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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="Bullitt5566" data-source="post: 15739025" data-attributes="member: 119066"><p>Honestly. I would start over from a known good point. I don't know about you but sometimes I get way off in the weeds and have to start over.</p><p></p><p>First, I'd put the IAC valve table back to stock. I think that adjusting the IAC integrator table compensates for any errors in the IAC valve table. </p><p>Second, I'd put the MAF transfer function back to stock in the idle region. I've tried to mess with it before, but with bigger cams it is almost impossible to get a good reading at idle and it is calibrated from factory and SCT provides those values.</p><p>Third, for the throttle stop. Set it like you hear else where. Disconnect the IAC and TP sensor. Se the screw to the lowest setting the engine will idle it. Turn the engine off, reconnect and start it. Datalog and dial in the IAC integrator table so the error is close to 0. Once you get a good idle update the air around the throttle body, remember you opened it TB more. Stock is .4. Datalog the MAF counts and IAC DC at idle whatever isn't going through the IAC is going around the TB. So if you are pulling 1.00 lb/min and IACDC is 30% then 60% is going around the TB. So .6.</p><p>Last, back to the dashpot. I think the hanging idle is cause by the minimum clip settings, try setting the lowest setting to 0 and see what happens.</p></blockquote><p></p>
[QUOTE="Bullitt5566, post: 15739025, member: 119066"] Honestly. I would start over from a known good point. I don't know about you but sometimes I get way off in the weeds and have to start over. First, I'd put the IAC valve table back to stock. I think that adjusting the IAC integrator table compensates for any errors in the IAC valve table. Second, I'd put the MAF transfer function back to stock in the idle region. I've tried to mess with it before, but with bigger cams it is almost impossible to get a good reading at idle and it is calibrated from factory and SCT provides those values. Third, for the throttle stop. Set it like you hear else where. Disconnect the IAC and TP sensor. Se the screw to the lowest setting the engine will idle it. Turn the engine off, reconnect and start it. Datalog and dial in the IAC integrator table so the error is close to 0. Once you get a good idle update the air around the throttle body, remember you opened it TB more. Stock is .4. Datalog the MAF counts and IAC DC at idle whatever isn't going through the IAC is going around the TB. So if you are pulling 1.00 lb/min and IACDC is 30% then 60% is going around the TB. So .6. Last, back to the dashpot. I think the hanging idle is cause by the minimum clip settings, try setting the lowest setting to 0 and see what happens. [/QUOTE]
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SVTPerformance's Chain of Restaurants
Tuning À la carte
Dies on Return to Idle
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