Hey mate,
Bought a similar system from Japspeed UK. Looked pretty good and fit perfectly apart from secondary pipe needed modifying. It came with a bolt in silencer that you could open or close to change the sound or you could take the whole thing out and have it full flow. It is a lot louder especially around 2500-3000 revs where it booms.
Its fun for a while but have decided to change it for something a bit more reserved but still has a good howl.
hi lexuspalma i have just purchased the same system from them i think and can i ask why you had to modify the secondary pipe thanks.