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Old 11-22-2017, 12:32 PM   #10
Tor
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Yes, you guys with wifes are heroes fighting for the survival of the human race. You should all be given medals for putting up with all that BS!

Back to AVCS... I did my 4 logs today under great trouble (traffic is horrible here). So doing 3rd gear pull to redline is quite a challenge. Especially trying to keep somewhat consistent IATs.

I drove prepared with my "base tune" to my favorite road. Once I arrived I chickened out with the timing and decided to pull -1.4 deg. So since I had to flash again, I thought I might as well start out with the most aggressive advance. The "plus 8" purple line:



It changed the sound of the engine completely. Like the OFT stage 1 groooar around 4000 rpm, just the grooar is there all the way up through the rpm. From the butt dyno it felt faster, but I discounted it as placebo.
Here the log +8:
https://datazap.me/u/tor/tor-236-8base?log=0

Next up was -4, I didn't really expect much from this as my gut feeling was that this would be a step in the wrong direction. But just for verification. It did indeed feel meeeh, especially around 4200 rpm where I made the largest dip in the advance. It didn't really help on the lean hump either, so I'll either leave it or go back to fix it with Engine Load Compensation:
-4 log:
https://datazap.me/u/tor/tor-236-44?log=0

Next +4, and then the "base tune" again with -1.4 deg timing. Both felt kind of similar.
+4 log:
https://datazap.me/u/tor/tor-236-44?log=1
Base log:
https://datazap.me/u/tor/tor-236-8base?log=1

On the way home, I prayed the +8 tune would be the one that had the best VE, because it sounds soo cool!

Back home I throw all the logs into Vgi's too, and it comes up with this:


Values copied into my excel sheet:


Now I wonder if you can tune AVCS by sound. Haha

Next up, it to make one or two more tunes with even more advance above 5200 rpm. Maybe two more with smaller steps, like +3 and +6. Once done I'll try to increase the exhaust retard and see if that brings anything.

Last edited by Tor; 08-22-2018 at 07:23 PM.
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