Jump to content

Knock and IAT

Tim D

Recommended Posts


Please could someone advise on a Det query on Impreza STI? 

I spent a lot of time setting up knock control (frequency analysis, det cans, inducing controlled knock etc...) and got a really responsive setup and running completely knock free.  This was in the summer months when it was 20 degrees C.

Now it's colder (freezing), on occasion, the system detects a single knock event around maximum torque (5500 rpm, 240 kpa,  see attached).  

Would you use the IAT Ign Trim table to resolve this?  It's currently set to remove timing at high IAT only (see attached).






Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

  • Create New...