XK / XKR ( X150 ) 2006 - 2014

Normal fuel trim for 5.0 XK ?

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Old Dec 22, 2020 | 01:49 PM
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Default Normal fuel trim for 5.0 XK ?

About to have my 5.0 XK with 60k miles remapped ( ECM tuning via OBD2 )
and I want to make sure I do not have any injector or vacuum leak issues with my car.
I have performed a High Pressure Fuel Pump test via SDD and test was satisfactory.

My car has a resonator delete, replaced with an X pipe and a muffler delete.
my air filters are aftermarket which I suspect may be causing slight LTFT differences.
Also to note I have been getting a repeated pending code for MAP Sensor, not sure why
as I have removed and cleaned the MAP sensor and it appears to be running normal.

Could I get some input from the pros please..are my fuel trims too out of spec given the data?


 

Last edited by trkyam; Dec 22, 2020 at 01:55 PM.
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Old Dec 25, 2020 | 06:23 PM
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If you want to see if your fuel trims are off you need to do it with SDD JLR or log the entire rpm load range to see if there are issues
Can help you properly set up logging If you have an Android phone.
 
__________________
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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