Checking the long & short term trims vs actual mixtures is basic stuff - Need a decent scan tool & accurate lambda meter.
There are a variety of things that can be the cause so targeting though testing so that actual problem can be solved rather than throwing money at a guess.
& tuning the car before the issue is solved may also be wasting money.
The K-pro can be good a diagnostic tool is you have access to one though.
- Check knock sensor output & function
- Check long & short term fuel trims
- Check Vtc cam command vs cam actual (early stages of vtc sprocket failure also sound like pinging)
Other things that may help are new fuel filter & cleaned injectors, but that also may make no difference.
Once the problem is correctly identified though, it can then be solved & after that, yeah, a tune would be worth it.
Hope that helps
Awesome dude. Thanks heaps for the info. This is great.
To be completely fair to Honda, modifying the engine at all will render the knock control logic false. Do you have confirmation that your sensors are operating within service limits when it was on the dyno and "knocking"?
but i have noticed a click click sound or something similiar of a knocking sound...
and from what ive read on the decription on the first post.. im assuming its that pinging sound, but ive always just ignored it! lol
i noticed the sound first happened right after i installed my PLM headers and i thought it might be the sounds just bouncing off the headers
i just got my hasport engine mounths installed like 2 days ago and while i was driving today, i was trying to hear the sound again but i cant hear it anymore because my car is alot louder now since the mounts got installed
OW,,, I Thing Same
Adrian @ SAS " When dyno check was done, did you have your long & short term fuel trims checked together with actual mixtures?
Sounds like your primary O2 sensor is on the way out.."
Originally Posted by Adrian @ SAS
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