. (price as listed 2026-09-29; check current)
- Evans course purchases include lifetime access to current and future material, downloadable videos to keep, plus course-specific software displays, graph layouts, calibration and datalog examples, and PDFs.
- Evans' EFI Advanced course covers volumetric efficiency, fuel flow calculations, injection timing, and variable cam control in focused, refer-back-able videos.
- LS1, LS2, LS3, LS6, LS7, LQ4, LQ9, LM7, LR4, LY6, L92, L76: Evans' Holley EFI course is US$249.99 (40+ videos, 20+ hours from base-calibration creation to the final dyno pull, covering knock, idle, nitrous, and boost control); a live Dynapack dyno training add-on is US$249.99; the master bundle is US$449.99 (50+ videos, 25+ hours) for Holley HP and Dominator. (price as listed 2026-09-29; check current)
- Evans offers a US$49.99/month online subscription with system-specific courses for AEM Infinity, HP Tuners, Haltech and Hondata, plus troubleshooting, dyno operation and wiring. (price as listed 2026-09-29; check current)
- Evans' lifetime membership covers all past, present, and future courses with lifetime forum and email support and downloads of all content, templates, calibration files, and datalogs.
- HP Academy's Understanding AFR course runs 36 lessons (103 minutes) and is priced at US$89. (price as listed 2026-09-29; check current)
- HP Academy orders its EFI learning path from free Bare Minimum Tuning Knowledge (6 lessons) through Introduction to Engine Tuning ($19), EFI Fundamentals ($99), Understanding AFR ($89), and then Practical Reflash or Practical Standalone ($229 each). (price as listed 2026-09-29; check current)
- HP Academy's Performance Tuning Essentials bundle is US$599 (or 8 payments of US$74.88) against a stated value of US$1,379. (price as listed 2026-09-29; check current)
- Evans Performance Academy structures EFI Basics as a 12-part series aimed at tuning novices.