For those of you who have used the G56 ECU:
- How difficult was the installation?
- Have you seen a noticeable decrease in average mpg or does this mainly seem to provide extra fuel (hp) at the highest rpm ranges?
- The ECU isn't cheap. Do you think it's worth the cost?
Thanks.
Install is very straightforward in my view, as the G56 kit can be supplied with all the necessary mounting hardware for your specific car, complete the latest hex AV bobbins and appropriate brackets etc.
My MPG improved overall - particularly on a long run - as the engine can finally breath and is more efficient as a result. It's never going to be a 50mpg eco-hatch in terms of fuel economy, but over my 10,000 miles thus far, I've averaged precisely 31.30 proper MPG....
The G56 ECU is indeed properly setup for the G56 kit and works well. Having said that, the stock item will need to 'adjust' itself via fuel trims and in the main can cope perfectly well. In my case I had a rectifier fault which spiked the original ECU and Idle Control Valve, so it was a perfect opportunity to upgrade to the G56 ECU, which was also cheaper than another locked, stock OEM item. But the best reason to change in my view is to get a mappable, unlocked unit that will allow future tweaks and optimisation on a dyno, if the need should arise.
Plus of course you deal with the very helpful and affable chaps at G56 and their customer service is second to none
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