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As information on the artificial engine noise on face lift cars is a little sparce here is some measurements and the way I have gotten rid of it.
Apparently, the newer F Types come with electronic engine sound NGPTSQ which is played through the speakers. We really have come to an interesting point when a 5L supercharged sports car feels the need to play engine sounds! While the system is probably active all the time its most noticeable when the active exhaust button is pressed. As the valves don't open until 3500 rpm pretty much all the engine sounds that are heard in the cabin are being played through the speakers.
To listen to the sound without the confusion of real exhaust I pulled fuse 15 with the valves shut. So now when the NGPTSQ changes to its loud mode on pressing the active exhaust button I was sure the exhaust valves were remaining shut.
In the sound file the car (P450, 200 cell Cats) goes between idle and 2000 RPM 3 times (car stationary in neutral). First and last are with the exhaust button lit
Sound file attached
The microphone was placed next to the speaker behind passenger seat (the sound is mostly coming from the rear speakers and the larger door speakers).
Just out of interest there is the audio spectrum.
The red line is peak hold with button lit. The blue real time with button unlit both with car in idle. While there is volume increase across the frequencies the most energy is lower down to the point where is getting inaudible. Just to see what's happening at lower frequencies that are more felt than heard here are a couple of low frequency FFTs.
Exhaust button unlit
Exhaust button lit
A big 17dB increase in pressing the button. However the similarity in spectrum makes me think the system is also adding sound all the time.
Getting to this on a 2022 coupe is a little tricky. The amplifier is behind the luggage space RH trim. However the bolts holding the amplifier to the support plate screw from the wheel arch side so are inaccessible. The plate itself is held by 3 bolts one of which looks to be impossible to access without removing the parcel shelf which is a lot of work.
The connector looks like the picture above. The wire to be cut is Grey/Yellow in my car.
As this wire was difficult to get to and would be even more difficult to repair should the need arise I put a couple of crimp T connectors on it before cutting. The tails then are routed close to the luggage light so the sound could be turned back on without removing all the trim.
Anyway, after cutting there is no more pretend engine sounds coming through the speakers. When the exhaust valves are shut, and especially when the the active exhaust button is lit, its noticeably quieter in the car. The exhaust sounds crisper and more focused to the rear of the car.
With the valves open and especially with the 200 cell cats it is loud. But without the the NGPTSQ the car just feels a little more authentic.
According to something I read shortly after learning of the new sound generator in my 2022 F-Type the volume can be adjusted with the volume control. Did you find that to be the case. I currently have fuse 15 removed and listened to the driver door speaker with the car idling and not detect any sound coming from it. I may replace fuse 15 and try again just for giggles but I have never heard what could be described as in intrusive or unauthentic exhaust sound at any point with or without fuse 15 in place.
I have no idea if or how to adjust the electronic engine sounds by the volume knob, would save a fair bit of work if possible.
Probably the easiest way to check for the sound is:-
Start the car with F15 in place.
When the revs have dropped back to idle pull F15
Get in the car and shut the doors, then press the active exhaust button. Any change in sound is not coming from the exhaust!
Good info, and no doubt it will interest folks, but I have a hard time cutting wires like that ;-0
I do notice the sound you are talking about when first switching into dynamic mode at idle, but once I’m underway with the windows down I can’t honestly say I notice much of anything.
The whole concept of pumping stuff in over the speaker though, yeah, so dumb.
It would be interesting to know if there is a volume control for it for sure.
Yes completely agree. Its very slightly annoying rather than life changing and getting to the wire is a right pain.
An alternative approach might be the GAP IID system. IIDTool - Gap Diagnostic Apparently this can turn off NGPTSQ in Land Rovers and support for the F-Type is shown as being in beta.
Once the tools are available maybe companies like JLG activations will add it to the list of services they can provide. Disable Fake Engine Noise JLR Activation
One thing I missed from the initial post, I did try to track the grey / yellow wire from the amp back to the IMC (controller master infotainment) box between the seats as access might have been easier that end. However I could not see the wire. I suspect its actually coax coming out of the IMC and the shield removed as it comes out of the wiring bundle near the amp.
Hi, from the rear and the door speakers. It extends well into the sub bass frequencies so needs the larger speakers.
I am not sure if its related but LR Retrofits report that 19+ year cars have 770W amplifier fitted even if that had been specified with the basic system (X152 - F-Type). It might be the NGPTSQ system required the bigger amp. Putting my hand on the speaker grill its clear when the system is active.
Steve
An alternative approach might be the GAP IID system. IIDTool - Gap Diagnostic Apparently this can turn off NGPTSQ in Land Rovers and support for the F-Type is shown as being in beta.
Once the tools are available maybe companies like JLG activations will add it to the list of services they can provide. Disable Fake Engine Noise JLR Activation
Steve
I may have time to try this tomorrow, it worked in our Defender. FYI, I did have to purchase an adapter to exclude some of the obd2 pins for the F-Type with my iidtool, older architecture.
Hi, I am no expert but this from a search,Which exact models / trims have it varies by model year and option pack, but the following Jaguar vehicles are repeatedly shown/mentioned in official docs, dealer notes, build sheets or owner reports as having NGPTSQ / the “Active Sound” functionality:
Jaguar F-TYPE — build sheets / order docs list NGPTSQ (High) for some trims. [url alt="https://static.foxdealer.com/819/2023/05/17359487.pdf?utm_source=chatgpt.com"=https://static.foxdealer.com/819/2023/05/17359487.pdf?utm_source=chatgpt.com]static.foxdealer.com[/url]
Jaguar F-PACE — owners reporting NGPTSQ as standard/selected on recent petrol trims (e.g. P400) and forum threads about the system. [url alt="https://www.fpaceforums.co.uk/threads/fake-enngine-sound.7584/?utm_source=chatgpt.com"=https://www.fpaceforums.co.uk/threads/fake-enngine-sound.7584/?utm_source=chatgpt.com]F-Pace Forums+1[/url]
Jaguar E-PACE — dealer/spec listings show NGPTSQ on E-PACE inventory/specs. [url alt="https://bay2car.com/2018-Jaguar-E-pace-S-Petrol-black-Automatic222967789270/car139242?utm_source=chatgpt.com"=https://bay2car.com/2018-Jaguar-E-pace-S-Petrol-black-Automatic222967789270/car139242?utm_source=chatgpt.com]bay2car.com[/url]
Jaguar I-PACE — referred to in owner/forum threads as having Active Sound Design / NGPTSQ in menu/settings. [url alt="https://www.ipaceforums.co.uk/threads/sound-with-maximum-acceleration.4427/?utm_source=chatgpt.com"=https://www.ipaceforums.co.uk/threads/sound-with-maximum-acceleration.4427/?utm_source=chatgpt.com]ipaceforums.co.uk+1[/url]
Jaguar XE / XF (and other saloons) — multiple forum threads and spec PDFs reference NGPTSQ or “NGPTSQ (Low)” on XF/XE related documents; appears across the range depending on engine/trim. [url alt="https://casauto.com/wp-content/uploads/2023/04/Jaguar-XF-D200-SE-D200-RWD-2.0L-Diesel-8-Speed-AT-204bhp.pdf?utm_source=chatgpt.com"=https://casauto.com/wp-content/uploads/2023/04/Jaguar-XF-D200-SE-D200-RWD-2.0L-Diesel-8-Speed-AT-204bhp.pdf?utm_source=chatgpt.com]CAS Auto+1[/url]
I'm not sold that this system is there to pump fake exhaust noise. I believe this is similar to the Active Noise Cancellation that I have on my Corvette. And your defeat process is the same with the connection to the amplifier. In the Corvette, it's designed to suppress engine and road noise and also enhance the effectiveness of the microphone. I'm definitely not hearing fake exhaust through the speakers. It's more like the hum of noise cancelling headphones.
Folks who have installed bass-heavy subwoofers would definitely tell the difference because it attempts to mute additional "noise" or bass. I disabled it at the Bose amp in the Corvette and never looked back.
I could be wrong, but I understand Active Sound Design to be used mostly in EVs to alert pedestrians or in the case of the Dodge Charger EV, to pump in typical engine sounds.
Jaguar isn’t all that helpful in describing what it does…
DID YOU KNOW ALL NEW JAGUAR VEHICLES ARE ENGINEERED TO SOUND AS GOOD AS THEY LOOK?
That’s because they are fitted with Next Generation Power Train Sound Quality (NGPTSQ) to electronically enhance existing sound and deliver a more rewarding driving experience.
By using data feeds for engine speed and gear selection, the system carefully constructs a non-intrusive digital audio enhancement, which is played through the audio system.
The sound will be imperceptible as an overlay and will be audible through the speakers even if the customer has the audio system turned off.
The result is a JLR vehicle with effortless power delivery enhanced by an engaging sound quality that builds to an acoustic reward consistent with the vehicle’s performance.
NGPTSQ engine sounds from speakers
