# HKS wastegate actuator...
**URL:** https://forums.speedlife.net/t/hks-wastegate-actuator/88950
**Category:** SON240sx Automotive
**Created:** [September 25, 2005, 7:00pm UTC](https://forums.speedlife.net/t/hks-wastegate-actuator/88950 "2005-09-25T19:00:27Z")
**Posts on this page:** 4
**Page:** 1
### Author:  [@koz](https://forums.speedlife.net/u/koz)
#### Post date: [September 25, 2005, 7:00pm UTC](https://forums.speedlife.net/t/hks-wastegate-actuator/88950/1 "2005-09-25T19:00:27Z")
can anyone verify the correlation between the lengths of the actuator and the boost pressure?
ie. 125mm = 7 psi, 130mm = 10psi, etc.
i’ve read this somewhere before but was hoping someone here knew for sure.
thanks.
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### Author:  [@DTS](https://forums.speedlife.net/u/DTS)
#### Post date: [September 25, 2005, 7:14pm UTC](https://forums.speedlife.net/t/hks-wastegate-actuator/88950/2 "2005-09-25T19:14:10Z")
if you set the hks one to the same length as stock it will be 6.5 psi
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### Author:  [@SHIFT\_KA24DET](https://forums.speedlife.net/u/SHIFT_KA24DET)
#### Post date: [September 26, 2005, 1:32pm UTC](https://forums.speedlife.net/t/hks-wastegate-actuator/88950/3 "2005-09-26T13:32:29Z")
Get a boost gauge and giver’
Every application will be different, depending on your supporting mods.
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### Author:  [@koz](https://forums.speedlife.net/u/koz)
#### Post date: [September 26, 2005, 1:59pm UTC](https://forums.speedlife.net/t/hks-wastegate-actuator/88950/4 "2005-09-26T13:59:25Z")
yeah, i have the Megan guage but haven’t installed it yet.
i’ll get around to it sometime… was really just trying to verify what i had read somewhere. i suppose i’ll also measure after i install the guage (for future reference).