Jaaaaaagggg XFR
Discussion
Ph1listine said:
That's so impressive, I struggle to get more than 25 mpg out of my E55. Lovely car OP - interesting stat on your 50-70 mph of 1.9 seconds, for reference Evo magazine timed the E55 (W211) at 2.1 seconds for the same increment so you have a SERIOUSLY rapid car.
Yeah it’s pretty bonkers 50-70 and I would venture even quicker now after the map but I will have to get some timing gear on and check that, I have seen 35mpg out of mine on a long run out of interest and this is what I have done over the year I have owned the car. 
Carlos24 said:
Yeah it’s pretty bonkers 50-70 and I would venture even quicker now after the map but I will have to get some timing gear on and check that, I have seen 35mpg out of mine on a long run out of interest and this is what I have done over the year I have owned the car.
Amazing stuff. I'll be at Santa Pod RWYB on Sunday 1st March if you fancy a drag race, £35 on the door.Just a map and no pulley? Did you get it dyno'd before and after?
Considering a map and pulley on the E which should take it to 550 bhp 620 lb ft.
35 mpg is ridiculously good I wonder if it's more efficient due to cylinder deactivation or more efficient supercharger?
I rememember reading the Alpina B5 used a surprisingly efficient supercharger type.
The E does 10 mpg driving hard and round town and 20-25+ on a run which is ok considering how special it sounds and feels but 35 would be so handy.
I haven’t had a before and after dyno but the butt dyno feels a considerable gain, I may at some point get it on the dyno though. They think that I should have gained 50-60hp and 80-90Nm so should be somewhere around 560-570hp and 520-530lb.ft
I would have loved to head down to the pod but I am working an awful lot at the moment on shifts so won’t be able to make it down. I am fairly tempted to head to a Vmax event if I can make the dates work this year though.
Don’t get me wrong the mpg isn’t great most of the time around town but it’s nowhere near as bad as I thought it would be! My old Impreza was much worse.
The 35mpg was on a run from north London to Lancaster and it was nice and clear with basically no stopping, I don’t think the Jag has cylinder deactivation to be fair, The 8 speed gearbox helps though as it’s only doing 1500rpm at 75mph.
The merc looks awesome, I will have to own an AMG at some point for deffo!
I would have loved to head down to the pod but I am working an awful lot at the moment on shifts so won’t be able to make it down. I am fairly tempted to head to a Vmax event if I can make the dates work this year though.
Don’t get me wrong the mpg isn’t great most of the time around town but it’s nowhere near as bad as I thought it would be! My old Impreza was much worse.
The 35mpg was on a run from north London to Lancaster and it was nice and clear with basically no stopping, I don’t think the Jag has cylinder deactivation to be fair, The 8 speed gearbox helps though as it’s only doing 1500rpm at 75mph.
The merc looks awesome, I will have to own an AMG at some point for deffo!
Carlos24 said:
The 35mpg was on a run from north London to Lancaster and it was nice and clear with basically no stopping, I don’t think the Jag has cylinder deactivation to be fair, The 8 speed gearbox helps though as it’s only doing 1500rpm at 75mph.
The merc looks awesome, I will have to own an AMG at some point for deffo!
Ah that'll be it then. The Merc needs a sixth gear, it's doing just over 2k rpm at 75 mph.The merc looks awesome, I will have to own an AMG at some point for deffo!
Whilst in Mexico I ran a quick little test, I am sure that the exact GPS speeds aren’t 100% using the app OBD fusion but it gives a comparison of the rolling speeds. Ignore the 0-60 in the right hand side which is after the tune as it was very wet so there was no traction and I was nursing the throttle so as not to just detonate the rear tyres haha... The gains 50-70 are still slightly traction limited as well so I think it will go faster still on some dry tarmac... the gain made in time is accurate between the two and is still pretty impressive!
Ph1listine said:
Nice!! Which events you looking at? I would love to do the same after map and pulley Santa Pod on Sunday!
I’m thinking maybe a Vmax event or something at elvington, they do a top speed event but I think the runway is only a mile so wouldn’t be able to go completely flat out... Gassing Station | Readers' Cars | Top of Page | What's New | My Stuff