Popular
Pops & Bangs (Crackle Map)
The signature pops and crackles from the exhaust when you lift off the throttle — with the intensity set to your taste.
Cold Start Idle Delete
A software adjustment that reduces the high, noisy idle speed when the engine is started from cold.
- Petrol
- Diesel
- ~1 h
About the service
What is it and how does it work?
When a petrol engine is started cold, it briefly runs at high RPM with retarded ignition to bring the catalytic converter up to operating temperature quickly. During this time the exhaust gets noticeably louder; especially on cars with a sport exhaust, this can be disturbing in a residential car park or narrow streets in the morning. Diesel engines also have strategies that raise the idle on a cold start; suitability is assessed per engine.
A cold start idle delete reduces the RPM flare on the first start and the loud noise that comes with it; the engine warms up at a calmer idle. The fuel enrichment and protection functions the engine needs when cold are left in place; only the high-idle strategy for catalyst heating is adjusted.
Since the catalyst heating strategy is designed to reduce cold-start emissions, this adjustment may affect emission values in the first few minutes. For this reason, like our other services that touch emission systems, we treat it as track / motorsport-focused; the original software is kept and can be restored on request.
Benefits
What do you gain?
- A quieter idle on morning starts
- Neighbour-friendly first start for cars with sports exhausts
- Cold engine protection functions stay in place
- Can be applied in one go together with other software
Process
How is it done?
-
01
Step 01
The car’s cold-start behavior and exhaust setup are assessed.
-
02
Step 02
The original software is backed up.
-
03
Step 03
The high-idle strategy for catalyst heating is adjusted in the software.
-
04
Step 04
The result is verified with a cold-engine start test.
FAQ
Cold Start Idle Delete — FAQ
The most frequently asked questions about this service, with short answers.
Have another question?Message us with your car’s make, model and engine.
Does a cold start idle delete harm the engine?
No. Only the high-idle strategy used to heat the catalytic converter quickly is adjusted; the fuelling and protection functions the engine needs when cold are left untouched.
Which cars is this adjustment most popular on?
It’s especially popular on petrol cars with a sports exhaust, downpipe or valved exhaust system that are started early in the morning in residential areas.
Compatibility
Which vehicles is it available for?
Availability depends on the car’s ECU type, engine and hardware. In our vehicle database, this option is listed for the number of engines below; you can check by selecting your own car.
- Engines
- 2.475
- Makes
- 46
- Share of database
- %31
Vehicle Selector