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I know this has been talked about but I can’t find an answer or anyone that has gone back to “original” software/tune…I have been lucky enough to have owned a 2014 v8s convertible and now recently acquired a 2017 R convertible. The difference in pops and burbles is significantly less at low rpm as I recall vs the 2014 model. I could probably remove the fuse but would rather not…nice to calm it down once a while right?! Took this pic to see if anyone can tell me if I have “newer”/quieter software…or if this isn’t the info needed happy to provide. Thx in advance
That's the software info for the infotainment system and not the ECU. There is no way to identify what version ECU software you have without a specialty tool. However, the 2017 could certainly have had the quiet patch applied as part of its routine dealer service in its previous life.
I have the VAP tune and exhaust but noticed after last year's Jag service the pops and crackles have largely gone. I'm going to have to take it to the aftermarket crowd to sort it out I think, not really happy with the sound at the moment.
Damn really…why can’t you go back? Do you have experience with this question before? Did you ask dealer or Independant shop?
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it’s just a directive from JLR. They don’t want to have to deal with all the gremlins downgrading will exposure the end user too and then have to spend extra time and expense troubleshooting. The upgrade always involves more than one system or control module solution for prior errors
Well that makes sense I suppose….appreciate that. So would you recommend removing fuse(not sure if it’s 15 or 43) or will there arise further issues by doing this?
I think it’s fuse 15 for your ‘17. F43 powers the active-exhaust vacuum pump, which only existed for MY14-15, I think. Later model years use engine vacuum to actuate the valves.
I think it’s fuse 15 for your ‘17. F43 powers the active-exhaust vacuum pump, which only existed for MY14-15, I think. Later model years use engine vacuum to actuate the valves.
And later still (MY21+) are electronically actuated.
I have the VAP tune and exhaust but noticed after last year's Jag service the pops and crackles have largely gone.
Sorry if I missed the original thread if you previously posted the details before, but are you saying the JLR dealer overwrote your VAP software and the pops and crackles diminished (why did they even touch the software, was it some overdue "service campaign" or were they troubleshooting something else)? Couldn't you just re-flash the VAP software again and restore them?
Yes I think so. So I think the patch has gone on to kill the exhaust but the performance is fine. It has definitely lost a lot in the exhaust department. I am not sure whether putting the VAP software on again rewrites the exhaust, but I think so.
I was under the impression that the procedure should be to replace the original tune before a dealer updates it, then give the new one to VAP who will reapply "your" changes and return it to you? Anyone confirm (or deny)?
I was under the impression that the procedure should be to replace the original tune before a dealer updates it, then give the new one to VAP who will reapply "your" changes and return it to you? Anyone confirm (or deny)?
Spot on, that is how it works.
Except I *think* VAP have to modify their initial tune (wot they sent you before) to restore the snap crackle pop.
Spot on, that is how it works.
Except I *think* VAP have to modify their initial tune (wot they sent you before) to restore the snap crackle pop.
This is correct. It's always a gamble bring a tuned car to a dealer unless you specifically instruct them to not apply any software updates (and they listen). Even if you restore it to the factory tune before visiting the dealer, if the dealer overwrites the ECU with new software it erases your tune AND your ECU writer is now locked from reapplying the tune (since the writer is locked to your old ECU map). You have to pay 'credits' to VAP (who pays them to the ECU writer company) to get it unlocked again (I believe VAP said it's around $300-$500 USD to get it unlocked) so you can re-read your new ECU, send it to VAP to have them send you the corrected tune. They can add more pops and bangs at any time if you wish.
Yes, Jag had standing instructions not to interfere with the tune including not to put the exhaust patch on, this was fine for at least 3 years but they seem to have killed it this year.
Perhaps the "detune" had something to do with JLR not wanting to pay for cat converter warranty claims related to excessive gas burn-off?
On a related note, federal emission standards keep tightening and might have contributed to the s/w change.
IMO, my P380 exhaust sounds fine since I removed fuse 15 (?) with some pops on start-up and occasionally while driving.
I would even replace the fuse for drives over a few hundred miles as the sound gets kind of wearing.
There are any number of cheap rice burner cars that make a lot more pops, grunts and farts than the F-Type.
The F-Type is much more refined!!
I prefer my martinis shaken, not stirred!!
So much less burbles and pops and crackles
