Help with possible Knock issue

Z4fun

Hi,

I have a vortech v3 , stillen kit with top gunz a2a upgrade in my Z. it was originally tuned on uprev for years with 19 degrees of timing on top and no knock and had the stillen 600CC injectors and 9PSI pulley in florida and intake temps around 120 ish summer. Tuned by admin

I switched to ecutek after doing the soho intake relocation and seeing the afr's were getting lean. I re-tuned with admin the car was running fine no knock and 19 degrees on top, but injectors were maxed and startup was not good on SD tune.

Recently I upgraded to 1050cc ID injectors and re-tuned with Seb, the timing is the same but im getting possible knock in the mid rpm range but only sometimes. I can do the same pull twice and once will have knock sensor pass the threshold on one cylinder like 4 or 5 kind of random with each test and the car will pull timing 1 to 2 degrees. I will attach logs and pic.

I would like to know what is your knock thresholds and timing compared to mine, on the dyno its making almost 500 whp.

I'll attach 2 logs please let me know if any ideas, my next step is to add octane booster to test the knock.

Attached Images

knocklow.JPG (358.0 KB, 13 views)

Attached Files

Tests - 1TH1B - 2023-12-02 16-13-10.zip (76.9 KB, 2 views)