07-09-17, 12:54 AM
Tell you honestly, the funny thing is the real exciting noise coming by 4-6k, over that is similar like before only louder... So basically I don't rev too much higher than before....
Since I've posted here, I did some research, and I've read something about so called back-pressure in muffler, the airflow is more easy, shorter and faster, so the engine need more air on inside, but I didn't change for something high flow air filter.... But i am not sure, really would be great some advice from a real expert
Since I've posted here, I did some research, and I've read something about so called back-pressure in muffler, the airflow is more easy, shorter and faster, so the engine need more air on inside, but I didn't change for something high flow air filter.... But i am not sure, really would be great some advice from a real expert