As most of you know i just got this car, and it has a full exhaust system and when driving on 2nd or sometimes 1st gear I hear a loud sound going through the exhaust then it calms down to the regular deep rumble.. so between 1 and 2nd i hear a very deep rumbling sound.. feels like something is not flowing right.. I'm going to try to record the sound and try to play it for you guys, if you don't understand me.. I never had an exhaust system so i don't know if that's normal.. Thank You .... I used the search button and found this https://www.hondaaccordforum.com/for...system+problem my problem could be similar, description sounds alot like mines

 

Probably the typical raspiness of a low-end exhaust.

 

Acually I was driving yesterday a bumpy road, After that I stop hearing the sound so maybe something was out of place. I'll see if it do the same noise again. Thanks for your help.