questions about 6-16 data logs on stock car

MAC335i · 07-06-2010, 03:42 AM

poof

OpenFlash · 07-06-2010, 12:21 PM

You can tell by looking at debug byte 2&5 (autotuned ignition correction and boost) that the procede was doing exactly as it should. At the default/start setting 13.5psi, it was responding to it being too aggressive. In following runs, you can see ignition correction climbing upwards to 100% and boost downwards to 11.5psi. At that point, you can see the target aggression value of 2 (which turns into 2.5 in 4th gear) being achieved and maintained.

So let autotuning do it's thing. No need to make any adjustments. Which means keep the aggression target at the default of 2. 1 is far to conservative. It well never be able to achieve or maintain that low of a target on pump gas on a car with a stock fmic.

Also, make sure you use a good quality fuel if you aren't doing so already. No Costco, safeway, beacon, etc. The better fuel you use, the more boost you will autotune to.

Shiv

07-06-2010, 03:42 AM	#1
MAC335i First Lieutenant 19 Rep 301 Posts Drives: 2007 Jet Black E90 335i Join Date: Nov 2009 Location: California iTrader: (12)	poof poof Last edited by MAC335i; 06-11-2015 at 12:20 AM..
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07-06-2010, 12:21 PM	#2
OpenFlash 1737 Rep 17,960 Posts Drives: A Lot Join Date: Sep 2006 Location: SF Bay, CA iTrader: (0) Garage List 2018 Ducati Panigal ... [0.00] 2016 Mazda CX5 [0.00] 2017 Aprilia Tuono ... [0.00] 2019 BMW M2 Competi ... [0.00] 2015 BMW M5 Competi ... [10.00] 2016 Ducati XDiavel S [0.00] 2016 AMG GT S [0.00] 2011 Ferrari 458 It ... [0.00] 2017 Charger Hellcat [0.00] 2015 KTM Super Duke ... [0.00] 2016 KTM RC390 [0.00]	You can tell by looking at debug byte 2&5 (autotuned ignition correction and boost) that the procede was doing exactly as it should. At the default/start setting 13.5psi, it was responding to it being too aggressive. In following runs, you can see ignition correction climbing upwards to 100% and boost downwards to 11.5psi. At that point, you can see the target aggression value of 2 (which turns into 2.5 in 4th gear) being achieved and maintained. So let autotuning do it's thing. No need to make any adjustments. Which means keep the aggression target at the default of 2. 1 is far to conservative. It well never be able to achieve or maintain that low of a target on pump gas on a car with a stock fmic. Also, make sure you use a good quality fuel if you aren't doing so already. No Costco, safeway, beacon, etc. The better fuel you use, the more boost you will autotune to. Shiv
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