TDI Tuning box chip for Alfa Romeo 4C 1.7 TBi 237 BHP / 240 PS / 177 KW / 350 NM / 258 LBFT


In Stock Direct Ship

Part# 5367

Does This Fit Your Car?

Cutting Edge Tuning Technology

TDI Tuning's CRTD4 Tuning Box is at the cutting edge of digital tuning box technology and represents a revolution in vehicle performance chip tuning. Based on micro-processor architecture, the CRTD4 Tuning Box remaps vehicle performance moment by moment by interfacing with your engine via our connection harness which just plugs in.

After installation your vehicle’s power will be increased by:

Stock PS 240
Tuned PS 295
Increased PS 55
Stock BHP 237
Tuned BHP 292
Increased BHP 55
Stock KW 177
Tuned KW 218
Increased KW 41
Stock LB FT 258
Tuned LB FT 310
Increased LB FT 52
Stock NM 350
Tuned NM 420
Increased NM 70

These increases will make a significant difference in performance to your vehicle which you will notice straight away.

A Revolution in Vehicle Performance Tuning

The CRTD4 Tuning Box transforms the everyday driving experience by increasing available Power and Torque whilst remapping power delivery, increasing responsiveness and eliminating flat spots in individual gear acceleration arcs. On top of this in many cases the CRTD4 reduces turbo lag for the vehicle which further boosts vehicle responsiveness and acceleration performance as well as smoothness of power and torque delivery creating the best possible performance remap experience.

Improved Fuel Efficiency:

TDI-Tuning tuning boxes increase power and fuel efficiency simultaneously using a model variant specific map which is pre loaded onto your tuning box before dispatch.

5 Year Product Warranty:

The CRTD4 comes with a 5 year product warranty as standard. The warranty covers the full workings of the CRTD4.

Traceless removal:

Once removed leaves no trace behind, returning the vehicle to its factory standard condition.


Our tuning boxes can often be used on future vehicles via a low cost reprogramme service.

Engine safe:

Our products integrate with your engine via various engine sensors, ensuring your ECU is always in control and no damage can come to your engine.

Custom programme:

The software our tuning boxes utilise is completely custom to the specific engine variant. Nothing is generic and all our software maps are designed by our engineers in-house.

Simple Install:

Easily installed in under 30 minutes requiring no specialist tools or mechanical ability and absolutely no physical modifications to the engine.

Optional Bluetooth App Control:

The UK’s leading tuning box just got better! Now with optional Bluetooth capabilities the CRTD4 tuning box brings the benefits of tuning to your fingertips.

Now you can control the performance of your engine from the comfort of your driving seat with the TDI Tuning App. Connect to your tuning box and enjoy total control, transforming your driving experience.

***Please message us to discuss our Bluetooth version of the CRTD4 - Additional costs apply***

⚠️CALIFORNIA WARNING: Cancer and Reproductive Harm -

Can't find what you're looking for?
Odds are we can get it! Click Here Now