So with the high load tune there were two logs:Steve @ VersaTune wrote:The first log from the high load tune. It had no knock, but the load values were well below the values in the tune.
- Data log - 2016-08-23 12.27.32 which had no knock;
- Data log - 2016-08-23 12.30.52 which had even more knock than the last one and which I missed at that time because my eye was caught by the AFRs.
At this point I would not go back to the high load tune, I'd rather go back to the Base 93/98OCT tune.
The tune I've sent is some where in between but there's still a lot of knock even with smaller commanded loads since JohnnyMPS doesn't have upgraded fuel pump internals and one of my concerns with the initial two logs was that in the second log between 4700 and 5400rpm the fuel rail pressure was below 1600psi. At least now the FRP is well above 1600PSI (or above 11000kpa).
However, at least with the last tune we can see the commanded and actual AFRs which now make sense together. I still don't understand how instead of the Intake Manifold Absolute Pressure PID which I've sent in a logging preset we now see "Manifold absolute pressure - AEM 3.5 BAR (kPa)", but let's just say at this point MAP is not a real concern, and we still have the boost to work with assuming that the BARO is, say, around 100kPa.
Going back to the AFRs... they are 0.5-0.7AFR on the lean side. With the Fuel Rail Pressure values in check this time and assuming that Johnny has the factory intake as the tune is set up probably there's some post MAF - pre turbo leak somewhere.
The relatively high KR and some decent timing values (remember even with the timing values from the high load tune in one log there was massive KR, and in the other one there wasn't any) usually point to the injector seals. Probably they can also be the culprit for the leaner registered AFRs.
So what do you think Steve? is my analysis kind of close?
I've also attached the last tune I've sent him is this for who wants to take a look and eventually give more insight: