Digital ProductDD84 LS Swap Startup Toolkit — Pre-Start & First Fire
Check the file formats, delivery method and license scope in the product details. No physical item ships.
DIGITAL RESOURCE
Organize your LS swap before first fire.
Digital startup guide, intake workbook and inspection checklists for GM Gen III/IV LS projects. No completed tune file included.
Eliminate first-fire guesswork and organize the LS-swap startup process before calibration begins.
The DD84 LS Swap Startup Toolkit gives builders and tuners a repeatable workflow for checking mechanical readiness, wiring, fuel delivery, calibration data, scanner channels and first-fire results on GM Gen III/IV LS-based swap projects.
Best for
- DIY LS-swap builders who want a professional startup process
- Mobile tuners and performance shops performing pre-tune inspections
- Projects with no-crank, crank/no-start, start-and-stall, unstable idle or fuel-control concerns
What this toolkit helps you do
- Catch wiring, fuel-system and mechanical problems before they become expensive failures
- Verify key-on sensor plausibility before starting the engine
- Build a focused scanner-channel list instead of logging unnecessary data
- Document the vehicle, drivetrain and calibration information in one organized file
- Follow structured diagnostic paths when the engine does not start or idle correctly
Your digital package includes
- Branded LS Swap Startup Guide in PDF format
- Multi-sheet project intake and inspection workbook
- Mechanical, electrical and calibration-readiness checklists
- Driveline and fuel-system planning calculators
- Scanner-channel checklist in XLSX and CSV formats
- Controlled first-fire log
- No-crank, crank/no-start, starts/stalls, idle and fuel diagnostic workflows
- Quick-start instructions and single-user license
How to use it
- Open the START HERE instructions.
- Complete the vehicle intake and pre-start inspection.
- Verify key-on values and scanner channels.
- Perform the controlled first fire and document the results.
- Use the diagnostic workflows before requesting calibration revisions.
Delivery and file formats
This is a digital ZIP package delivered electronically by Down Dirty 84 LLC after purchase. No physical item will be shipped. Files include PDF, XLSX and CSV formats. A compatible PDF reader and spreadsheet application are required.
Important limitations
This toolkit is a professional planning and diagnostic resource. It does not include a completed tune file, HP Tuners software, credits, licenses, controller unlocks, vehicle-specific calibration service or emissions-defeat instructions.
Need the complete system? Upgrade to the DD84 GM Gen III/IV Professional Workflow Bundle and get the startup, cam-swap diagnostic and transmission-calculation packages together.
Safety: Verify every value against the actual vehicle and reliable service information. Stop immediately for loss of oil pressure, fuel leakage, overheating, electrical smoke, uncontrolled engine speed or abnormal mechanical noise.
Single-user internal-use license. Redistribution, resale, public posting, sharing, sublicensing, transfer and white-label use are prohibited. HP Tuners and VCM Suite are trademarks of HP Tuners LLC. Down Dirty 84 LLC is not affiliated with or endorsed by HP Tuners LLC.