I've been having a problem with knock for some time now. Can someone who knows how to read data logs take a look a this 1st thru 3rd pull and let me know if they see any problem. I don't really know what I'm looking at. I'm starting to think possible phantom knock.
Thanks

 

Put race gas in the car and then go for a rip. If the knock goes away then it was real knock.

 

All I could find around here is leaded 110. Would it be alright to run one tank of it.

 

I wouldn't run an entire tank ... just wait till it's near empty and put in a few gallons.

 

Run the car down to the low fuel light then add two gallons and test. After test fill up with 93.

If you are catless it wont matter either way. I run a 50/50 mix of 110/93 nearly 24/7.

 

That looks like real knock to me.

I take it this is on 93 octane? Trying to run 12* at 5500 rpm? 15* at 6500?

What AFR and boost level?

Try pulling 2-3* across the power band and see if the knock goes down. If it does, then it's real knock. This test is cheaper and easier than putting race gas in.

 

This is only at about 21 psi. I'm not sure of the afr, haven't hooked up the wideband yet. I'm having it tuned via the Internet but my tuner hasn't got back to me yet. I don't want to mess with the tune I really don't know what I'm doing. I'm running 93 octane . I have just about all the bolt-ons. Green, cams, injectors, tbe, walbro, ........

 

his issue is near the 6,000RPM range. Definetly decrease 2* timing from 5.5K-7K. my hunch is he has aggresive MIVEC uptop, I would put your 5k-7.5k stock mivec back in until the knock goes away then add more mivec.

i know 6,000RPM was probablamatic with me also, to much mivec and my car did not like it at all.

 

I got a conservative tune till I get my wideband installed and I'm still getting knock . This is only at about 21psi. Here is a log. What do you guys think. Thanks

 

Is this ^ an acceptable amount of knock till I'm ready to have my tune finished?