Cyrperformance

iTrader: (1)

I have been trying to find an answer to what I thought was a simple question. What size (psi) spring is best to run in the wastegate when you are using an electronic boost solenoid? Come across all the answers as usual but not one with a definite explanation. If needed: 5.3, twin turbo, looking to make 20-22psi max on occasion but run 10-12 as a daily setup. MS3 Gold will control the solenoid and a switch to change boost levels.
Is it better to run a smaller spring say 5psi or run a 10psi spring as this is the lowest setting?

93hatch

iTrader: (9)

half your total target boost. My car makes 8 lb on gate and 18 lb on 100% duty cycle on controller

fastassls1maro

iTrader: (22)

typically you can only double what the spring is rated for. However my car has a 7psi spring but actually makes 10psi on wastegate and allows me to run 18-19psi total.

coltboostin

With an good EBC if you set it up correctly should should be able to run a light spring and triple or more that pressure by controling signal on the top port.

My last set up was manually controlled. 8psi spring- was 10psi on gate, and I have spiked as high as 25psi.

stevieturbo

If you never intend to run less than 10psi, then use a 10psi spring.

You can do many things with various control plumbing etc after that

If you do not need to go as low as 5psi, then there isnt really a lot of point running a 5psi spring as it may limit how much boost you can make at the top end...but again there are many variables at play here.

Cyrperformance

iTrader: (1)

Thanks for the responses, still waiting for one of the transmissions to come back.