Fuel Trim (STFT/LTFT)
Tuning
lambda correction values — Short-term and long-term fuel trims (STFT/LTFT) are ECU corrections to maintain stoichiometric burn. Persistent +15% LTFT = vacuum leak / failing MAF.
Tune Fuel Trim (STFT/LTFT) with DaVinci Deluxe
Professional ECU tuning software. €299 lifetime, 10 min free trial.
See pricingRelated terms
Stage 1
software-only tune on stock hardwareStage 2
tune supporting bolt-on hardware modsStage 3
major hardware build with custom tunePops & Bangs
overrun fuel-cut delay for exhaust cracklesLaunch Control
rev-limiter for optimal launchesAnti-Lag (ALS)
keeps turbo spooled off-throttleRev Limiter
maximum engine RPM cutoffSpeed Limiter
top-speed cutoff
software-only tune on stock hardwareStage 2
tune supporting bolt-on hardware modsStage 3
major hardware build with custom tunePops & Bangs
overrun fuel-cut delay for exhaust cracklesLaunch Control
rev-limiter for optimal launchesAnti-Lag (ALS)
keeps turbo spooled off-throttleRev Limiter
maximum engine RPM cutoffSpeed Limiter
top-speed cutoff