D5 tuning box

[Ringthane]

I wasn’t disappointed. The performance was about the same, straight out of the box. Polestar improved it, but not in the pure performance department, just the overall feel of the car.

The biggest difference is in the quality. They are worlds apart.

[MuscleFlex]

Originally Posted by Ringthane

I wasn’t disappointed. The performance was about the same, straight out of the box. Polestar improved it, but not in the pure performance department, just the overall feel of the car.

The biggest difference is in the quality. They are worlds apart.

are you saying you have both Tuning box AND Polestar on your car??

[Ringthane]

No. Just Polestar. I was responding to XSAAB’s post.

Mine is in warranty, so wouldn’t put a box on it.

[Quacker]

Originally Posted by xsaab

Very shortly I am swapping my XC60 R Design D5 Polestar for a new XC60 D4 AWD Inscription Polestar.
Reading and comparing the specs for the two vehicles I am afraid that I am going to find the new car a disappointment (buyers remorse perhaps)
reasons to buy to get EU 6 exhaust and AdBlue. So I am avidly reading up on ways of perking up the D4 to something a bit closer to the D5 in performance.

Apart from the badges on the car what differentiates a current D4 to a D5, is it just the engine management system?

Any thoughts please.

D5 has twin turbos and an air compressor that shoots a pulse of air through the smaller turbocharger to speed up engine response from low revs. So there is quite a bit of difference. However, don’t rush to modify something you don’t know whether its performance is satisfactory or not

[225]

Originally Posted by Quacker

D5 has twin turbos and an air compressor that shoots a pulse of air through the smaller turbocharger to speed up engine response from low revs. So there is quite a bit of difference. However, don’t rush to modify something you don’t know whether its performance is satisfactory or not

I agree. Drive the new one and see how you get on as it will still be a nice new car, once run in and has a few miles under its belt you may not feel the need.

[VO11VLO]

Originally Posted by 225

Blimey only posted to let others know that a box was available for the D5 now..
Yes I am well aware of implications of fitting one as I was in the last 2 cars I had them on.
Yes my insurance has been informed.

They are not for everyone as people may be happy with the standard power of what ever flavour of car they drive, I was not.

Anyhoo, I recommend them and makes the big barge a little more fleet of foot.

Does your car have polestar?

Did you fit the box yourself, and if so how difficult was it?

Did you go for the bluetooth app control or not?

thanks

[Berkshirebob]

Originally Posted by Quacker

D5 has twin turbos and an air compressor that shoots a pulse of air through the smaller turbocharger to speed up engine response from low revs. So there is quite a bit of difference. However, don’t rush to modify something you don’t know whether its performance is satisfactory or not

I was surprised to read the D4 also has two turbos..

The Powerpulse only works in the lower gears so the extra 40ish bhp must come from different components/bigger turbos as when mapped the D4/D5 still achieve different outputs.

I’d love more ‘go’ in my D4 but this is the first car I’ve had that I’ve not tuned at the first opportunity.. something about the lazy, relaxed feeling of the car that makes me think the benefit from tuning will be lessened.

Plus it’s not even mine - it’s leased, and I’m scared something will go horribly wrong!!

If it does happen it will be mapped. Just my opinion, but I wouldn’t touch a tuning box if it was given to me. The prices they now charge are comical, probably because there’s a growing market of people being fooled that you can fit one of these and simply remove it if it all goes pear shaped.

[XC90Mk1]

Originally Posted by Quacker

D5 has twin turbos and an air compressor that shoots a pulse of air through the smaller turbocharger to speed up engine response from low revs. So there is quite a bit of difference. However, don’t rush to modify something you don’t know whether its performance is satisfactory or not

The air compressor does not shoot a pulse into it. You don’t understand the basics of the system.

[Berkshirebob]

Originally Posted by XC90Mk1

The air compressor does not shoot a pulse into it. You don’t understand the basics of the system.

Does it matter? He was obviously just trying rightly or wrongly to explain a key difference.

Perhaps you can educate us (me) my understanding was along the same lines.

[Quacker]

Originally Posted by XC90Mk1

The air compressor does not shoot a pulse into it. You don’t understand the basics of the system.

I'm all for being educated by those that know better, so please do explain the basics as you see them.
Perhaps you think it blows constantly? I do look forward to your explanation and I'm sure there are plenty of on-line references you can quote.