Courtenay Sport Stage 1+ Tuning Package Astra J VXR

To meet the stringent Euro 5 emissions regulations the engine prior to registration has to be fitted with a very restrictive 600 cell per inch cat which is mounted in not the best flowing pipework, however once registered the factory fitted 2nd catalyst (fitted in the next section back) is fully capable of passing MOT requirements.

So for stage 1+ we remove the factory front pipe complete with its restrictive catalyst and install a free flowing 3” front pipe featuring far smoother flowing bends. Once fitted we install and optimise our Exclusive Courtenay Sport software on our rolling road to take full advantage of the much improved flow and output due to the engine's vastly improved breathing, and provide full power and torque graphs.

Power Gains to 320 bhp Torque 360-370 lb ft