Blow Posted March 28, 2012 Share Posted March 28, 2012 https://docs.google.com/spreadsheet/ccc?key=0Aq02xQKN52HUdFlmVmhmVEdjUGNKdzFkWlpURzFva3c Ok here is my new log with the info asked. Now I am going to look into these parameters and see what I can learn. Again this is an 05 OXT 3rd gear pull on a Cobb stage 2 OTS map with a CNT catted DP stock otherwise. Thank you for looking and I am looking forward to learning. Now off to the sites I have bookmarked to do some reading! Link to comment Share on other sites More sharing options...
Spec B Posted March 28, 2012 Share Posted March 28, 2012 You knocked a few times during that run. Every time you see Knock sum increment that is the instance your knock sensor heard knock. In this run you knocked at 2600, 2700 and 5300 RPM. Not good...especially the 5300 RPM one. Other than that, your fuel trim is a little off, but not enough to cause your knocking issues. Link to comment Share on other sites More sharing options...
bmx045 Posted March 28, 2012 Share Posted March 28, 2012 wooooo-wee. that's some knock rite thurrr. maybe a boost leak/vac leak somewhere, should cobb ots 2 map be hitting higher boost? Link to comment Share on other sites More sharing options...
Blow Posted March 28, 2012 Author Share Posted March 28, 2012 I have gotten the lean bank one CEL. Sounds like I might have a vacuum leak somewhere. I will look around on thursday and see what I can find. Thank you for the knowledge Speck B, I saw those sums go up and I was thinking that is either knock or I misunderstood what I was reading about it. Good and bad to know I was understanding what I was reading. Oh vacuum leak searching sounds like fun!!! Link to comment Share on other sites More sharing options...
05COLEGGT Posted March 28, 2012 Share Posted March 28, 2012 Something ain't right with your engine. I think its knock, knock, knocking on Heavens door... lol Link to comment Share on other sites More sharing options...
Spec B Posted March 28, 2012 Share Posted March 28, 2012 I don't think the knock is too bad...IAM (DAM) is holding at 1, and I don;t worry too much about knock below 3000 RPM. That leaves you with one knock event...not good, but not horrible either. Link to comment Share on other sites More sharing options...
iNVAR Posted March 28, 2012 Share Posted March 28, 2012 Agree with BMX. Stage 2 Cobb has a target of 16PSI I believe, and should spike to 16.5ish at times. You're barely achieving 15. Leak somewhere I would say. Also, log Mass Air Flow (grams), NOT the voltage. Link to comment Share on other sites More sharing options...
Spec B Posted March 28, 2012 Share Posted March 28, 2012 If it is knocking now at 15psi..it will knock more once you fix the leak. Keep logging and lay off the WOT runs until you have it sorted out. Link to comment Share on other sites More sharing options...
bmx045 Posted March 28, 2012 Share Posted March 28, 2012 If it is knocking now at 15psi..it will knock more once you fix the leak. Keep logging and lay off the WOT runs until you have it sorted out. Nah bra. A leak in the inlet will cause unmetered additional air to enter causing a lean condition thus knocking. I suspect a hose that is suppose to route to the inlet is astray. Astray, I say... Link to comment Share on other sites More sharing options...
Spec B Posted March 28, 2012 Share Posted March 28, 2012 true dat...lets see whats up with the leak. Link to comment Share on other sites More sharing options...
bmx045 Posted March 28, 2012 Share Posted March 28, 2012 "Yo, whats up wit all deez leaks!" seems like every tuning thread involves a boost leak or vac leak, lol Link to comment Share on other sites More sharing options...
Blow Posted April 4, 2012 Author Share Posted April 4, 2012 Here is a new log form last night. Looks like the knock sum stays consistent but is that 9 bad? https://docs.google.com/spreadsheet/ccc?key=0Aq02xQKN52HUdE1HdUdENEhFWS0zak5zVU8xZnVYenc I tightened some hoses but still not at 16.5 boost so the inter cooler is coming off in the next few days to check it out. Plus I am still getting the P0171 code. Link to comment Share on other sites More sharing options...
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