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ECMlink Im lost 3rd gear pull Knock..

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mizak82

10+ Year Contributor
173
1
Jul 24, 2010
palm beach, Florida
I have the bases covered I believe.. I do have a vented catch can from the VC..

I turn the boost up, I get a lot of Knock.. Now I dont know if its lack of fuel which I doubt because its at 10.8 on my WB on my pulls.. Perhaps my timing maps are out of whack..

I turned the boost back down to 12 lbs and no knock is present..

On the quest to tame this thing, but its my first turbo car and I dont know what ideal is with its power band..


any suggestions, be kind..
 

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  • log.2013.01.26-01 WOTknock.elg
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I have the bases covered I believe.. I do have a vented catch can from the VC..

I turn the boost up, I get a lot of Knock.. Now I dont know if its lack of fuel which I doubt because its at 10.8 on my WB on my pulls.. Perhaps my timing maps are out of whack..

I turned the boost back down to 12 lbs and no knock is present..

On the quest to tame this thing, but its my first turbo car and I dont know what ideal is with its power band..


any suggestions, be kind..

i hope someone has answers cause im having the same issue.
 
Your timing is OK for now make sure you are running good gas at least 92oct if you can or higher. Try leaning it out a bit and see if the knock goes away. Go in small steps, try 11.2 from 11.0 afr. If that does not help try different gas. Also when doing a log try to do 3rd gear and take it from 2k -7k at wide open throttle(providing you have no knock). I would set the knock CEL on the link at no more then 3deg.
 
Your wideband is flat lining at 10.8 which gives you no indication of what your AFR really is. You can't dial-in your airflow until you know the AFR exactly.

If you don't want to reconfigure the wideband signal, try to get your AFR above 10.8 so you can start logging something meaningful. Try playing with the sliders at the proper MAF frequency (Hz) levels (looks like they need to be lowered a tad, starting from 800hz up).

That said, it could also be crappy gas, rich knock, or something more sinister :mad:
 
^ What he said. Fix your wideband, why it is flat lining at 10.8, I have no clue. But as stated above, could be rich knock, crappy gas, tune or combination of the three.

I would fix your wideband, then mess with your maf sliders to get your maf dialed in.
 
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