XKR-S Performance Upgrades
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From: Florida
Sorry, I meant specifically YOUR before/after dyno sheets and time slips if possible. So many others here and on other forums have claimed massive gains and 1/4 times but had no documentation to show exactly what happened. The fastest X150 on this forum have posted time slips on the 11s, no one else has ever had one in the 10s. Same for horsepower, posted dyno sheets have shown gains 25-100HP but never seen anything higher documented. IF yours is seeing 648HP AT the wheels, then you would be over 700 at the crank which is around a 200HP increase over stock.
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Joined: Nov 2020
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From: New Jersey
Yeah I’ll gather em up. Remember car is stock 462 at wheels the XKRS. To get my numbers that I’ll post. Everything I typed as to be fresh and the SC kit an actual jag part. They have 2. A full snout replacement and than a coupler kit. No disrespect to the car you mentioned but if they had the work done correctly. That’s driver error. What was their 60ft??
I have a 2012 XKR-S. This is my 5th one. 2nd S. Rest were XKR.
get tune from Eurocharged as well as the pully. You get the most gains from their tunes.
also they make a kit to replace the couplers and seals of the supercharger. It’s called a “rebuild kit” but it’s only couplers and seals. Not the snout. I gained another 16hp at wheels but replacing them.
intakes you can get on eBay. 2 K&Ns. They are installed by taking the front wheels off and pull down inner fender walls. I Gained 6hp from those
so I dynod car after each install
just with those I mentioned.
Currently I am at 648 HP to wheels & 591TQ.
and to be safe your not loosing any “stock” HP. Have your aux water pump for charger looked at, both engine fuel pumps and both engine fuel pressure sensors. If they are all good. You will have a rocket.
also rule of thumb. These cars with higher mileage over 80k. Put 0w20 high mileage full synthetic and a quart of Lucas high mileage oil additive every oil change and every 4-5 times you fill up. Throw in a Lucas high mileage fuel injector additive in the tank as well. I have 0 lag..ran a 10.2 at 1/4 and burried the Speedo numerous times..
get tune from Eurocharged as well as the pully. You get the most gains from their tunes.
also they make a kit to replace the couplers and seals of the supercharger. It’s called a “rebuild kit” but it’s only couplers and seals. Not the snout. I gained another 16hp at wheels but replacing them.
intakes you can get on eBay. 2 K&Ns. They are installed by taking the front wheels off and pull down inner fender walls. I Gained 6hp from those
so I dynod car after each install
just with those I mentioned.
Currently I am at 648 HP to wheels & 591TQ.
and to be safe your not loosing any “stock” HP. Have your aux water pump for charger looked at, both engine fuel pumps and both engine fuel pressure sensors. If they are all good. You will have a rocket.
also rule of thumb. These cars with higher mileage over 80k. Put 0w20 high mileage full synthetic and a quart of Lucas high mileage oil additive every oil change and every 4-5 times you fill up. Throw in a Lucas high mileage fuel injector additive in the tank as well. I have 0 lag..ran a 10.2 at 1/4 and burried the Speedo numerous times..
And yeah speaking of their tune. Kind of when I gained a whopping 7 horsepower from their tune and had to get my money back, they couldn't adjust a simple AFR and car felt absolutely no different than stock either . My older threads with dyno and track comparisons, all well documented
https://www.jaguarforums.com/forum/x...esults-177823/
Last edited by AlexJag; Nov 6, 2020 at 01:23 PM.
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10,2 for 1/4 is absolutely impossible. Pictures or didn't happen. Maybe with a F-Type R AWD swap of a front differential (meaning AWD car) + completely racing focused (lighter - my bad English, what would be a verb to make a car lighter) - one, light seat only, no AC etc (literally ~300kg lighter car). This is what a brand new Porsche Carrera Turbo S is doing... Come on...
Regarding over 600HP - actually mine is 590-595 (on a very harsh dyno - meaning a one where new Porsche/Vette cars are not showing +20-30 over a stock values, rather slightly below), so can imagine 620HP without cats and a very sporty cat back. I'm having a bespoke, local ECU tune, pulley (these two are main drivers), bigger IC, x-pipe, K&Ns and meth injection (almost no gains from meth, only lower intake temp). Stock cats and muffler.
One more - 591 torque looks ridiculous - but I'm not sure what is this value exactly- you mean 591Nm? With a 590HP I'm close to 800Nm. How come you are 200Nm lower with 50HP more?!
Regarding over 600HP - actually mine is 590-595 (on a very harsh dyno - meaning a one where new Porsche/Vette cars are not showing +20-30 over a stock values, rather slightly below), so can imagine 620HP without cats and a very sporty cat back. I'm having a bespoke, local ECU tune, pulley (these two are main drivers), bigger IC, x-pipe, K&Ns and meth injection (almost no gains from meth, only lower intake temp). Stock cats and muffler.
One more - 591 torque looks ridiculous - but I'm not sure what is this value exactly- you mean 591Nm? With a 590HP I'm close to 800Nm. How come you are 200Nm lower with 50HP more?!
Last edited by tmich; Nov 6, 2020 at 01:00 PM.
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Joined: Nov 2020
Posts: 25
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From: New Jersey
What do I have to gain to share knowledge from experience? Childish brotha. Simple post to a ? Of somebody. I’ve been through 5 of em and tried em all. With the 4.2s and the 5.0s. Use the info or not pal & if anybody lives in NJ here. Ray Catena has a master tech there that is an electrical genius with fiber optics being that the entire system in the car is ran through them.
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Joined: Dec 2008
Posts: 6,460
Likes: 2,582
From: Florida
10,2 for 1/4 is absolutely impossible. Pictures or didn't happen. Maybe with a F-Type R AWD swap of a front differential (meaning AWD car) + completely racing focused (lighter - my bad English, what would be a verb to make a car lighter) - one, light seat only, no AC etc (literally ~300kg lighter car). This is what a brand new Porsche Carrera Turbo S is doing... Come on...
Regarding over 600HP - actually mine is 590-595 (on a very harsh dyno - meaning a one were new Porsche/Vette cars are not showing +20-30 over a stock values, rather slightly below), so can imagine 620HP without cats and a very sporty cat back. I'm having a bespoke, local ECU tune, pulley, bigger IC, x-pipe, K&Ns and meth injection. Stock cats and muffler.
Regarding over 600HP - actually mine is 590-595 (on a very harsh dyno - meaning a one were new Porsche/Vette cars are not showing +20-30 over a stock values, rather slightly below), so can imagine 620HP without cats and a very sporty cat back. I'm having a bespoke, local ECU tune, pulley, bigger IC, x-pipe, K&Ns and meth injection. Stock cats and muffler.
Veteran Member
Joined: Dec 2008
Posts: 6,460
Likes: 2,582
From: Florida
What do I have to gain to share knowledge from experience? Childish brotha. Simple post to a ? Of somebody. I’ve been through 5 of em and tried em all. With the 4.2s and the 5.0s. Use the info or not pal & if anybody lives in NJ here. Ray Catena has a master tech there that is an electrical genius with fiber optics being that the entire system in the car is ran through them.
I assure you we are all very sincere in our request and no one here is in a game of oneupmanship.
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Joined: Aug 2020
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I will get back with a result after a tune. I started from ~515HP with a stock soft + pulley + bigger IC + K&Ns (that I can probably organize as well). So cannot show step by step increases, as I was not measuring each and every mode.
0-100kmh - ~4.3 (but honestly I haven't ever done it properly, with "hot" tires)
100-200- ~8.4 before meth, did not test afterwards
ps. I'm not a salesman- don't represent anyone and have not problems with ego.
0-100kmh - ~4.3 (but honestly I haven't ever done it properly, with "hot" tires)
100-200- ~8.4 before meth, did not test afterwards
ps. I'm not a salesman- don't represent anyone and have not problems with ego.
Last edited by tmich; Nov 6, 2020 at 01:22 PM.
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I have already asked my tuner to organize a dyno graph. Will post it early next week. Nothing to hide and no b/s it my posts.
ps. My current setup is a second attempt. Did one dyno before when running on a (well known and reputable) Dutch company's software (stage two, sold as a ~620hp booster) and dyno showed 495hp, but it was a wrong dyno not soft. It was definitely more, but it did not work properly with my car - problems with DSC / traction control (tough jerks when accelerating) and finally I got refunded and returned to stock.
ps. My current setup is a second attempt. Did one dyno before when running on a (well known and reputable) Dutch company's software (stage two, sold as a ~620hp booster) and dyno showed 495hp, but it was a wrong dyno not soft. It was definitely more, but it did not work properly with my car - problems with DSC / traction control (tough jerks when accelerating) and finally I got refunded and returned to stock.
Junior Member
Joined: Nov 2020
Posts: 25
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From: New Jersey
I have no problem posting. Few here are sensitive for some reason. I am not a tuner. I am simply a collector and driver. Not sure if you guys know but Mina gallery can do complete custom work that’s not posted as well. Chris there can make anything. He has done numerous chrome trim pieces engraved for me in my interior as well as carbon fiber louvers, mirror covers, engine panels..
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Joined: Nov 2020
Posts: 25
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From: New Jersey
How small of a pully did you go with? How many mm? You can take off the traction control completely by pushing the button once and hold for 10-12 seconds. Not sure if your aware. What compound are your tires? I am running 180. But I have to do a solid brake stand for 3-4 seconds to get em up to at least 200 degrees before
How small of a pully did you go with? How many mm? You can take off the traction control completely by pushing the button once and hold for 10-12 seconds. Not sure if your aware. What compound are your tires? I am running 180. But I have to do a solid brake stand for 3-4 seconds to get em up to at least 200 degrees before
__________________
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 112.98mph
432rwh Dyno on Mustang Dynometer , Approx 511 crank HP.
2013 XJ 5.0 SC (Alpha Jag ECU, TCU tune, crank pulley), 600+ HP, 11.6 sec 1/4th mi 122mph, 7.6sec 1/8th mi
2018 Jaguar F-Type (AlphaJag ECU TCU, lower upper pulleys intake) 10.77 ,131mph ,700hp
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 112.98mph
432rwh Dyno on Mustang Dynometer , Approx 511 crank HP.
2013 XJ 5.0 SC (Alpha Jag ECU, TCU tune, crank pulley), 600+ HP, 11.6 sec 1/4th mi 122mph, 7.6sec 1/8th mi
2018 Jaguar F-Type (AlphaJag ECU TCU, lower upper pulleys intake) 10.77 ,131mph ,700hp
Senior Member
Joined: Aug 2020
Posts: 426
Likes: 229
Standard size of a smaller upper pulley (afair- ~12% gain over stock)
Tires - decent street tires in a vg shape (continental sport contact 6, 295/30/20 rear)
DSC - trac DSC did not solve an issue - but it is already gone, new soft works well, no jerks
Tires - decent street tires in a vg shape (continental sport contact 6, 295/30/20 rear)
DSC - trac DSC did not solve an issue - but it is already gone, new soft works well, no jerks
Still let's see them 😊
__________________
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 112.98mph
432rwh Dyno on Mustang Dynometer , Approx 511 crank HP.
2013 XJ 5.0 SC (Alpha Jag ECU, TCU tune, crank pulley), 600+ HP, 11.6 sec 1/4th mi 122mph, 7.6sec 1/8th mi
2018 Jaguar F-Type (AlphaJag ECU TCU, lower upper pulleys intake) 10.77 ,131mph ,700hp
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 112.98mph
432rwh Dyno on Mustang Dynometer , Approx 511 crank HP.
2013 XJ 5.0 SC (Alpha Jag ECU, TCU tune, crank pulley), 600+ HP, 11.6 sec 1/4th mi 122mph, 7.6sec 1/8th mi
2018 Jaguar F-Type (AlphaJag ECU TCU, lower upper pulleys intake) 10.77 ,131mph ,700hp
Junior Member
Joined: Nov 2020
Posts: 25
Likes: 16
From: New Jersey
Alex. You like to stir things up uhh? Lol. There’s currently a video on you tube of a S on dyno showing similar if not more numbers than mine. I personally don’t know what they used. But was just tune and pulley. It’s a white one..