Interesting. Do you remember Steve mentioning anything about the knock count/control on your tune as he was adjusting it over the few weeks of logs you took?Take a look at this:
Interesting. Do you remember Steve mentioning anything about the knock count/control on your tune as he was adjusting it over the few weeks of logs you took?
Thanks for the lengthy response, that's exactly what I was looking for. I'm looking forward to getting mine tuned by him!NOTE: (I'd noticed the high knock count during logging for Rev 3. Was going to mention it if the counts didn't come down but he mentioned it before I did.)
Rev3 log reply:
Looking over the datalogs, found some smoothing and AFR improvements, we are making progress, changes below:
Rev4: Things are coming along well here, we had to make a few adjustments here for better trims so less hesitaiton on/off throttle and a bit more response as a result, but looking good, it will feel more refined now with, both PT and WOT starting to dial in, some good power gains again, updated ignition for lower knock counts too, great work on the logs again
Lets do another set of the same logs here please
Wonderful. I'm glad you mentioned the knock count. I saw it when I peeked at the log and started to panic. But then remembered that I'm in good hands and decided to not even mention it.
I'm guessing with the changes being made I'll see the knock count go down as we progress through the Revisions?
Thanks again Steve!
That is correct, it should slowly come down, I wish 9thgens has knock sensitivity tables but they do not. A stock car typical does about 1 knock per minute of driving, so very normal to have some. A 30 minute log on a stock cart with a stock tune will typically yield around 30 knocks.
In this case the counts will eventually be much lower as its tuned, but there will will be a few knocks from time to time. This is so it runs a bit more advanced ignition at cruise, for best MPG and as we set the tune right on the knock threshold for best performance (but not pushing it past the threshold continually like the stock tune). Another factor is that on 9thGens there is no knock sensitivity tables to adjust (at least not available to us) like on the 8thGens and other platforms. Normally when modified we decrease the sensitivity to account for louder parts (intake, pulleys, suspension rattles etc) just so we see only genuine counts. But as we can’t on 9thGens they will naturally have more knock counts then other Gens, just because we can't dial out the false ones
As long as the counts are randomized its completely normal, even the occasional count in the midrange (5-6k) at WOT is normal on 9thGens as we tune for peak cylinder loading via cam angles in that area, so while the timing will self correct, it will constantly try for 20-26 degrees of timing, with the occasional knock at 18-19 degrees there.
Hope that helps
Absolutely. Nothing but a copy pasta from my email, and I feel like it's some good info to get out there.Thanks for the lengthy response, that's exactly what I was looking for. I'm looking forward to getting mine tuned by him!