MyE28.com DEV

Now that I got my timing table under control with the help of a few knowledgeable members I turned the boost up from 160kpa to 189kpa (13psi). The boost indicator in my car didn't climb above 10psi and I got some surging from the WG. I'm using a grainger valve, which I know is at least getting signal, I can hear it modulating. Any ideas? I tried increasing the Proportional gain up to 75, but it didn't make a difference so I turned it back down to 50.

The controller is plumbed just like the two port wastegate diagram.

I have an 8lb spring in the WG, it's the smallest one I have. I also have a 10 and a 13.

I just found this but i'm still pretty perplexed. Back to reading!

http://www.msextra.com/forums/viewtopic ... 31&t=42223

Use duty cycle at first to check everything is working good.
Lower duty cycle means more boost. Change it to normal from inverted and see if that's it.

I'm running 15psi and these are my settings. I've read a bunch of guys are running way lower #'s on the PID settings to get the boost to rise. Here are my settings.

P - 12
I - 6
D - 0

I'm also running a 8psi spring.

clongo wrote:I'm running 15psi and these are my settings. I've read a bunch of guys are running way lower #'s on the PID settings to get the boost to rise. Here are my settings.

P - 12
I - 6
D - 0

I'm also running a 8psi spring.

Awesome, i'll try this on the way to work and report back. I CANNOT wait to get this thing to some proper boost levels.

clongo wrote:I'm running 15psi and these are my settings. I've read a bunch of guys are running way lower #'s on the PID settings to get the boost to rise. Here are my settings.

P - 12
I - 6
D - 0

I'm also running a 8psi spring.

This was it. I'm building boost now no problem. I had to increase the P up to 20 because it was overshooting in 2nd gear. Thanks!

No prob. Do you still need that timing map?

clongo wrote:No prob. Do you still need that timing map?

Sure! I appreciate it.