XK / XKR ( X150 ) 2006 - 2014

Down on power? Dyno attached

Old Dec 22, 2020 | 09:48 PM
  #21  
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And I will note that was before I tuned the car. After the power increases, even with sticky tires, straight line launching is a wee bit tricky. Making suspension and aggressive alignment changes helped to bring it back in line a bit.
 
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Old Dec 22, 2020 | 10:45 PM
  #22  
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Originally Posted by jahummer
And I will note that was before I tuned the car. After the power increases, even with sticky tires, straight line launching is a wee bit tricky. Making suspension and aggressive alignment changes helped to bring it back in line a bit.
There is way to dial the power back in , but you really don't care about launching the car on circuit tracks
 
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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
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Old Dec 22, 2020 | 11:15 PM
  #23  
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Right, and where I feel the greatest power loss is trying to accelerate once I get past 140+ MPH, 100-140 can happen pretty fast but going from 140 past 160 seems to take forever.
 
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