Anyone remapped a 5.0 (naturally aspirated) XK?

[Garry1127]

Just wondering if anyone out there has experience of remapping a standard 5.0 Xk?

I have a few questions.

Remapping usually sharpens up throttle response (which would be nice) but given the XK can struggle with traction in the wet, does this sharper response cause any problems?

Is the 20 - 30hp/torque gain noticeable?

Any improvement in mpg?

thanks

[N6 JMX]

Hi Garry, not aware of anyone remapping a NA 5.0 litre XK, but several have undertaken this on the 5.0 litre XKR and have certainly noticed the difference, especially when combined with other tuning details.

The folks at Paramount and Elite should be able to advise you, but most of the remapping is undertaken utilising Viezu maps.

N6 JMX

[Garry1127]

I've been looking further into remapping my XK 5.0 NA.

There is an interesting variation in how much power increase I would get from remapping the 5.0 NA engine.

• Superchips 28hp.
• Celtic tuning 30hp increase.
• Remap Kings 28hp increase.
• Hyper chips 29hp increase.

But there are many others saying only a 20hp increase.

• Mallory Performance 20hp increase.
• Quantum 20hp increase.
• Avon Tuning 20hp increase.
• Chip Tuners 20hp increase.

My question to the more knowledgeable out there are these differences due to different remap software or just variations in what the different companies claim?