yeah ...kent ...is a friendly and good seller ...after he helped me to install my full exshaust system...he claimed that the noise won't be too loud ....but ...after it is done ...even he himself thinks that the the sound is kinda noisy too ...at 1st ..i didn't really complain about it ..i was quiet and drove off with the happy modding from kent although it is abit noisy ...but the performance result is there due to the setting he gave me ...at last he gave me a call and willing to help me reduce the sound with his idea without charging me xtra money juz to make sure im fully satisfiy with the job ...kent ...thx alot man ...the engine oil cover will take from you when i free , haha...*thumbs up* for you ...