^ Im sure the EBC is working, Im just going to have to adjust the duty cycle if it ever stops raining here

 

Mine was doing the exact same thing, it wouldn't control boost at all, even with boost by gear. If the duty cycle is too high the wastegate doesn't open until it is too late and then it can't control boost. At least that's what was happening in my case.

 

Getting a EBC to work properly can be a bitch. Especially when you want to be able to control multiple psi.settings. boost by gear and by rpm are great ways of helping to keep traction.

1158-- were you able to get your EBC to work at spring pressure and different psi settings?

 

It took me about 2 weeks (was not every day because of weather) but I was able to get the boost control dialed in.

I started by dropping duty cycle to 15% and boost wouldn't go above gate pressure in any gear, even using boost by gear. Increasing that to 50% had me hit the cut, so I dropped it back to 20% I got a little more boost, but not a significant increase and boost was slow to build. I started increasing the duty cycle by increments of 5% until I hit the cut. I think I hit the cut at 45%. At a 40% duty cycle the car was occasionally hitting the boost cut at the top of 4th gear on the dyno. After that I started messing with the frequency to dial in boost. I even had to drop the frequency a few % once I started upping the frequency. I found with a duty cycle of 35% and a frequency of 42Hz the boost was more controllable but still built quickly. At higher duty cycles the boost built to quickly and the gate couldn't keep up.

Let me add, make sure you data log this stuff when dialing it in. It's nice to be able to go back and look at duty cycle, solenoid frequency, and boost on the same graph. Also make sure the duty cycle vs pressure table is correct. If this isn't right, you won't be able to hold boost. I also found that with my setup duty cycle and boost are not linear. So changing from duty cycle 20% to 25% did not equal the same increase in boost that changing from 25%-30% yielded.

Now I'm able to hold boost at any psi from just under 8 and above (using a Tial MV-R 44 with .5 spring). My last data log with a 2nd through 3rd gear pull held boost right at what it was set at(well within half a psi or so).

 

Figured I would update this thread. I bought a truck over the winter and kept the car parked in the garage. Now that spring is here and the weather is warm again, the car holds boost rock solid. Thanks for the input guys.