Exhaust Noises when Hot

[way2fast4u]

Ok i just got my system put on not to long ago.. Look at my profile to read what i have..

Let me ask this.. When the stang warms up to temp does the exhaust noise change?

Reason i ask this is i noticed with my setup when i first start it sounds pretty good but as i drive maybe 30mins later when its a little warmer it gets louder!!! in a good way.. is that normal anyone else having this problem.. I really want it to sound this way from get go.. but i do no sometimes once the mufflers warm up they get loud? who no's .. Need input.. thanks..

 

[bimmertech]

best answer i can muster is that when your car is cold your ecm is not yet in closed loop, and when it finally does at around 165 coolant temp, depending on manufacturer, the a/f ratio may change depending on your mods and how much adpatation the ecm has to do.