Hi guys

I’m new to both Jaguar and the thread. I recently treated myself to an F type and love it. I went for the 5.0 V8 P450, with the plan to save a few pounds on the 550, and then have it tuned.

I know it has been done to death, however I thought I’d show my recent tune results.

It was done by DMS Automotive who have a couple of places up and down the country. I visited the West Bromwich place for my tune. It as a great team who compared to other tuner companies actually down sold what I was thinking of by telling me that I didn’t need items other companies had recommended.

In all it took about 3 hours for the work which entailed removing the ECU and having that worked on, removing the bonnet, swapping the upper belt and then the runs.

The power is insane. My only issue is still the souls from inside seems very quiet compared to other cars I have owned. I guess that’s down to the closed valves, which I will sort out when I have spare cash again.

The result is an outstanding 654hp with an almost continuous line of power all the way to the end.

Anyway my main reason for the post was to let people know that if they were looking to have it done, DMS have been going for over 25 years, and are very professional.

 

A quick and dirty way to make it louder right now at no cost: make sure the valves are open when the car is off, pull fuse 15 under the bonnet. This opens the valves permanently (disables the active exhaust switch). You'll get much more noise and volume below 3000 RPM.

 

Hi Matt

Great advice mate. Where is the fuse box haha.

 

On a serious note, I was told to have the resonators removed to give it some more sound, and a few pops. What are views on this. I have zero mechanical knowledge so I only know what I’ve read today.

 

In the engine bay.

 

Alright in the short term, in the long run I'd be looking for an exhaust. Have a listen to this from @Supersprint Sport Exhausts : https://www.supersprint.com/ww-en/sp...-r-50l-v8.aspx

These guys are pretty exxy but the sound is f***ing wild. There's other systems available, do some shopping around 👍

Hope you're enjoying the new cat!

 

On the driver's side (at least in LHD cars), under the black cover up against the lower cowl by the windshield. Remove the four plastic thumb/plug screws (careful not to drop them down beside the engine) and the cover tips out revealing the fuse box below.

 

Here you go, sample video

 

Thanks, I’ll have a look tomorrow. It will at least be a quick temporary fix before finding a nice set up.

 

That sounds amazing. Exactly like what I envision having.

 

Here's the background information for SuperSprint.
Thank you....


https://www.supersprint.com/ww-en/co...wo-we-are.aspx

 

They don't make a system for my XES, unfortunately. The sound in these videos makes my dingle tingle so much that I took the time to price up two options: 1) shipping my car from Aus to Europe and back, or 2) renting an XES in Europe and having them use that to design a system and send it to me. Unfortunately both options are so stupidly expensive they're not feasible and I normally wouldn't even waste the time to get prices, but the roar in these vids is so gnarly I just had to look into it 🤣🤣

 

Go with your car to Europe. Have the work done, then go on a European tour of the best roads.

 

Awesome idea! I can hear my accountant screaming at you already 🤣🤣

The biggest problem with the shipping idea is the time, it can take two to three months each way so it could be up to six months that I'm without the car. It's actually not that crazy cost-wise but the downtime would kill me.

 

Hi Matt

i removed the fuse earlier today. When I went to drive it later on I had a parking brake fault and gearbox fault. The car wouldn’t even start. I’ve put the fuse back in and all is fine again.

I guess the new cars know if the fuse is out.

 

Is it still fuse 15 in the new cars? is there anything else listed for that fuse in the handbook?

 

Still listed as 'Active Exhaust' for MY24 cars on the digital handbook on Jag's website



I suppose there is the possiblity that its function has changed in the last couple of years in response to the continuing war against noise. I'm sure I'd read either on here or the UK forum that it works OK on MY21 cars at least, so if it has changed then it's a very recent thing.

 

Are you sure you had #15 out? Should be the inboard-most of the three that are in a line by themselves in the second row. This is the same layout as the 21+ cars:




If you pulled out #19 by accident (wrong end of the row), that's the gearbox fuse and would explain why you had that error and it wouldn't start. It's a 5A tan/brown fuse (the only 5A fuse on that side of the block) and shouldn't affect anything else at all since the circuit is *only* for the active exhaust. Mine is a MY23 and my previous was a MY18 and it's the same fuse. MY24 is also #15.

 

Thats a wierd looking dyno sheet, drops off at 6k when the car redlines at 6.5-6.8k.
Also all dyno plots should cross at roughly 5250!!!

 

look at the scales, the graph is scaled differently for hp and torque. I imagine they just let off, probably watching the torque curve steadily drop off.