Discovered something new, or it seems so.

Gotta be next to a wall or something that will reflect sound.

Found this in my garage

In dynamic mode with RPM's down off high idle, the exhaust note sounds deeper in REVERSE than in PARK.

Engaging reverse then hitting the homelink button appears to provide more sound.

Seriously - try this yourself

Am I crazy?

Is it my imagination?

BEST !

RWS

 

Does it sound deeper in Drive than Park? Could just be Park that's quieter, since the car knows it's not going anywhere. I have no homelink button so can't comment on that.

 

Seems to sound better in R and when i set the remote to kill fuse 15 WHILE IN REVERSE I get more pops, bangs and barks.

Can anyone verify ?

BEST !

RWS

 

Thunder jet I get a similar result. By the way, I have fuse 15 pulled all the time, but would like to reconsider the remote like you have. Please direct me to the post which discusses the remote and how to connect it? Never mind I found it in this thread.

 

go to the first post in this thread and read everything forward.

 

Thanks for all the detailed explanations guys. I have a ‘24 P450 ‘vert and pulling the fuse certainly put a big smile on my face. But during these cold winter mornings in the UK I wanted to idle and melt the ice a bit more quietly so I replaced the fuse temporarily. It would be great to switch to fuse out mode without lifting the bonnet so I’ve ordered the bits and will report back when my emylo arrives from China. But I understand the technique from the very helpful diagrams that you guys posted so I am confident that it’ll be all good. Thanks again.
Mark

 

Because I am considering putting together one of Jag Bass' remotes I checked in my owner's manual for fuse box locations. To my surprise I have a 5 amp fuse in location #15 and a 10 amp fuse in location #43. In the manual #15 is labeled Active exhaust valve, and #43 is labeled Active exhaust. Anyone have an idea which one would be the correct place to install his system. Under the hood would be a much easier install but I had always understood that it was #43 thru MY17 and #15 from MY18 forward.

 

I set it up on my 24. It’s a beautiful thing. You’re going to love it. Programming it into your 3rd garage door opener button on the ceiling makes things pretty darn slick.

 

Definitely fuse 15 on the 2024s. Weird that both are labelled Active exhaust. Don’t believe that is the case in my manual.

 

Someone can correct me if I'm wrong, but I believe on the older cars fuse 43 (in passenger side footwell) is the power to the vacuum pump for the exhaust valves and fuse 15 (under hood fuse block) is the power to the active exhaust switch. Because the newer cars don't have the vacuum pump any more (and '21+ cars are electronic valves altogether), fuse 43 isn't in use for those cars.

 

I'm thinking you're right. Fuse 15 is a 5 amp and fuse 43 is a 10 amp fuse - makes sense that the higher amp would be for an actual valve where the smaller amp would be just for a switch. What throws a wrench into that is in the circuit descriptions it says "Active exhaust valve" for 15 and just "Active exhaust" for 43. Gotta love Jaguar.

 

Quick question. I’ve got my fuse tap (emylo coming tomorrow), when I take the wires from the slot that doesn’t have a fuse now, what’s the best way of connecting them to the fuse tap? In Agua’s pics it looks like a proper plug. I can seem to find such a thing.

thanks,
Mark

 

I used a Male Spade Connector, the one I used looked like this and was one I had already so was slightly too big but it was easy enough to trim it down to size.

 

Thanks very much. I’ll try that.

 

Test rig all working. Next to tidy it up and install. Thanks everyone.

 

FYI when the fuse is installed and then removed the valves on my 2016 R Coupe exhaust remain open but at about 90%.. Soooo I stick a rod in to make them open 100%. I know picky picky...

 

I put together a small video in the effectiveness of this solution:

 

Nicely done man. It’s cool that you took the time to make the video…

Just curious, when you have the Claws Out Mode engaged and you’re out and about driving around how does it compare to how your previous F-type sounded? Was the old car that much better?

I’m quite satisfied with the sound of Claws Out on my 2024, but I’m just curious more than anything. I’ve never directly experienced a v8 of old in person so I really have no tangible reference other than some videos.

My impression is that the tone is very similar, but the newer car with Claws Out has a lot less burble tune and pops and bangs. I still get some burble and pops and bangs randomly here and there, but it’s certainly not constant…

I certainly wouldn’t mind things being even louder but I definitely prefer not having constant burble tune and pops and bangs. Some of those SVRs, although awesome, would get to be a bit much for me after a while I think…I think it would get old…

All this said, I’m feeling pretty happy to have a car sounding as good as this thing does in this day and age where most cars sound like vacuum cleaners ;-) Claws Out makes it pretty awesome to me. The party is basically over for car enthusiasts in terms of stock exhausts it would seem :-(

 

Not sure how correct this is, but here goes:

The later cars have electrically operated valves, the earlier ones have vacuum operated valves. The following applies to the electric valves on my 2023 P450

1. CLAWS OUT mode will defeat the signal going to the exhaust flapper valve, leaving it locked in whatever position it is in at the time of hitting that remote.

2. Seems to me that the valves open in DYNAMIC mode, however they do not open fully under all circumstances. This can be verified by starting the car in PARK with the driver's side. next to a building or in a garage with the driver's window open and IMMEDIATELY after starting, engage dynamic mode. You can hear the exhaust open up and then immediately close up a bit. Drop it into Reverse and you'll hear the sound change. Seems louder in reverse, but that may not be accurate.

3. My perception is that engaging the claws out mode while in reverse idle mode produces a louder tone.

Perhaps someone else can confirm this?

BEST !

RWS

 

Thanks. I had the R for a short time back in 2018. Long story but I had to reject it due to a quality problem. Got all my money back in fairness but it wasn’t a great experience. Anyway, I remember it being much louder than the P450 but it’s too long ago for me to really compare it now to the claws out. I’m very happy with this solution as it’s cheap, easy to pop in and out for dealer visits and allows me to have some quiet cruising as well. Even longer ago I had an E92 M3 and I did the whole stage 2, decat, Eisenman Race exhaust thing and it was tiresome to live with. Looked much better than the stock tumour under the boot arrangement though.