Hopefully someone can take a look at these .csv files from Datamaster for me, i really want to figure out why it is knocking and what to do about it. It seems to be continuing to knock at 90-95 map and 4000-4500 RPM, these knocks trigger a KR of about 5-10* I would love any advice i can get in trying to fix these, I do have the LT-1 knock module, and these logs are from the 1994 Z28 in my signature. On race 3 i brought down the timing in blocks 90 and 95 map and 4000 and 4500 from 35 to 34 and it looks like there may have been slightly less KR, and on race 4 i brought those blocks down to 33, it looks like the KR went back up. The headerbolts are all tight and i'm not hearing any ticking or poping, all of these runs were on motor


RAR of 5 .csv datamaster files

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or individual .csv's

http://www.datafilehost.com/download-5087b4bc.html

http://www.datafilehost.com/download-9d16df54.html

http://www.datafilehost.com/download-ec3f4b71.html

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Are you running 93 octane or atleast 91? Headers tend to make more noise so it could be false. But if the motor is a little loose or the rocker arms need adjusted that could be the cause. I never had datamaster before I replaced the knock module with the lt4 one so I can't say for sure if it would help. All I can say is I ran one in my car for about 6 or 7 years. I also detuned the knock tables with tunercats so that the ecm could not pull timing. this was about the time I started spraying the car.

Is this condition when you spray the dry shot? If so how is the nitrous plumbed? I'll look at the file in a few minutes.

 

thanx for all your help today bro, no i wasnt spraying at all durin these runs, it very well could be from the exhaust or other noise but since the knock is always at about the same map/rpm combo im thinking it may be tuning related, but ii could be way off, it was on 92 pump gas

 

here's a .rar of my wideband logs from the other night



DataFileHost - 10240804.rar

http://www.datafilehost.com/download-4b66297d.html


individual files



http://www.datafilehost.com/download-d83a08b4.html



http://www.datafilehost.com/download-a69dfc65.html



http://www.datafilehost.com/download-a6c75b97.html