In August 2016 I had the following installed on my 2009 BMW 328xi:
- Heat Reflective Film applied to all windows in car: windshield, all four doors, rear, sunroof. Level 3 darkness, except the windshield which was clear, of course.
- Stage II Environmental on all four doors.
In my opinion, this stuff works, and JML Audio is the place to get the work done.
Heat Reflective Window Film: Shortly after installation, we experienced 95+ degree days for about a week. Ordinarily, the interior of my car would be a furnace with the hard surfaces hot enough to cause significant discomfort if touched. With the treatments installed, the interior was significantly cooler. Still hot, it's summer in St. Louis after all!, but bearable and definitely NOT the furnace I had experienced pre-window treatment.
Additionally, I now feel comfortable leaving the sunroof partition open (glass itself remains closed) all the time so that I can get light in from above...never did that before because the sun's heat was too much.
Stage II Environmental: This is basically sound deadening. It won't turn your interior into an anechoic chamber, but it will noticeably reduce the road noise from the outside. My proof: I don't have to turn my radio as loud any more to hear my favorite talk radio programs, and I can carry on a decent conversation with my passengers without having to compete with excess road noise.
Service: I recently discovered a leak in my front passenger door, and took the car to the dealer who very quickly blamed JML for their work. I contacted Josh Landau, who drove to the dealer shortly after I got off the phone with him and inspected the car.
It turned out that JML's work was NOT the issue, rather it was BMW's vapor barrier which, after 8 years (car built Jan 2009, this review written Feb 2017) became brittle and the glue became un-sticky (a known BMW issue). This, he explained and then showed me.
However, rather than leaving me to fight with the dealer about the brittle vapor barrier, Josh repaired it for me - at his expense. And, as mentioned above, he showed me the original, brittle barrier and formerly tacky strip.
Conclusion - JML Audio's customer service is absolutely off the charts. He wants repeat customers. And with me, he has one.
PS - It's important to note that JML Audio will use genuine OEM parts to make any repairs. He did so with the vapor barrier and tacky strip repair.
tl;dr - Products work, and customer service - even afterwards - is off the charts. He wants you to be very happy and satisfied with your purchase; he wants you to be a repeat customer.