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post #17 of (permalink) Old 29th March 2006
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My 2.0 IDE was definitely taken in for ECU reprogramming, and it was an official recall (I had the letter from Renault.) According to the bumf, it was for emissions related reasons.

After reprogramming, the car seemed to perform much better at high engine speeds than it had before (it used to have some hesitance between 6000rpm and the red-line that disappeared afterwards) but apart from that, it made no obvious difference.

It certainly didn't improve fuel economy, so I can't see how it would have improved emissions, unless the engine had been running rich or lean and feeding the wrong gases to the cat.
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