A cold-start file adjusts enrichment and idle for smoother, more reliable starting in cold conditions. Useful in cold climates or for engines with rough cold idle.
For workshops
With MasterTuning you request the file, we produce it custom to the vehicle, and you flash it back — no in-house tuning required. You keep the customer and the margin.
FAQ
What is a cold start file?
A calibration that improves starting and idle in cold conditions.
Is it safe?
Yes, it optimises factory cold-start behaviour within safe limits.
Offer this to your customers: find the vehicle or contact MasterTuning for a custom file.
