E series 6466 build questions

[Schmidty335i]

@wheela Thanks for the reminder and yes I did remember to install the ring with the wastegate. @houtan I did send a log to Terry@bms to review, and he said it looked setup correctly. I am just thinking that I need to get the spring setup in my wastegate setup to be stiffer. This is what it says on Terrys site:

"With the MAC solenoid in theory the JB4 can control up to 4x the wastegate spring but in practice smaller twin scroll turbos tend to be closer to 2.5x the wastegate spring. We suggest going 40% of your desired maximum boost target. So for a 30psi maximum target around a 12psi spring. Going too high on the spring will sacrifice partial throttle boost control and smoothness. Going too low will prevent you from hitting higher boost targets at higher RPM."

So if my waste gate is set at 7.8 psi on spring pressure 2.5x that would be 19.5 psi (right where I am currently). I will give it a shot this weekend and update you all with my findings. Thanks again for all of the replies I definitely appreciate it!

 

[wheela]

Hey @Schmidty335i how's it going? Any updates on your progress?

 

[Schmidty335i]

Hey @Schmidty335i how's it going? Any updates on your progress?

Hey @wheela everything is great, I added a spring to my wastegate and that's exactly what it needed! The wastegate only pressure went from 7.8 to 13.7 I have been running it in MAP 3 (20 psi) and it has been flawless my timing is pretty low though since I am currently running pump 92oct fuel. I am wanting to run MAP 4 (23psi) but I can't do any logs to see if it is safe or not, it's the rainy season here in Washington so I can't keep traction at all at WOT.

Also, I was bored this weekend and made a couple of downpipe dump pipes I plan on making some changes to my current exhaust and will throw these one until I finish the work.