Quote Originally Posted by jbowly View Post
With a lot of letters to the media about the same engine noise we are all experiencing finally Honda have caved in and given me an answer. It is as follows... Software fix is reputedly available mid February

Dear John, we appreciate that you are concerned about the presence of an engine operational sound as it detracts from your overall enjoyment of the vehicle and we wish to again reassure you that this condition will have no impact on performance or engine reliability. We have been working closely with the technical division of Honda Corporation in Japan and following extensive investigations we can confirm that the condition you are experiencing is not that of “pinging” which is known within the industry as “pre-ignition”. The condition that you are experiencing is a combustion sound taking place after the programmed ignition, namely a “post combustion noise”. As this condition takes place after the programmed ignition and with the piston on its downward stroke, there is no detrimental force or impact within the engine in your vehicle. Therefore your engine has not sustained any damage and we are happy to offer you a guarantee on the engine while you are the owner of this vehicle as a way of reassuring you of our confidence that no wear or damage is occurring to the engine or associated components.

We trust this advice from the manufacturer clarifies the matter.

Regards
Joe Gelsi
Customer Relations Manager
Honda Australia Pty Ltd

Hmmm I would like to see what this fix really is. Just glad they have "identified it" though I have large doubts that "post ignition" does not cause any damage. So what they are trying to say is that the ECU tune is FUBAR, we will adjust it to use more fuel, retard timing or a combination of both??

The higher CR may have an effect, and 0.5 CR is a large variable, but can easily be adjusted with a head gasket, alot turbo engines get thicker/sandwich head gaskets to lower CR to run more boost, at the detriment of lower down torque at times though, but the benefit is less chance of detonation due to AFR's being too low, especially if running higher octane fuel...

I am not holding by breath for end of Feb, more like end of March if the Honda dealer is anything to go by???