Astra G z20let ST1

[vectrapg]

Hello

Patient Astra G z20let

Does anyone own a st1 with pops and bang & hurd cut

modifications
exhaust 3 inches all round
larger intercooler
intake eds
turbo LEH

thank you in advance

[Krisfuzzy]

This car has already been modified before.

[vectrapg]

It has already been completely modified. But unfortunately it is badly made because after all this tuning the power only increased by 8hp