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Old 01-16-2007, 07:31 PM   #1
acidrain088
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Default wastegat duty cycle

in terms of lowest spooling am i corect in saying that at low rpms the wdc should be low. when do you want the wdc or do i have this all mixed up. if someone could clarify this or post up a stock map and a tuned one i would realy apreciate it.
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Old 01-16-2007, 09:19 PM   #2
gaby
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If yuo want low boost= low wastegate duty.
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Old 01-17-2007, 12:09 AM   #3
acidrain088
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is the wdc measured in the time the wastegate is closed unlike injectors
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Old 01-17-2007, 12:18 AM   #4
blkscooby
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Quote:
Originally Posted by acidrain088 View Post
is the wdc measured in the time the wastegate is closed unlike injectors
No it refers to the % of boost pressure available at teh compressor outlet that is applied to the actuator to hold it closed. The stock BCS is a "bleed" type, meaning that as it needs to open the WG to control or reduce boost, the % of boost pressure applied to the WG is less than max possible. You will notice that the line coming from the compressor outlet is T'd into the WG actuator, then through the BCS and into the air inlet. Think of a seesaw; more boost of the WG from exhaust than from actuator causes it to open in increasing amounts.

To reach target boost faster, raise the WGDC in low RPMs.


Make sense?
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Old 01-17-2007, 05:23 PM   #5
acidrain088
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perfect thank you
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