I found the best results for reducing the noise of the engine bay by completing it.. post pics into someone else's project here...

https://www.fitfreak.net/forums/2nd-...ml#post1259524

 

wow... I am looking back at this old thread of mine to find some info on the MLV that I now plan to use to block some heat under the power distribution block...
Reading this thread make me remember the tons of work that I did to sound dampened this car...
hopefully my next car in the future already quiet from the factory so I don't have to do this again... I feel tired just reading this thread...

 

So, did you measure the decibels before and after the insulation was added?

 

Hello,
Sorry for late reply,
I never measure the decibels before and after because I don't have decibels meters,
but I can assure you not only the car feel more quiet (like much more quiet), it also feel more solid (because the whole floor and roof is basically thicker now since those CLD tiles really stick to the panel and kinda like reinforce it too). Actually I should not say it feel but it really is more quiet and solid,
not placebo effect on this