Knock Phantom Knock FIXED FINALLY!!!

[Norcalrallyist]

I just wanted to say my knock problem is overwith! If anyone is having a severe phantom knock problem heres something you may want to consider. I tried everything... If you want to take the time and look at my previous posts you'll see what i mean. Finally I got an eprom ecu and had a friend with a eprom burner write a new eprom with KNOCK ELIMINATING programming. I was skeptical at first because i had tried so many other things but it was worth it. I'm not sure where to order something similar but I'm sure its out there, keydiver chips? Anyways I just wanted to let all of you guys out there that are frustrated with phantom knock know about this maybe you will read this and have your car working properly a lot sooner than I did. I went from 40+ knock sum to practically none. This rant is officially over..

 

[ChiGGz]

How does the ECU decipher phantom knock from real knock then?

 

[Norcalrallyist]

It has two mechanisms to prevent phantom knock. First it will not accept any signal from the knock sensor unless you go over 60% throttle position or 6psi which solves partial throttle knock. Second it has theres thing called knock degradation. When the ecu sees a ton of knock it doesn't go back to 0 even if there is no knock sort of like a safety mechanism until you back off throttle I suppose. At least this is what Ive been told.

 

[ARTSUPRA]

You didn't fix your Phantom knock, YOU CHOSE TO IGNORE IT

 

[Norcalrallyist]

well i still get knock... so as long as i get the right kind who cares

 

[sonicnofadz]

Your knock is probably real. I've found that when an engine is old or improperly built, it can trigger the knock sensor (loose bearings/rods/crank/pistons, etc). The only sure way to tell if you have phantom knock is to get a wideband (and even then its not 100% accurate) which would tell you if you are at a safe air/fuel ratio. If your knocking and you are not running lean this means you have phantom knock (or something is rattling, like a bad block/head).

 

[Norcalrallyist]

My car does not knock at any rpm with zero boost. Doesnt this rule out noise.

 

[DSM90AWD]

Congrats on getting that PK delt with. People (including myself) have fought with it for years until the ECU gurus came to our aid

FYI.. Kyle Tarry gives a good explaination of PK and lists the code he used HERE

Similar code is also found in DSMLink (user-adjustable) and DSMChips

 

[sonicnofadz]

Wow thanks alot for posting that link...had no idea people were doing this!