how low-high will this boost controller go???

myturbo · 01-12-2009, 03:35 AM

Joe P. MBC IL Series inline boost controllers! not sure how low-high it will go

selmerguy · 01-12-2009, 04:05 AM

um.... It will go as low as your wstegate will let it. Boost controllers can not make boost go lower than the wastegate spring setting!!! So if you run a boost source straight to the wastegate, that is the same as running the boost controller wide open. That would be your low point. The high point would be about 1.5 times that spring pressure. (thats the same as running yout gate without any line or the boost controller closed) How consistant it is inbetween those ranges.. I have no clue. But that is not what you asked. If you are running a external gate or a internal with the extra top boost port this will change alittle. If you are running one of those I dont think you would have asked the question.
Hope this helped

Sam

myturbo · 01-12-2009, 04:26 AM

Quote:

Originally Posted by selmerguy

um.... It will go as low as your wstegate will let it. Boost controllers can not make boost go lower than the wastegate spring setting!!! So if you run a boost source straight to the wastegate, that is the same as running the boost controller wide open. That would be your low point. The high point would be about 1.5 times that spring pressure. (thats the same as running yout gate without any line or the boost controller closed) How consistant it is inbetween those ranges.. I have no clue. But that is not what you asked. If you are running a external gate or a internal with the extra top boost port this will change alittle. If you are running one of those I dont think you would have asked the question.
Hope this helped

Sam

i no it will go as low as my wastegate (externail tial) but how high will it go is what i really meant sorry for the confushion

selmerguy · 01-12-2009, 05:28 AM

Using the port on the side about 1.5 times the spring pressure.

myturbo · 01-12-2009, 05:34 AM

Quote:

Originally Posted by selmerguy

Using the port on the side about 1.5 times the spring pressure.

are you sereies

selmerguy · 01-12-2009, 10:35 AM

Yeah. That is the general rule of thumb. So if you can run 7 psi on the spring with the MBC open then 18.5 is where it will open with the MBCclosed. There are other things to consider though. What turbo are you running. Can the wastegate flow enough to keep that boost pressure from creeping. You can also use the top port on the tial and get more boost. This takes alittle more time to get right. The info is all out there my friend.

myturbo · 01-12-2009, 10:39 AM

im runin borgwarner S362 ext tip & tial 40mm with big red spring

BigSorn · 01-12-2009, 10:41 AM

You can run that thing to the moon if you want.
don't try that.

selmerguy · 01-12-2009, 12:12 PM

trial and error time I guess. I think your wastegate will flow enough for that turbo. You should be able to use the 1.5x rule.

1992awdlaser · 01-12-2009, 06:12 PM

It will go as high a you want. If you had it turned all the way in and it didn't make the amount of boost you wanted, you could put a stronger spring in the wastegate.