performance tune xkrs
 

looking for advice/ venders for a ecu tune and a pulley upgrade for a xkrs gt with the 5.0 supercharged engine. thx

Talk to Jags Gill at ECU Tuning Group. They are members of the forum. I had their tune on my 12xk and was quite pleased with it. I have not gotten around to having it done to my 13xkr yet. Take a look at the website it is: ECU Tuning Group | We are North America's leading tuner.

Why is it whenever I call there is no answer???

Cause its a fly by night operation.
Look through the Ftype section here. You will find a gentleman named Stuart. He is out of BC- and a real pro. he is a Brit who has ex Jaguar factory techs on staff- the only way to do it.

Troll?
 

It's been 9 days since this thread was started, and no reply from the OP. Just wondering - is the OP for real or is he the NavTool troll under another name? Sketchy personal profile and spelling errors fits the troll's modus operandi. He even snookered me into replying to his other new thread: https://www.jaguarforums.com/forum/x...change-179928/

My apologies to draguarxkrsgt if you're not a troll. How about proving it by posting a picture of the back end of the 2014 XKR-S GT you claim to own, including the license tag and your local newspaper or something else to prove the date that picture was taken and that you're in Pennsylvania?

I suggest no further replies until we hear back from the OP.

Like yourself I thought it was odd that someone would be asking about tunes for such a rare vehicle

Exactly how many XKR-S GTs does anyone think there ARE in Pennsylvania? Could be a name, could be a hint.

Well I like to go fast. I didn't buy it to keep it covered in a garage. Will it effect resale probably atm not planning on selling it. Thx for feedback. I've seen eurocharge is another company that the f type folks have used as well

Show us your rare beast!


:icon_worthless:

Show me yours Stuart S and I'll show you mine.

I put the ETG pulley and tune on my 2011 XKR and the results are impressive. SERIOUS power upgrades in the 1500RPM-3500RPM range.

My rear tires have been suffering terribly as I just can't help myself.....I love the acceleration.

I can't understand the hate towards ETG. They treated me well and the tune and pulley have been installed for over 9 months and have worked flawlessly.

It the cheapest horsepower and torque ugrades you will ever do

[QUOTE=draguarxkrsgt;1662241]Show me yours Stuart S and I'll show you mine. [QUOTE]

You're very funny, and thanks for bringing back memories. The first time I heard that line was when I was 5 years old and she wanted to play doctor.

I don't have to show you anything because I'm not the one who is suspected of being a troll. And I'm not the only Forum member who is suspicious of you and why you're here. If you want to see photos of my XKR and XJ, I've already posted lots of them in multiple threads on this Forum.

You have zero credibility on this Forum until you prove that you're not a troll by posting pictures that verify that you own a 2014 XKR-S GT in Pennsylvania. Prove that I'm wrong and I'll apologize. Until then, I'm done playing your game and this is the last reply you'll get from me.

Stuart, you're in Atlanta now? Or is that location near your name out of date?

[QUOTE=ArnoldKay] Nm, I thought you were Velocity-AP Stuart..

Hi

I put the RICA Stage 2 into mine and it is pushing 630+ HP with a performance exhaust.

Chiptuning | Rica Engineering Chiptuning

Its ungodly fast - from 50-100 MPH takes about 4 seconds, but the rear tires only last about 11K miles (sigh).

Sorry to resurrect old threads but I wonder if there have been others who used Rica. Looking for feedback.

Not really. Eurocharged and Velocity AP are going to come up here more frequently. Eurocharged like many use canned tunes and several members here have had bad experiences with them not getting what they paid for, Velocity is quite popular with the F-Type owners though I can't recommend them as I had a horrific and costly experience with them and Viezu is another who have supposedly in house modified the canned tune and as they are UK based probably do have a fair bit of experience. There is another known tuner in Europe who recently posted up dyno sheets showing 700BHP/850Nm TQ with a tune on the 5 litre.

So it sounds like most of the "Jag" tuners are just reselling a tune with bolt on parts, not really tuning houses.
I was hoping someone would have a tune from a privateer race team like Apex or Emil Frey off the GT3 cars, at least to use as a tune baseline.

Anyway, I'll look at Viezu.

Thanks for resurrecting this 2017 thread. It appears that the OP was a troll, since his last Forum activity was on 10-25-2017 and he never posted photos of his XKR-S GT. His Public Profile:


https://cimg1.ibsrv.net/gimg/www.jag...0600430647.jpg

Yeah that's a real shame for us real owners looking for feedback on the various tuning offerings

This has been a very frequent discussion for the last 10 years. The market for Jaguar is just so tiny compared to Audi, BMW, Ford, Chevrolet and Dodge and nor would a Jag owner be willing to spend thousands to develop a bespoke tune unlike say someone who just paid three hundred plus grand on a McLaren where another five grand or more is pocket change.

I know for a fact Old Jaguar have created their own tunes and like I said the F-Type forums show mostly positive feedback and what Velocity offers for the 5 litre.

Apex, RSR, etc are race engineers and likely used Motec or something similar for engines what are no longer stock in fact little about those cars is stock,

I tried and got refunded. Traction control was working weird (car was jerky) and I was not able to get any fix for that issue. But they have a good reputation and they claim many people have used their soft (in XKR).
From the customer service perspective I could not complain. We both invested a lot of time to make it happen, but it didn't...

And figures provided above (50-100mph in 4 sec) are rather unrealistic. I had around 8.5 on their soft for 100-200kmh, so maybe 6-7 sec 50-100 mph.

But definitely you will find car faster after their soft. The only question will be if it works okay on your car or the way it worked on mine...

Thanks for the feedback @tmich. Traction control acting weird sounds odd but seems like the ECU using brakes and TC system to adjust unexpected wheel speed. I imagine that might be more evident on the XKR-S and the eDiff. Any Jag techs care to comment?

Frankly I think that ECU and maps in my car were slightly different vs other Jags with 5.0s/c which they coped with and maybe they changed something in wrong maps.

My learning was - make it with someone local, who can ride your car after a tune. Their toolkit (isoftloader) is great (2 min and you have tuned soft, another 2 min and you are back to stock with all errors erased). But it is a little tricky when you are communicating over email trying to diagnose a problem. Which btw was not to be captured with a simple obd2 logger, as all parameters were absolutely okay (but car was heavily "braking" to get more "grip" when you are trying to accelerate).

So - you can try, maybe it will be fine for you (see above there are positive opinions), but be aware that it may go other way round.

But to underline - no one made any problems with a refund etc. So you are safe, just a matter of your time.

ps. I don't know if they have any dealers in the US or you need to get it from NL. If so - can image that shipping they staff back and forth can make a huge bill for an entire operation.

There are a couple guys at least in this forum that offer tunes that are supposedly quite good.

I shall not name names as to not show preference.

It isn't the most accurate of tools but mine does it in under 5.

https://cimg1.ibsrv.net/gimg/www.jag...6283c58859.png

Latest Xfr customer tuned
https://cimg1.ibsrv.net/gimg/www.jag...0183435161.jpg

Pretty sure “under 5” was referring to 50-100mph

To be precise- he said "about 4 sec" (50-100mph).

@Alex
0-60mph in XFR <4sec - never driven one of them, so don't know their traction, but it is hard to believe that it goes faster than XKR, and I have never seen <4 for XKR. Not due to power, IMO due to traction and RWD.

In general question is about a measuring tool. I use app with an external GPS antenna (10mhz) so it is rather precise (~300usd set), but still it makes error (e.g. have records like 0-100kmh below 3 sec which is b/s). I'm only convinced with repetitive results, not one offs.

My quote is in regards to u102768 stating his does 50-100mph in under 5 sec (not 0-60mph as Alex is referring to) you tool

Mine will do it in less than 4 seconds, 3.74 is the best I have seen, but that is for a perfect launch. Generally it is low 4s for the reasons you state.

50-100mph or 100-200km/h is a much better indicator of power and the 1/4 mile gives a better indication than the 1/8 mile.

How much did your car on a dyno and what is your 100-200kmh time?

Interesting for me, as I have never been close to 3.99 (I think ~4.3 is my best on new, high end 295 rear tires).

7.6 100-200, 197.7kph trap speed at 1/4mile, 682hp/850Nm
0-100 is 4.4, MASSIVE traction issues up to 130-140kph.
However i have diffrent rear diff ratio (2.56 vs 3.31 on xkr) and a bit more weight (2160kg) :)

I seem to recall that Jaguar listed a 4.3 sec 0-60 time for the 5.0l XKR in their sales specs.

Can imagine 100-200 in 7.6s with almost 700hp. It's 100hp more vs mine.

But still cannot imagine <4s 0-100kmh in XKR, and your figures confirm my scepticism.

Yep, the main problem is a traction, it's almost impossible to launch it with a that amount of hp/torque, even with 2.56 rear diff (actually less power to the rear wheels). It's still possible to limit torque on a low end to make things easier, but with that mod the car won't forgive you early upshifs and you'll have to rev it all the way to get a decent acceleration (been there).

I lose traction easily at half throttle from 60-70mph :) 255 and 3.58 final ratio. My tech made simulation fot the next summer setup - we we do all the things tourque should be over 1000Nm from 3500rpm and max 1075Nm. Gentle British saloon :)

I've had a 295 PS4S, they can't withstand a traction. For a next season i've got a set of semi-slicks and will break a 1000Nm too ;) For now a peak torque starts from a 2500 and lasts till 6000, so far no problems to have a 1000 in that area. Yep) Nice and long british sallon with basic bolt-ons and no cheating (nos or watermeth) :)

You're referring to the 5 litre XJ, not the 4.2 XKR, right?

Hi
I posted about the RICA tune on my 2013 XKR
I bought the car new and it took them 3 tries to get the software right.
The first download was horrible - the throttle tip in was virtually impossible to control and unusable - the "jerking" problem people are referring to.
The second download solved the throttle tip in problem but basically unmasked a problem with the E-Diff.
I've been running the third download for 7 years with no problems. The whole process took about 6-8 weeks as I recall.

It should go without saying that the Stage 2 version includes a smaller pulley to increase the supercharger boost, and the ECU map requires that.

The whole point of my statement about the 50-100mph time was that, as others have noted, the car doesn't have launch control and obviously isn't AWD, so when you shut the traction control ALL the way off, you just can't use the horsepower from a standing start - you have to be going 40-50 mph for there to be enough grip without any wheelspin to hook up under full throttle. I haven't done a run with an electronic timer, but stopwatch timer showed sub-5 seconds 50-100mph when I posted my comment..

I'm curious now to see what an electronic timer will show and will try it next year (car is already off the road for the winter here in New England) . Frankly though, it scares me to push the car over 100. I find that when accelerating under full throttle through 110 the front end starts feeling very light, and it would be very easy to lose control. Not sure if true, but a UK Jag engineer told me that the hood vents on the XKR are designed to relieve underhood pressure for this reason.

I don't profess to be any kind of expert here, just relating my experience..