Just a quick question,
How do you evaluate your installs to determine if what you have done has made an actuall improvement?
I always see posts about people adding massive amounts of dynamat or other materials to the whole vehicle but I'm wondering how people know whats the best?
Does this not depend on what your trying to achive? ie road noise, wind noise ICE?
I know for power people do use dyno's for baseline runs then add mods and run again to see what the effects were.
What test do people do for evaluating sound deading materials added to the car?