CT15 Wastegate Settings Options

[HardHead93]

I just got my CT Sweet 16 turbo upgrade back from ATS racing. It is a CT15b turbo from the Gen 4 3sgte with an upgraded billet wheel.
CT SWEET 16-2
CT SWEET 16-3
CT SWEET 16-1
I got the billet wastegate upgrade and had them send me a few different size springs. I have the option of using a 7 psi, 10 psi, or 12 psi spring. The 7 psi one is definitely out because I am running close to 90% duty cycle on my boost controller with that size of spring to get close to my desired boost level of 17 psi. Also depending on my flex fuel tune I may be able to run a couple more psi on e85. Should I use the 10 psi or the 12 psi spring? Why?

This post has been edited by HardHead93: Dec 29, 2017 - 8:27 AM

[Smaay]

if you can run 17 safely, go with the 12lb spring. it will make the duty cycle on the boost controller lower and more reliable

[HardHead93]

if you can run 17 safely, go with the 12lb spring. it will make the duty cycle on the boost controller lower and more reliable

Thank you! You tipped the scales, my tuner agrees with you but other forums where saying it may cause wheel spin. 12 psi spring it is!