| Make | Model | Fuel Type | Original BHP | Tuned BHP | BHP + | Original Nm | Tuned Nm | Nm + | |
| Citroen | C4 Coupe - 1.6 HDi - 109-BHP (09/2008 - 12/2010) | Diesel | 109 | 140 | 28% | 240 | 300 | 25% | Request a Callback |
| Citroen | C4 Coupe - 2.0 HDi - 138-BHP (09/2008 - 12/2010) | Diesel | 138 | 165 | 19% | 320 | 380 | 18% | Request a Callback |
| Citroen | C4 Coupe - 1.6 HDi - 88-BHP (09/2008 - 12/2010) | Diesel | 88 | 115 | 30% | 230 | 260 | 13% | Request a Callback |
| Citroen | C4 Coupe - 1.6 HDi - 109-BHP (10/2004 - 08/2008) | Diesel | 109 | 140 | 28% | 240 | 300 | 25% | Request a Callback |
| Citroen | C4 Coupe - 1.6 HDi - 88-BHP (10/2004 - 08/2008) | Diesel | 88 | 115 | 30% | 230 | 260 | 13% | Request a Callback |
| Citroen | C4 Coupe - 2.0 HDi - 134-BHP (10/2004 - 08/2008) | Diesel | 134 | 164 | 22% | 320 | 380 | 18% | Request a Callback |
| Citroen | C4 Coupe - 1.4 - 88-BHP (09/2008 - 12/2010) | Petrol | 88 | 99 | 12% | 133 | 146 | 9% | Request a Callback |
| Citroen | C4 Coupe - 1.6 - 109-BHP (10/2004 - 08/2008) | Petrol | 109 | 123 | 12% | 147 | 164 | 11% | Request a Callback |
| Citroen | C4 Coupe - 1.4 - 88-BHP (10/2004 - 08/2008) | Petrol | 88 | 99 | 12% | 133 | 146 | 9% | Request a Callback |
| Citroen | C4 Coupe - 2.0 - 141-BHP (10/2004 - 08/2008) | Petrol | 141 | 157 | 11% | 200 | 220 | 10% | Request a Callback |
| Citroen | C4 Coupe - 2.0 - 135-BHP (10/2004 - 08/2008) | Petrol | 135 | 150 | 11% | 190 | 207 | 8% | Request a Callback |
| Citroen | C4 Coupe - 1.6 - 118-BHP (09/2008 - 12/2010) | Petrol | 118 | 135 | 14% | 160 | 180 | 12% | Request a Callback |
| Citroen | C4 Coupe - 2.0 - 177-BHP (10/2004 - 08/2008) | Petrol | 177 | 195 | 10% | 202 | 217 | 7% | Request a Callback |
| Citroen | C4 Coupe - 1.6 - 147-BHP (09/2008 - 12/2010) | Petrol | 147 | 190 | 29% | 240 | 300 | 25% | Request a Callback |
| Citroen | C4 Coupe - 1.6 - 109-BHP (09/2008 - 12/2010) | Petrol/Bio-Ethanol | 109 | 123 | 12% | 147 | 164 | 11% | Request a Callback |