Idle tip-in/throttle blip knock

[Nfsundrgrnd]

Originally Posted by Clipdat

Yeah. That.

It's free to sign up for an account, and it makes reviewing the data really easy. You can even set up data streams (gauges) to view on the left hand side and then "play" back the data and get a great understanding for what was going on in real time. It's just way easier to read/view than a straight CSV file.

It's also just a cool way to extrapolate the data into something that makes more sense for the uninitiated (people like me).

https://datazap.me/u/nfsundrgrnd/v4-...g?log=0&data=1

Did I do it right? Lol

[Clipdat]

Yep, I can see the log/data!

[Ultramaroon]

Originally Posted by Nfsundrgrnd

https://datazap.me/u/nfsundrgrnd/v4-...g?log=0&data=1

Did I do it right? Lol

Sure did! Thanks.


Now I have even more questions. Why is FLKC going positive under high load here? Is this real?

[tomm.brz]

yes
it is because his advance is lower than 1, and the engine is not knocking there so it slowly tries to climb back to 1, while adding positive flkc gradually
curious to see a full. throttle pull

[Ultramaroon]

Originally Posted by tomm.brz

yes
it is because his advance is lower than 1, and the engine is not knocking there so it slowly tries to climb back to 1, while adding positive flkc gradually
curious to see a full. throttle pull

Thank you! I think I am beginning to understand.

[Nfsundrgrnd]

Originally Posted by tomm.brz

yes
it is because his advance is lower than 1, and the engine is not knocking there so it slowly tries to climb back to 1, while adding positive flkc gradually
curious to see a full. throttle pull

Should have another log by the end of the day today hopefully. If not tomorrow.

[Nfsundrgrnd]

Originally Posted by tomm.brz

yes
it is because his advance is lower than 1, and the engine is not knocking there so it slowly tries to climb back to 1, while adding positive flkc gradually
curious to see a full. throttle pull

I come bearing gifts! I got the 2k - redline in 3rd at WOT log. Was coming in fast to a turn so didn't exactly hit redline but it was close enough lol. Also a smidge of launch control later in the log just to see if that's fine.

https://datazap.me/u/nfsundrgrnd/2k-...r?log=0&data=1

I still need to check the filter though, should have an answer in a bit.

[tomm.brz]

Originally Posted by Nfsundrgrnd

I come bearing gifts! I got the 2k - redline in 3rd at WOT log. Was coming in fast to a turn so didn't exactly hit redline but it was close enough lol. Also a smidge of launch control later in the log just to see if that's fine.

https://datazap.me/u/nfsundrgrnd/2k-...r?log=0&data=1

I still need to check the filter though, should have an answer in a bit.

that s not bad at all
here a new release of it for your car with some adjustment:

Stg1 V4 91oct A00C Nfsundrgrnd-2

[Nfsundrgrnd]

Originally Posted by tomm.brz

that s not bad at all
here a new release of it for your car with some adjustment:

Stg1 V4 91oct A00C Nfsundrgrnd-2

Thank you man, I appreciate the help! I'll try to get another log done tomorrow with the new tune.

[Clipdat]

When you say do a "2k to redline in 3rd at WOT" pull do you mean literally let 3rd run into the rev limiter before then shifting into 4th?

[tomm.brz]

yes at 2000 or around it floor the accell and reach redline
similar to a pull in the dyno

[Nfsundrgrnd]

Originally Posted by tomm.brz

yes at 2000 or around it floor the accell and reach redline
similar to a pull in the dyno

Got a fresh Log with the new tune. Got a couple 2k to redline pulls with some spirited driving and blips at the end.

https://datazap.me/u/nfsundrgrnd/2k-...2?log=0&data=1

Car feels faster now as well.

Also why is the ignition advance dropping as the RPM's are climbing towards redline?

[tomm.brz]

That is a question that should be made to an engineer that worked with Subaru in the fa20 to answer properly
For us normal human beings, you just have to know this is not a wrx, we have double injection and a very dynamic DI injection angle and the engine has its own flow that gives a particular ignition timing curve
When rpm start to rise past 5000, flame speed and burn rate start to change in a way (faster basically) that the engine requires less timing otherwise it knocks... for example PI injection is used more at high rpm also in stock rom, and more PI usually means faster combustion = less timing required

usually max tining is around 5200-5600rpm, then slowly dropping till redline
with a suoercharger the timing will go even lower of course
with e85 instead, you can rise up timing a lot so that you can almost flat out the timing from midrpm to redline

Anyway log is not bad, i ll make you just a quick adjustment more and then you re good to go
Car going faster might be a placebo, or because of higher advabce multiplier now, it has a bit more torque overall, but "peak" power should not be higher and somewhat the same as before, i m not rising timing i m actually lowering them in your tune

Keep in mind i m not really retuning you, i m just adjusting the ots tune quickly because of knocks
When i tune i use a completely different base

[tomm.brz]

Originally Posted by Nfsundrgrnd

Got a fresh Log with the new tune. Got a couple 2k to redline pulls with some spirited driving and blips at the end.

https://datazap.me/u/nfsundrgrnd/2k-...2?log=0&data=1

Car feels faster now as well.

Also why is the ignition advance dropping as the RPM's are climbing towards redline?

Stg1 V4 91oct A00C Nfsundrgrnd-3