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Tor · 02-05-2017, 08:25 PM

4th attempt...

I think this time it looks pretty successful. Whether it's a good idea or not, I don't know. But it is indeed possible to steer AFR with OL fueling.

http://datazap.me/u/tor/tor-206-3-lo...zoom=9038-9141

But I got a feeling that this is just patching an underlying problem: That the standard OFT AVCS' are not correct for the Gruppe S header.

I am getting more and more tempted to get it dyno tuned if only there was someone here that would do it with BRZEdit and leave it unlocked so I could keep messing with it myself afterward. Alas, that's not going to happen.

I accidentally made a 4th gear pull. How do you do that by accident? Well, I was rolling on at 50-60 km/h as usual, and I somehow missed that it was in 4th. I did feel it going a bit faster than my usual 3rd gear pulls at the top, but I didn't look at the speedometer. So it wasn't until I got home and looked in the log that I was actually sure. That's how badass the car pulls now!

Topping out at 170 km/h it was good that this was of course done at a closed off test circuit.

But it revealed that there is a lot of work to do. Temperatures have risen, so my IAT is now 12-15 deg C instead of 5 degs, and the engine doesn't like that as far as timing goes:

http://datazap.me/u/tor/tor-206-3-lo...zoom=7558-7762

Somehow my otherwise predictable slight positive LTFT are now negative so that probably also counter productive. Could it be due to the load change at 3700 rpm? In any case, I am going to lower it back to where it was as there is no point in having it at 1.25.

Next test could be to revert it all completely and instead to lower exhaust AVCS a deg or two. Is there any effective way to adjust AVCS without a dyno?

02-05-2017, 08:25 PM	#29
Tor Senior Member Join Date: Feb 2015 Drives: Toyota GT86 Location: Europe Posts: 919 Thanks: 369 Thanked 557 Times in 301 Posts Mentioned: 40 Post(s) Tagged: 2 Thread(s)	4th attempt... I think this time it looks pretty successful. Whether it's a good idea or not, I don't know. But it is indeed possible to steer AFR with OL fueling. http://datazap.me/u/tor/tor-206-3-lo...zoom=9038-9141 But I got a feeling that this is just patching an underlying problem: That the standard OFT AVCS' are not correct for the Gruppe S header. I am getting more and more tempted to get it dyno tuned if only there was someone here that would do it with BRZEdit and leave it unlocked so I could keep messing with it myself afterward. Alas, that's not going to happen. I accidentally made a 4th gear pull. How do you do that by accident? Well, I was rolling on at 50-60 km/h as usual, and I somehow missed that it was in 4th. I did feel it going a bit faster than my usual 3rd gear pulls at the top, but I didn't look at the speedometer. So it wasn't until I got home and looked in the log that I was actually sure. That's how badass the car pulls now! Topping out at 170 km/h it was good that this was of course done at a closed off test circuit. But it revealed that there is a lot of work to do. Temperatures have risen, so my IAT is now 12-15 deg C instead of 5 degs, and the engine doesn't like that as far as timing goes: http://datazap.me/u/tor/tor-206-3-lo...zoom=7558-7762 Somehow my otherwise predictable slight positive LTFT are now negative so that probably also counter productive. Could it be due to the load change at 3700 rpm? In any case, I am going to lower it back to where it was as there is no point in having it at 1.25. Next test could be to revert it all completely and instead to lower exhaust AVCS a deg or two. Is there any effective way to adjust AVCS without a dyno? __________________ Build: T(h)or's GT86 hammer (Europe) - essential track setup Youtube: GT86 dude Last edited by Tor; 02-05-2017 at 09:08 PM.