Turbo Boost Gauge Hook up ?

[Duncan]

I have the boost gauge hooked up on the manifold and it does indeed show the boost when it comes on,just wondering if anyone knows where to hook into so it will show the vacuum aswell ? Is there a way to hook it up on the other side of the throttle bodies where it will see the vacuum ? Do I have to tie all three manifolds together to achieve this ? And will it still jump around maniaclly as it does on just one cylinder ?(that was my extent of messing with it today)
Just wondering thanks guys.
Stay safe out there, theres idiots in cages everywhere , and you seem to find em faster with a turbo......

 

[Duncan]

Ok guys stand down....... messed with it some more today and daisy chained all the seperate intakes together ,it made it a lot better obviously, and I'm gonna give it a try like this. Don't think I can settle the needle down much more ,and its still pretty jumpy at idle. Would anyone know of a shock resistant or liquid filled boost gauge supplier ?
Stay safe out there.

 

[warp9.9]

Hey Duncan I have had two boost gauges now the first I will call a cheapy as the needle bounced alot. It was one I bought at your typical auto parts store. it just relied on vaccum/boost. I had it hooked up in the cross ocer pipe from the blower. then I spent 199.00 on one from SPA it has a boost sensor that sends a electronic signal to a stepper motor this one has no bounce at all and does have a sensitivity setting you can use to control bounce if you want.

I learned that if you have it before the throttle bodies you are not getting a true reading of what is going in the motor just what the turbo/blower is pushing. I then linked it to the vac lines under the throttle bodies which is more accurate since it is after the throttle bodies.
SPA makes some great and slightly pricey stuff. I also have a intercooler in/out temp gauge 499.00 very pricey but it is importantto monitor these temps going into the motor to watch for detonation in the case of the intercooler I can monitor air temp reduction and was able to move the air temp sensor from infront of the blower to the throttle bodies which is better for the ecu to monitor air temp going in the motor. without the IC it would burn up if I moved it near the throttlle bodies.

 

[Duncan]

Thanks for the info Warp9.9, still figuring out all this turbo stuff and your info is much appreciated. I'll be checkin the SPA stuff and figuring something from there.thanks again.