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Old 01-22-2012, 11:05 PM   #4
Scooby Specialist
Member#: 73932
Join Date: Nov 2004
Chapter/Region: RMIC
Location: Denver
2005 STi BROtuned
2004 S2000


Originally Posted by Ziggyrama View Post
OK guys, I had time today to spend some time on tuning the car. I ended up changing my approach. I tweaked the RT base map in the low RPM range to tune out the jerky throttle behavior in rolling situations and I smoothed out the map altogether. I also rescaled the RT map and modified the values accordingly to dial in the appropriate boost targets. I reverted the ratio map back to stock values.

The result is a MUCH smoother car overall and very good mid range response without the off throttle bucking that I hated in the stock tune. To be fair, I think the stock AVCS map also contributes to the low RPM bogging that the STI has a tendency to do along with a very jerky behavior. By modifying the DBW tables, I was able to rid the car of most of this. The rest will come from altering the AVCS tables.

The tables are as follows (entire stage 1 tune is still in progress):

So are you seeing 100% throttle angle at roughly 60% pedal angle for the most part?
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Last edited by yamahaSHO; 01-22-2012 at 11:10 PM.
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