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SVTPerformance's Chain of Restaurants
Tuning À la carte
Dies on Return to Idle
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<blockquote data-quote="SecondhandSnake" data-source="post: 15739867" data-attributes="member: 116684"><p>Not sure if you saw the edit, but it does look like the problem is the discrepancy between actual airflow through the TB and the calibration value. (0.23lb/min actual vs. cal value of 0.525 lb/min) Can you confirm the stock value in the 03 Cobra tune, as far as what I should be targeting?</p><p></p><p>That would explain the positive IAC integrator I'm seeing in my logs.</p><p></p><p>I realize my dashpot is overly conservative right now, but that's as a bandaid until I get the idle sorted out.</p><p></p><p>I don't think it's minimum clip in low gears, or dashpot related. It does it the same stationary (VS = 0) as it does in motion. I think the dashpot is ok, but as soon as it's transitioning to idle control it's dropping off because of the aforementioned throttle air issue; it's expecting more air than it's getting.</p><p></p><p>It's a cold week so we'll see when I get around to it if the adjustments will do the trick. Unless I hear otherwise I'm going to target 0.4lb/min through the TB both physically and in the tune. Fingers crossed the IAC integrator will be next to zero with that.</p><p></p><p>I do appreciate the help.</p></blockquote><p></p>
[QUOTE="SecondhandSnake, post: 15739867, member: 116684"] Not sure if you saw the edit, but it does look like the problem is the discrepancy between actual airflow through the TB and the calibration value. (0.23lb/min actual vs. cal value of 0.525 lb/min) Can you confirm the stock value in the 03 Cobra tune, as far as what I should be targeting? That would explain the positive IAC integrator I'm seeing in my logs. I realize my dashpot is overly conservative right now, but that's as a bandaid until I get the idle sorted out. I don't think it's minimum clip in low gears, or dashpot related. It does it the same stationary (VS = 0) as it does in motion. I think the dashpot is ok, but as soon as it's transitioning to idle control it's dropping off because of the aforementioned throttle air issue; it's expecting more air than it's getting. It's a cold week so we'll see when I get around to it if the adjustments will do the trick. Unless I hear otherwise I'm going to target 0.4lb/min through the TB both physically and in the tune. Fingers crossed the IAC integrator will be next to zero with that. I do appreciate the help. [/QUOTE]
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SVTPerformance's Chain of Restaurants
Tuning À la carte
Dies on Return to Idle
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