# Running off external wastegate spring. **URL:** \ **Category:** PittSpeed Automotive\ **Created:** [March 12, 2008, 4:43am UTC](https://forums.speedlife.net/t/running-off-external-wastegate-spring/196071 "2008-03-12T04:43:32Z")\ **Posts on this page:** 13\ **Page:** 1
**Author:** ![dsmdave](https://avatars.discourse-cdn.com/v4/letter/d/c67d28/32.png) [@dsmdave](https://forums.speedlife.net/u/dsmdave)\ **Post date:** [March 12, 2008, 4:43am UTC](https://forums.speedlife.net/t/running-off-external-wastegate-spring/196071/1 "2008-03-12T04:43:32Z")
Anyone ever run off their wastegate spring only? I was thinking of running the two blue springs for my tail 38mm. It says it’s 23.5psi with the two together. I wonder if it will spike before it opens, or open early. I want to switch because my turbo smart boost controller likes to leak at idle.All because of the small fittings it has. I could step it down but thought running off the spring wouldn’t be a bad idea. Currently my tune if for 24psi. ---
**Author:** ![fmfkid250](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/fmfkid250/32/5973_2.png) [@fmfkid250](https://forums.speedlife.net/u/fmfkid250)\ **Post date:** [March 12, 2008, 4:49am UTC](https://forums.speedlife.net/t/running-off-external-wastegate-spring/196071/2 "2008-03-12T04:49:35Z")
I used to run my wastegate on the spring alone w/ out vacuum lines. and if i wanted more i would just put a vacuum line on the outside of the gate ---
**Author:** ![nitroice40](https://avatars.discourse-cdn.com/v4/letter/n/7bcc69/32.png) [@nitroice40](https://forums.speedlife.net/u/nitroice40)\ **Post date:** [March 12, 2008, 6:50am UTC](https://forums.speedlife.net/t/running-off-external-wastegate-spring/196071/3 "2008-03-12T06:50:03Z")
running off the springs is fine, but right before its going to open it will spike up a few psi. Shouldnt be anything major. ---
**Author:** ![whitey](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/whitey/32/5911_2.png) [@whitey](https://forums.speedlife.net/u/whitey)\ **Post date:** [March 12, 2008, 7:44am UTC](https://forums.speedlife.net/t/running-off-external-wastegate-spring/196071/4 "2008-03-12T07:44:46Z")
my 240 is running off the spring right now. I will check for spikes when it hits the dyno. ---
**Author:** ![dsmdave](https://avatars.discourse-cdn.com/v4/letter/d/c67d28/32.png) [@dsmdave](https://forums.speedlife.net/u/dsmdave)\ **Post date:** [March 12, 2008, 10:25am UTC](https://forums.speedlife.net/t/running-off-external-wastegate-spring/196071/5 "2008-03-12T10:25:15Z")
Do you guys find that the spring rating is accurate to the amount of boost that the Boost Gauge reads? Also does your External gate leak when doing a boost leak test? My Turbosmart 38mm gate did. That’s why I haven’t tried this untill switching to the Tial gate I have now. ---
**Author:** ![whitey](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/whitey/32/5911_2.png) [@whitey](https://forums.speedlife.net/u/whitey)\ **Post date:** [March 12, 2008, 12:02pm UTC](https://forums.speedlife.net/t/running-off-external-wastegate-spring/196071/6 "2008-03-12T12:02:12Z")
i have the 14psi spring in my Tial 44 Wastegate right now and it boost to 14psi and stays. ---
**Author:** ![dsmdave](https://avatars.discourse-cdn.com/v4/letter/d/c67d28/32.png) [@dsmdave](https://forums.speedlife.net/u/dsmdave)\ **Post date:** [March 12, 2008, 1:04pm UTC](https://forums.speedlife.net/t/running-off-external-wastegate-spring/196071/7 "2008-03-12T13:04:37Z")
> [@97 Camaro Anniv. Edition Dispute](https://forums.speedlife.net/t/97-camaro-anniv-edition-dispute/35394/7): > > i have the 14psi spring in my Tial 44 Wastegate right now and it boost to 14psi and stays. That’s all the info I needed. Thanks! ---
**Author:** ![fmfkid250](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/fmfkid250/32/5973_2.png) [@fmfkid250](https://forums.speedlife.net/u/fmfkid250)\ **Post date:** [March 12, 2008, 1:48pm UTC](https://forums.speedlife.net/t/running-off-external-wastegate-spring/196071/8 "2008-03-12T13:48:55Z")
> [@97 Camaro Anniv. Edition Dispute](https://forums.speedlife.net/t/97-camaro-anniv-edition-dispute/35394/7): > > i have the 14psi spring in my Tial 44 Wastegate right now and it boost to 14psi and stays. That should be with a vacuum side on the inside of the gate to help push it open… ---
**Author:** ![whitey](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/whitey/32/5911_2.png) [@whitey](https://forums.speedlife.net/u/whitey)\ **Post date:** [March 12, 2008, 1:57pm UTC](https://forums.speedlife.net/t/running-off-external-wastegate-spring/196071/9 "2008-03-12T13:57:38Z")
> [@CATURDAY](https://forums.speedlife.net/t/caturday/17848/231): > > That should be with a vacuum side on the inside of the gate to help push it open… I am not exactly following what you are saying here. But I do have a vacuum line going from my hot pipe to the side port on the wastegate. ---
**Author:** ![fmfkid250](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/fmfkid250/32/5973_2.png) [@fmfkid250](https://forums.speedlife.net/u/fmfkid250)\ **Post date:** [March 12, 2008, 2:07pm UTC](https://forums.speedlife.net/t/running-off-external-wastegate-spring/196071/10 "2008-03-12T14:07:53Z")
> [@NYSpeed @ Dunville: Track Day #3 Discussion and Pics/Vids](https://forums.speedlife.net/t/nyspeed-dunville-track-day-3-discussion-and-pics-vids/35659/32): > > I am not exactly following what you are saying here. But I do have a vacuum line going from my hot pipe to the side port on the wastegate. do you have a vacuum line on any part of your wastegate? ---
**Author:** ![whitey](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/whitey/32/5911_2.png) [@whitey](https://forums.speedlife.net/u/whitey)\ **Post date:** [March 12, 2008, 2:54pm UTC](https://forums.speedlife.net/t/running-off-external-wastegate-spring/196071/11 "2008-03-12T14:54:56Z")
> [@fmfkid250"](#): > > do you have a vacuum line on any part of your wastegate? yes on the side port of the wastegate. ---
**Author:** ![dsmdave](https://avatars.discourse-cdn.com/v4/letter/d/c67d28/32.png) [@dsmdave](https://forums.speedlife.net/u/dsmdave)\ **Post date:** [March 13, 2008, 12:43pm UTC](https://forums.speedlife.net/t/running-off-external-wastegate-spring/196071/12 "2008-03-13T12:43:37Z")
Other wise it would blow open at random Psi’s. It also would flutter and be a hot mess… ---
**Author:** ![whitey](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/whitey/32/5911_2.png) [@whitey](https://forums.speedlife.net/u/whitey)\ **Post date:** [March 13, 2008, 4:35pm UTC](https://forums.speedlife.net/t/running-off-external-wastegate-spring/196071/13 "2008-03-13T16:35:20Z")
> [@SOLD: 2003 Raptor 660r](https://forums.speedlife.net/t/sold-2003-raptor-660r/35433/2): > > Other wise it would blow open at random Psi’s. It also would flutter and be a hot mess… It might sound kind of cool, but definitely would not be effective in building some boost