PBS brakes
hi I have  bought a mk4 ex Clio cup car that runs a sq7di ecu I am looking to get the ecu  wiped and unlocked but wanted to know where or how I could get it remapped and working again after unlocking as the ecu also runs the gearbox can you help 
many thanks 
Chris 
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littleozfella
Hi Chris.
         I am not sure if I am 100 correct in saying this but I think you will find that this is a Renault Sport ECU (Purple in colour)  I am sure that all support for this ecu must come from Renault Sport, not Cosworth. In this case, I am sure from my experience with Marelli Renault sport ecu's that they will not open or give access to this ecu. You would need to email  rob.fisher@cosworth.com to get a better answer on this or contact Renault sport directly.

cheers..
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PBS brakes
Thank you I will send them an email 
do you think if we  bought a new ECU SQ7DI from cosworth would that plug into the Renault loom and work with the dash or would the dash also be locked by Renault 
thank 
chris
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littleozfella
PM'd
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BarryRabbitt

In a similar position with a 2013 Formula Renault Single Seater. Happy to buy a new ECU but starting from absolute scratch is a worry. 


@PBS Brakes - did you make any headway? 

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PBS brakes
No not really and have gone right down the rabbit hole with this even if I buy a new ecu of the same make there is no guarantee it will work properly and will cost about £4K to build a map from the ground up 
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littleozfella
As in my email, this ecu is owned by Renault sport, please don't feel like Cosworth or Distributors don't want to help you, contractually we can't. Cars fitted with a French/Italian ecu have the same issues. The eci is a Renault sport product.
Cheers 
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BarryRabbitt
PBS brakes wrote:
No not really and have gone right down the rabbit hole with this even if I buy a new ecu of the same make there is no guarantee it will work properly and will cost about £4K to build a map from the ground up 



Thats disappointing. Sounds like we are both in an identical position. I’ll keep searching for a solution at my end. Not very hopeful though. 
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PBS brakes
  • littleozfella
    My cosworth dealer has been very 
    helpful 
    but it is just a very expensive 
    job with a new ecu and mapping time 
    with no 100% guarantee of the out come 
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