AltVelo

From what I recall, if mounted inside the cabin, the exhaust notes is clear. I used the thinner rear door on the case. Camera was mounted on the inside of wind shield.

The perspective I prefer and more engaging to watch is where you capture both in cabin action and the road. For this shot, it's you can see driver's input, the road and hear the exhaust note. For this perspective, camera should be placed between the 2 front seats. Also to minimize distortion and have a more realistic view, I try not to use "wide" mode.

For cars with typical head rests(with the 2 metal bars) the mount is simple as you can clamp there. Since Porsche seat backs are one piece, I mounted the base behind the seat and with a goose neck, it extend to the center between the 2 seats. I didn't want to use the "sticky tape" mount from the gopro as it looks tough to clean off. Instead I plan to use the screw that holds the seat back coat hanger to mount by base.

With that said, and back to OP's question, I would place it in cabin between 2 front seats and one on outside to capture

The perspectives that were most engaging to me are cabin view(as noted above) and outside driver's side window(to see driver and road ahead).

AltVelo

I just tried the back of seat mount. Though a great location for the perspective as you get the driver action and road BUT it's not stable. The seat back shakes. This is without a passenger so perhaps with it maybe more stable?

DrCGuerra

I tested that out yesterday and did not like the amount of shaking and picked up a bunch of noise including a rattle-like noise that I could not figure out what it was other than it was "rattling" in its own case, which I know it wasn't. I found that placing the GoPro at the uppermost portion of the rear view window using just the suction cup and inverting the picture worked the best. Very little noise other than picking up the engine and gave a better view of the cockpit and out the front window. I should be receiving my tow hook and GoPro bracket from Rennline today so that I can attach my second camera to the front bumper.

AltVelo

I found this to be too far back and shooting mainly the back of the rear seats. I think I will try suction cup mount on rear window with an extension(goose neck).

Homeles

Don't bother. It vibrates more than a woman's toy!

DrCGuerra

Don't worry about using the gooseneck. Just use the suction cup at the uppermost portion of the rear window & use your iPhone to adjust what you are viewing. Works great & no risk if vibration from the gooseneck.

my991na

I used both the rear window and sunroof..

991carreradriver

I mount using this method. If anyone is interested in the view, here is a short video from the Glen last July of my previous 911.

DrCGuerra

Great clip. Ordered mine but can't get it to work. Left message with Shawn at Rennline to see if they sent me the right part. What software did you use to capture the video & superimpose the track & speed? Loved that.

991carreradriver

I used an iPhone, Dual 150 remote GPS and Harry's Pro Latimer.

DrCGuerra

Great. I just need to learn how to use Harry's Pro Laptimer. I am using VBox Sport but the results should be the same using Harry's. Thanks.

917k

Awesome: great tip. Ordering now. Thx for asking OP

Jabs1542

I use Track Addict along with Race Render, similar to Harry's but it allowed me to test it (free) with my GoPro before committing. I also use the OnPoint DME reader.

Take care getting all of this sorted out. The phone can only handle one wifi and one Bluetooth connection. I'm using the OnPoint to send vehicle data to the phone via Bluetooth, and the phone controls the GoPro via wifi. The phone itself becomes the control hub while also providing GPS data.