How invisible are these tunes if reverted back to stock for a dealer visit?

 

The honest answer is, we're not sure..

We've done some tuned files for official Jaguar dealers, after the flash they checked to see if the invalid software calibration code was there, and nothing was stored.. Now this is with the tuned file.

At another dealer on another car, the code stored instantly! So we're not entirely sure what needs to be triggered/logged for the code to store...

With our hand held reverting back to stock, I noticed on 1 car the dtc was there but could now be cleared and stay cleared. It was noticed at a jaguar dealer, but because the code cleared they passed it off as a low voltage issue from the clients recent dead battery. And they never asked.if the cat had been previously tuned.

With the tuned file not always showing the dtc and the code having the ability to be cleared on these particular cars when reverting back to stock, we can't give an answer to assure it's a 100% confirmed answer that the dealer cannot detect. One for sure thing is there's a flash counter in the ecu, they can see how many times the ecu was flashed. With the Jaguar dealer systems being online, they can track how many times a car has been dealer flashed. If dealer flash log shows 3 times and the car shows 10 times, red flags might come up is the supercharger snout also looks like is had a reduction pulley at a point in time and everything looks like this car had been tuned.

There's not to many ppl willing to tune there car and bring it to the dealer to see if the tuned file will show or if reverting to stock will also show..until we get enough input from clients that have our files and our programers, it's still really hard to say.

Piece of mind though, if you do revert back to stock. Everything in the hex file is placed back to the way it was. Therefore even if the dtc is stored, the manufacturer would have to prove your file(which is stock) caused an issue. There's a lot of places(companies) that put speed governors on there company vehicles, this is still classified as a tuning file but doesn't void the warranty against the supercharger blowing up or if your abs sensor stops working.

 

Waking this thread back up - Any 5.0 XKR owners living with the VelocityAP tune long-term? I'm tempted to go "Stage 1" (no pulleys, just the tune). Would be great to see any kind of dyno sheets from X150 owners.

 

I was just reading this thread a few days ago and wondering the same thing. I'm curious to see what this does to drivability, throttle response, etc.

 

Contact Stuart at VP and ask him to share any updated info. He has been extremely responsive to my relative. (3L, upper+lower pulleys, all sw upgrades including E85 tune + tranny tune...500+ HP) If Austin 7's car can survive the VP upgrade any one's can, he is not what I would call easy on machinery.

wj

 

Shortly after my post #17 here, I tried the VAP tune and after a MASSIVE investment of time, cost of the dyno and cost of the tune, we managed about a meager 25 HP increase and 45 TQ. Frustrated, I threw the two grand spent away and ended up going with the Old Jaguar tune from Cambo & Moscow Leaper here on the forums and have been running it ever since, with substantial gains in power among other benefits. They've also got a TCU tune to provide even more power and benefits. With the 5 litre, I believe they can go north of 600HP.

 

I'm with you on the 4.2 but I think the 5lt is a different can of worms. Contact is pretty straight forward.
wj

 

There's a TCU tune for the 5.0L? Is there any more info on this? I'm very curious.

 

Yes, it was offered by forum moderator Cambo.

 

The X150 and X152 utilise different ECUs. Since there’re more F-types on the market I understand VAP offer a good tune, but for the limited production X150, they didn’t develop much, I think.

 

Our tuning can be provided with a hand-held flashing tool: https://www.velocityap.com/product/j.../?currency=USD

There are no subsequent charges to update the tuning file to add our pulleys, downpipes etc. The stage files are included with the purchase of the parts.

 

On the Bosch Platform, we have several cars running high 10's with 660BHP

 

The 2010-2012 AJ133 Supercharged Engines are all on Denso ECUs. All the other platforms switched over to Bosch MED17.8.31 in 2013 or 2014 Model Year. Since the XK/R was being phased out, JLR never converted the electronics over so all the XK's are on Denso, up to 2015MY.

The Denso ECUs have far less adjustability, precision & latency than the Bosch ones so you can tune them, you can make power but you have less ability to make precision adjustments at specific RPM, load etc. JLR themselves were able to achieve significantly more power, safely with the updated ECU platform.

So yes, we have tuned far more of the later cars, because in large part there are lot more of them out there (10 model years vs 4.) We do have lots of ex some good tuning options available for the Denso cars, same as the Bosch - Griptec Upper pulley, crank pulley & tuning as well as downpipes and valved exhaust options:
https://www.velocityap.com/product/j.../?currency=USD


https://www.velocityap.com/product-c...ilters=exhaust

 

I remember this very well - we actually no longer offer tuning for the 4.2L cars because we decided internally we just don't want to work with the older Denso ECUs (these are an even older Denso type than the 5.0L) Also because there really aren't any effective ways to datalog those ECUs either. Sorry your experience was unsatisfactory, fortunately it does not apply to the 5.0L engines.

 

I really wish you had this available for the 4.2.

 

I have an 07 XKR 4.2. The more I read these threads the more I understand that the 4.2 is best left to the factory set up and the benefit is reliably and durability. If more power is desired the 5.0 sc is the way to go. It’s all personal preference. I’ll stick with the bullet proof 4.2 420hp just the way it is an smile every mile.

 

I'm, pretty new here...so I want to ask.... are you saying with a tune and a pully on the supercharger I can go from 510hp on my 2010 XKR to 600hp? If so that sounds great to me! are you products available in Canada? Do you make a full exhaust for the XKR?

 

You can go even higher than 600, some have gone to 700hp

EDIT: Velocity’s located in BC, near Kelowna.

 

Search YouTube for "5.0L Jaguar XKR Exhaust".

See also: https://www.jaguarforums.com/forum/x...xhaust-228658/

 

I hear you. We have a HUGE list of products we would like to offer, but already have to choose the ones that we believe will see the most return, and can't afford to undertake them all.