Performance upgrade
#1
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Hi to all
Recently just purchased my 2007 XKR lovely car so far .Has any of you done the upgrade on the supercharger pulley ? Spoken to a Jag specialist yesterday who advised its not a worth while upgrade for 10% gain also the bearings can let go on the charger he has seen with more stress doing this he advised just a cat back exhaust is the most popular upgrade .
Recently just purchased my 2007 XKR lovely car so far .Has any of you done the upgrade on the supercharger pulley ? Spoken to a Jag specialist yesterday who advised its not a worth while upgrade for 10% gain also the bearings can let go on the charger he has seen with more stress doing this he advised just a cat back exhaust is the most popular upgrade .
#3
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Had mine done and went for 10% 2.5lb pulley,
The snout of the supercharger had to be filed down by 2mm all round for the small pulley. I bought the pulley of powerhouseuk. They told me it could be fitted without removing the supercharger , but it is impossible to get a good job done this way and would have caused a mess.
The guy who done it for me (Ken) took the supercharger off to do a professional job. The coolant had to be drained and throttle body taken off and another few pieces. The supercharger belt still fitted when the work was finished.
I had mine remapped as well by Black Code Remapping.
The only mod i had was the performance exhaust. Top end is near the same ,but lower end is astonishing. The slightest touch of throttle and it's gone. Seems to change up the gears quicker and smoother. The power up to 3,000 revs is massive. It's just hard to describe, simply amazing.
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The snout of the supercharger had to be filed down by 2mm all round for the small pulley. I bought the pulley of powerhouseuk. They told me it could be fitted without removing the supercharger , but it is impossible to get a good job done this way and would have caused a mess.
The guy who done it for me (Ken) took the supercharger off to do a professional job. The coolant had to be drained and throttle body taken off and another few pieces. The supercharger belt still fitted when the work was finished.
I had mine remapped as well by Black Code Remapping.
The only mod i had was the performance exhaust. Top end is near the same ,but lower end is astonishing. The slightest touch of throttle and it's gone. Seems to change up the gears quicker and smoother. The power up to 3,000 revs is massive. It's just hard to describe, simply amazing.
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gh27 (04-26-2016)
#5
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Anyway if you're still in 2 minds, the guys i bought the pulley of Powerhouse UK can supply and fit and tell you anything you want to know.
Powerhouse Automotive | Jaguar Supercharger Pulleys
#6
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I doubt there is much data out there for how many supercharger bearings have failed from the increased RPM from a smaller pulley, especially from Jaguar. In theory, the more use something has, the faster it will wear, but I have not heard of anyone here on the forums with issues from this mod. Also look at Corvette forums, they have the same super charger we do and there are way more Corvette owners with this mod as well.
#7
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Before you do any mods. Get a dyno reading. It would be interesting to see how much of the original power you have. If nothing else it will validate the mods.
One of the cheapest and most essential mods overlooked is cleaning the system. Would you believe in average cars you can get 4 to 10hp just by cleaning the MAFs
One of the cheapest and most essential mods overlooked is cleaning the system. Would you believe in average cars you can get 4 to 10hp just by cleaning the MAFs
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#8
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Car is booked in with Powerhouse next Thursday as they are only 20 miles away for the 10% pulley
Had mine done and went for 10% 2.5lb pulley,
The snout of the supercharger had to be filed down by 2mm all round for the small pulley. I bought the pulley of powerhouseuk. They told me it could be fitted without removing the supercharger , but it is impossible to get a good job done this way and would have caused a mess.
The guy who done it for me (Ken) took the supercharger off to do a professional job. The coolant had to be drained and throttle body taken off and another few pieces. The supercharger belt still fitted when the work was finished.
I had mine remapped as well by Black Code Remapping.
The only mod i had was the performance exhaust. Top end is near the same ,but lower end is astonishing. The slightest touch of throttle and it's gone. Seems to change up the gears quicker and smoother. The power up to 3,000 revs is massive. It's just hard to describe, simply amazing.
__________________
The snout of the supercharger had to be filed down by 2mm all round for the small pulley. I bought the pulley of powerhouseuk. They told me it could be fitted without removing the supercharger , but it is impossible to get a good job done this way and would have caused a mess.
The guy who done it for me (Ken) took the supercharger off to do a professional job. The coolant had to be drained and throttle body taken off and another few pieces. The supercharger belt still fitted when the work was finished.
I had mine remapped as well by Black Code Remapping.
The only mod i had was the performance exhaust. Top end is near the same ,but lower end is astonishing. The slightest touch of throttle and it's gone. Seems to change up the gears quicker and smoother. The power up to 3,000 revs is massive. It's just hard to describe, simply amazing.
__________________
#9
![Default](/forum/images/icons/icon1.gif)
good stuff, i would also organise to get the car remapped after pulley change, i'm sure you can locate a reputable agent near you.Doesn't take long and could be done at powerhouse uk. Then you'll see an unreal difference.
#11
#12
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Just organising the remap also the exhaust from the cat back bespoke one or the elite rear box only should all be done in the next two weeks .I understand what your saying about dynos but in my experience they are a lottery been on many over the years with my cars and seen some very strange things with maps and mods .In my opinion its how it drives on the road .
#13
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Just organising the remap also the exhaust from the cat back bespoke one or the elite rear box only should all be done in the next two weeks .I understand what your saying about dynos but in my experience they are a lottery been on many over the years with my cars and seen some very strange things with maps and mods .In my opinion its how it drives on the road .
#14
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Whatever you do with the exhaust, get an x-pipe or crossover in the center section, probably the most beneficial exhaust mod you can do besides a 100/200 cell catalyst.
https://vimeo.com/163952873
Check the 40 second mark in particular!
https://vimeo.com/163952873
Check the 40 second mark in particular!
Last edited by Cambo; 04-28-2016 at 07:04 AM.
#15
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Whatever you do with the exhaust, get an x-pipe or crossover in the center section, probably the most beneficial exhaust mod you can do besides a 100/200 cell catalyst.
https://vimeo.com/163952873
Check the 40 second mark in particular!
https://vimeo.com/163952873
Check the 40 second mark in particular!
#16
#17
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gh27 (04-28-2016)
#18
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powerhouse (04-28-2016)
#19