08-12 Accord i4

KTuner for 08-12 Accord i4 LX/LX-P/LX-S/EX/EX-L including PZEV models

KTuner is for off-road research and development testing only. Every vehicle should be flashed back to factory before being driven on a public road.

Dyno Testing Results Can Be Found At The Bottom Of The Page

What are my options?
KTunerFlash End User System – Hardware+Software. Datalog and make your own changes – $449

• KTunerFlash V2 End User System – All-In-One Display/Flash Hardware+Software. Datalog and make your own changes – $649

How do I get KTuner?
• Contact a dealer for dealer testing or to order a KTuner kit.

Part numbers for usable ECUs include:
08-09
37820-R40-A11 through A19
37820-R40-A51 through A59
37820-R41-L51 through L59 (PZEV)
37820-R42-A01 through A09
37820-R42-A51 through A59
37820-R43-L51 through L59 (PZEV)
2010
37820-R40-A21 through A24
37820-R40-A71 through A73
37820-R41-L61 through L63 (PZEV)
37820-R42-A11 through A14
37820-R42-A61 through A63
37820-R43-L61 through L63 (PZEV)
11-12
37820-R40-A31 through A34
37820-R40-A81 through A83
37820-R41-L71 through L73 (PZEV)
37820-R42-A21 through A24
37820-R42-A71 through A73
37820-R43-L71 through L73 (PZEV)

KTuner feature matrix for 08-12 Accord (BETA means the feature is currently in testing phases):

Feature Release BETA End User Dealer Tuning Reflash
Real-Time Logging X X X
Real-Time Tuning Mode X X
Injector Sizing X X X X
Ignition/Fuel Tuning X X X X
VTC Tuning X X X X
Knock Tuning X X X X
Throttle Control Maps X X X X
Rev Limiter Settings X X X X
2-Step Settings X X X X
Adjustable 2-Step X X X X
Anti-Lag X X X
Custom Map Sensor Support X X X
Speed Density Fueling X X X
Expanded Tables For Boost X X X
PWM Boost Control X X X
Boost Cut X X X
VTEC Window Control X X X X
Closed Loop Control X X X X
Disable Sensors X X X X
Fuel Cut Parameters X X X X
Fuel Correction Parameters X X X X
Ignition Correction Parameters X X X X
Idle Control Parameters X X X X

Speed Limiter Has Been Removed. Please adhere to your tire speed limitations and note this feature is for off-road use only.

Dyno Plots
2012 LX Auto – Click To Enlarge
Dyno Comparisons
Tuning done on 91 Premium fuel in Arizona at 1100 ft.

Dashed Red – Baseline – With RV6 PCD, TBS, Pulley
Dashed Pink – +13tq, +15hp – Tuned with RV6 PCD, TBS, Intake Port, Pulley
Solid Blue – +10hp on the top end approaching the limiter – Tuned with RV6 PCD, HFC, Pulley, Intake, 3″ Exhaust

2008 EX-L Manual – Click To Enlarge
Dyno Comparisons
Tuning done on 91 Premium fuel in Arizona at 1100 ft.

Dashed – Baseline – Factory Tune With Intake
Solid Green – +17tq, +13hp – Tuned With Intake