[x300] ECU remapping

Has anyone had their ECU remapped? What sort of improvements
in power and torque does this release and what sort of costs
are involved? Just enquiring atm as I am completely skint
(even resorting to use the work vans to save money on fuel :frowning: ).–
Mark - 97 X300 3.2 XJ Exec and http://tinyurl.com/y9ewjw7
Eastbourne, United Kingdom
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In reply to a message from Speedyxjs sent Fri 21 May 2010:

from memory, I believe the discussions on this end in the
conclusion that it wouldn’t add much. searching the
archives from posts from XJREngineer (Andy) might give you
some reading.

Also there was a guy on here a few years ago that races an
XJR IIRC. Maybe using ‘‘race’’ in the search may find
something interesting, dunno for sure.

Cheers,–
The original message included these comments:

Has anyone had their ECU remapped? What sort of improvements
in power and torque does this release and what sort of costs

Mark - 97 X300 3.2 XJ Exec and http://tinyurl.com/y9ewjw7
Eastbourne, United Kingdom


Jack XJ8L 1999 70K miles
York, PA, United States
–Posted using Jag-lovers JagFORUM [forums.jag-lovers.org]–
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In reply to a message from Jack Hollibaugh sent Fri 21 May 2010:

Mark,
You could fit one of my revised crank sensor brackets. That will
give you an extra 5 degrees of ignition advance everywhere, which
improves performance and fuel economy. See my posts
entitled ‘‘Improving performance of AJ16 engines’’ for more details.
The feedback I’ve had from the +50 people using my bracket has been
very positive.–
Andy Stodart - 1995 & 1996 man XJRs and ex-Jaguar engineer
Northampton, United Kingdom, United Kingdom
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In reply to a message from XJRengineer sent Fri 21 May 2010:

Thanks for the replys.

Andy - Your bracket will be the next mod I do anyway. Just
need to raise the money :slight_smile:

I was reading an article in a magazine about remapping which
is what got me thinking.–
Mark - 97 X300 3.2 XJ Exec and http://tinyurl.com/y9ewjw7
Eastbourne, United Kingdom
–Posted using Jag-lovers JagFORUM [forums.jag-lovers.org]–
–Support Jag-lovers - Donate at http://www.jag-lovers.org/donate04.php

Hallo,could you answer to me for one question.
I have xj6 x308 .1996 year 4.0 with automatic transmissions and i have planning to put a swap with manual gearbox.
Are you still have a possibility remaping ecu from automatic to manual gearbox? The ECU number is LNA1410WC’311
Thank you very much and sorry for my english
With best regards, Dima

Hi Dimitri,
If your car is a 1996MY, then I assume it is a an X300 not an X308 (V8 engine), and is fitted with a 6 cylinder AJ16 engine. I can reprogramme these ECU. I charge £450 for this service.

Regards,
Andy Stodart

Good morning Andy.very glad to get the letter from you
Sorry for my English language ( at the soviet age in the Estonia i did not had a big resourсe for study of English😊 )
You are wright ,my engine is 6 cyl. aj16 and i have for this project of retrag 265 gearbox.
Your offer is very suit for me (he saveы me from a lot of headache)
Please give me know the adress for postage of my Ecu for you,
With best regards Dmitri

вс, 18 июл. 2021 г. в 15:09, XJRengineer via Jag-lovers Forums <noreply@jag-lovers.com>:

Is there any other repairs you can make to a 1996 XJS ECU? I had a problem with mine where it would no longer read O2 sensors, so I sent it out for repair to a place in Florida.

It seems to read the O2 sensors but the LTFTs are out of whack, and The engine will stall if I don’t have the gas pedal depressed.

I tried resetting the ECU with my PDU but it no longer sees the VIN.

I’m sorry but I don’t repair ECUs. I only reprogramme them. If you send me your failed ECU, I can reprogamme another one to the same specification for £550 + shipping.

Regards,
Andy Stodart

Good morning Andy.very glad to get the letter from you

Sorry for my English language ( at the soviet age in the Estonia i did not had a big resourсe for study of English![:blush:]

You are wright ,my engine is 6 cyl. aj16 and i have for this project of retrag 265 gearbox.

Your offer is very suit for me (he saveы me from a lot of headache)

Please give me know the adress for postage of my Ecu for you,

With best regards Dmitri

Please email me directly:-

andystodart at metronet dot co dot uk

Last question, can you change the VIN number? Obviously the VIN of the spare ECU is to my old car…can you assign it the same VIN as my current car?

Thanks.

No, I can’t change the VIN. It is also possible that you will need to have a throttle adaption and lambda sensor orientation performed, if you swap ECUs. These should be possible if you have a PDU.