lxcoupe

iTrader: (9)

Curious what everyone's settings are. I have a 9lb spring in the Precision 46mm gate. I've set the spring setting to 8.8psi on my Innovate SCG-1, my duty cycle is 10%, my gain 0, my boost cutoff at 13psi, and my AFR cutoff at 12.5. I'm trying to log 12psi consistently. I seem to have difficulty controlling boost below the boost cutoff? It goes to 13.7 regularly and then I feel the controller pulsating. Logs are always 11.4-11.6 so I don't think I'm hitting my AFR cutoff. The tuner is only running 13 degrees timing since I haven't been back to the dyno since I fixed my ignition problems.

Gadgetized

iTrader: (9)

Run it without going through the controller. Increase spring pressure until boost will hold steady without climbing. Then go through the controller. Your gate might not be working well enough to keep the boost low.

lxcoupe

iTrader: (9)

So if I want to run 12lbs, I should make my mechanical spring pressure 12lbs? It seems that everyone is using 6 or 7lb springs to make 12lbs with the controller?

Gadgetized

iTrader: (9)

I would run the spring for the lowest desired boost that you will be running. If 10 lbs will be the lowest boost, I would use a 10 lb spring. If you want to turn it up to 12, just bump the controller up. If you bypass the controller, and see the boost hold steady, and have the boost climb with the controller, you know you have a setting wrong with the controller. Also if I run a 12 lb spring I see a much higher pressure than 12 psi.

TrickTurbo

iTrader: (12)

Springs are guessing points until you install them.
We have seen the same spring set up tried different results.
Since the builds where different.

So a 7lbs might give you 11 psi.
In your set up thats an 11lbs spring.
You might not get a spring to put you exactly where you want to be.