XJS ( X27 ) 1975 - 1996 3.6 4.0 5.3 6.0

Is an AJ6 Engineering ecu worth something?

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Old Sep 25, 2025 | 08:12 PM
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Default Is an AJ6 Engineering ecu worth something?

Wondering if this modified 3.6 ecu by AJ6 Engineering worth something



 
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Old Sep 26, 2025 | 02:38 PM
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Pop it up for sale, I expect someone may be interested, and it will have value. It has several dates that help verify its good, however I've had no luck buying 2 used (working condition) ecus. Both stuffed, so I had orginal repaired.
 
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Old Sep 27, 2025 | 09:42 AM
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Who repaired your original? Always good to know
 
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Old Sep 28, 2025 | 03:15 PM
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ATC Drivetrain UK.
 
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Old Sep 29, 2025 | 06:27 PM
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Originally Posted by wardhill68
Who repaired your original? Always good to know
No idea, it's in a XJS I recently bought that has a chevy swap so don't think I'll be needing it.
 
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Old May 17, 2026 | 05:35 AM
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If you still have this ECU, I'm very interested. Contact me : deconihout8@gmail.com.
 
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Old May 17, 2026 | 02:14 PM
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I cant read the writing on the label, is it for an auto or a manual?
 
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Old May 17, 2026 | 02:20 PM
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Originally Posted by nickr76
I cant read the writing on the label, is it for an auto or a manual?
Logically, both.
ECU DAC3831 is corresponding to a Lucas 8CU unit put in Jaguar XJS early 3.6 between 1983 and 1987.

Mine is working very well and I’m hardly looking for a Lucas 8CU modified by Roger Bywater (AJ6 engineering).
 
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Old May 17, 2026 | 02:21 PM
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Very bad *

sorry for my english, I’m French
 
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Old May 18, 2026 | 05:55 PM
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Originally Posted by nickr76
I cant read the writing on the label, is it for an auto or a manual?
From a manual car; whether it works with auto I have no idea.
 
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Old May 19, 2026 | 01:56 AM
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Originally Posted by SteveM
From a manual car; whether it works with auto I have no idea.
My Jaguar XJS is a 1986 with the manual tranmission too.
She's running so badly, too poor ou too rich, depends.

I have to send and ECU to ATC Drive Train or find a ECU already passed by AJ6 Engineering (Roger Bywater).

I repeat that I'm very interested SteveM to buy your ECU : contact me by mail if you still have it in hand : deconihout8@gmail.com
 

Last edited by desesseintes76; May 19, 2026 at 02:51 AM.
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