5.0 NA Tune experience?
#1
5.0 NA Tune experience?
After living with my 2012 XK for a year, I find that it's almost exactly what I want in a 2nd car (at my age of 58). Classic looks, wonderful ride, a package shelf in back (seat? Not really), quality interior, great engine with a nice exhaust and reasonably fast. However, I find that the car is just too "lazy" for my taste in "drive" with a noticeable lag in response to a jab on the throttle. As a result, I normally drive in Dynamic + Sport + traction control off. However, I find this mode a little too aggressive in shift points (at least initially) and oddly, if I'm in traffic for a few minutes, the car seems to revert to "drive" mode, shifting sluggishly until I manually select drive and then back to sport, at which point it starts shifting aggressively again. Please, no suggestions to get an XKR... 385 HP is more than enough… This car is not making the best use of its power and the paddle shifters are a generation behind their time and too tedious to bother with. Consequently, I'm looking for a tune that addresses throttle response and shifting, with no expectation of big HP gains from a non-turbo engine. Has anyone had good experience with such a tune that is available in the U.S.? Many thanks!
#2
You can get a really good 'tune' by selling your XK and buying an XKR. That way you can choose which mode you like best and still have the power to do it all.
OR, two guys I know have tunes for at least the 4.2, and I suppose both have tunes for the 5.0.
Best to speak with those two guys.
I'm sure they will both post here soon.
Me, I'd go for the XKR.
OR, two guys I know have tunes for at least the 4.2, and I suppose both have tunes for the 5.0.
Best to speak with those two guys.
I'm sure they will both post here soon.
Me, I'd go for the XKR.
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#3
Well, he already stated an XKR is off the table so... yes a tune could help with throttle response also might consider resetting ECU adaptations by disconnecting the battery for a bit. The TCU could be reset as well but that requires Jaguar service software. If you are happy with the power as is, likely no need to do much else but if you want more power as well, a tune plus modifications to the car could provide more power.
#4
#5
NA cars still have plenty of torque locked up in low to mid RPMs as well as hp on top. Well worth it!
__________________
2008 XKR Convertible, (mods: AlphaJagTuning ECU Tune , 1.5lb pulley, (200cel cats( are now melted), xpipe, Bosch 001 pump, 180 Thermostat.
Drag strip : 7.9sec 1/8mi 90 MPH . 1/4 mile 12.55 at 111.98mph
432rwh Dyno on Mustang Dynometer , Approx 511 crank HP.
2013 XJ 5.0 Supercharged, (stock with Alpha Jag ECU tune), estimated power: 600+ hp, 7.7sec 1.8th mi/95mph
2008 XKR Convertible, (mods: AlphaJagTuning ECU Tune , 1.5lb pulley, (200cel cats( are now melted), xpipe, Bosch 001 pump, 180 Thermostat.
Drag strip : 7.9sec 1/8mi 90 MPH . 1/4 mile 12.55 at 111.98mph
432rwh Dyno on Mustang Dynometer , Approx 511 crank HP.
2013 XJ 5.0 Supercharged, (stock with Alpha Jag ECU tune), estimated power: 600+ hp, 7.7sec 1.8th mi/95mph
#6
I think you are expecting to much from a beautiful car like the xk . I would be more than happy with your present car . The looks alone nail it be happy. Or buy a non deplom Audi BMW or merc that are churned out by the millions that no one even looks at
Last edited by George05; 06-08-2020 at 05:09 PM.
#7
Based I what I inferred from the OP's comments on responsiveness, I reckon he is looking for better throttle response, not necessarily more power. And throttle response CAN be adjusted in the map, in fact it is often a "trick" employed by some tuners to make the user "think" there is more power. I also suggested resetting adaptations as these can some times impact the way the PCM responds.
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SEAICE (06-08-2020)
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#8
OP, am trying to figure out why your XK is trying to pass itself off as an R with its quad pipes??
OK you're never going to get the performance of an R but some things I did to my R a year ago have really transformed it
Throttle Control Unit and Pedalbox plus
https://www.diesel-performance.co.uk...5000-ccm-2/#go
TUV approved and works wonders on my car, throttle response is much improved with the pedalbox and the 'fast' pedal works in a far more responsive way
The TCU+ Gearbox flash is however just a (as far as I can tell) a hard reset of the TCU, it did however banish that 1-2 hesitation.I was experiencing permenantly
A remap of an NA engine won't give you that much more as a % compared to an SC'd or Turbo'd engine, but remember only take advice from those that have actually done it to their cars, namely a NA 5.0...lots of of forum warriors out there comparing apples with pears.
OK you're never going to get the performance of an R but some things I did to my R a year ago have really transformed it
Throttle Control Unit and Pedalbox plus
https://www.diesel-performance.co.uk...5000-ccm-2/#go
TUV approved and works wonders on my car, throttle response is much improved with the pedalbox and the 'fast' pedal works in a far more responsive way
The TCU+ Gearbox flash is however just a (as far as I can tell) a hard reset of the TCU, it did however banish that 1-2 hesitation.I was experiencing permenantly
A remap of an NA engine won't give you that much more as a % compared to an SC'd or Turbo'd engine, but remember only take advice from those that have actually done it to their cars, namely a NA 5.0...lots of of forum warriors out there comparing apples with pears.
#9
#10
#12
Thanks for the tech input. that might be exactly what I'm looking for. This car's not slow, just not as efficient as I've been used to with newer 6-8 speed transmissions. Sorry, but I can't resist not responding to your comment about passing my car off as an "R" ... Please... Having quad-tip exhaust is hardly trying to pass my car off as an "R"... Now if I bought R badges and fake hood vents, that'd be different... The big oval tips look feminine to me. Quad tips are cool and they're my generation.... I initially had them painted orange inside like Ansa exhaust from the 70s. I think they looked good, but the wife didn't like it...
#14
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Agreed. I put the XKR back box on my XK for both better sound and looks, but no one is going to mistake it for an ‘R’.
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steve_k_xk (06-09-2020)
#15
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#16
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#17
The wheels are stock from factory and NOT black
But we should remember that black wheels also matter!
Last edited by MarkyUK; 06-10-2020 at 02:01 PM.
#18
If I were in your position, I'd go for a full Larini exhaust and center section first and then a tune. Should sharpen the throttle and make the whole experience more lively and special.
https://www.larinisystems.com/collection/jaguar/xk-5.0
https://www.larinisystems.com/collection/jaguar/xk-5.0
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MarkyUK (06-10-2020)
#19
#20
My local AM - Lotus dealer is a Larini reseller so they'd have to own the issue if it didn't go as planned. They're known to be top notch stuff and had the exhaust on my Evora. They don't stock much, so the less popular sellers are made on demand.