duf2570

so i found that plugued on the wastegate piping to turbo,,,there a spring Inside and a ballbearing,,,its like a valve,,,ive try compress air in it and the air comme out only a 10 psi and more...(even 50 psi+++) so its not a boost cut...the air is clearly not flowing good as the piping was directly connected to the turbo/wastegate

could it be a cheap boost control??

any idea

lsturbo33

Can you please show picture of where you removed that from?

odz-fab

mbc ..... like a diy one

duf2570

its was between the turbo and wastegate..its looklike a kind of boost control...

lsturbo33

Probably right.

duf2570

always thinked that i was on a spring..but in the gate....(my initial boost is 18 psi)...so i have to look if i have a spring...so i can put air in my wastegate how i can know what spring is in??? ..at close to 20 psi if i put air in it i can hear a valve open....off curse without the part that ive show in the first post

lsturbo33

You do have a spring in the wastegate. That diy boost controller is only for increasing boost more than the spring pressure in the wastegate. You can either take apart the wastegate and figure out what spring is in it. Or, you can hook up that vacuum line without the boost controller and go do a pull and see how much boost the car makes.

duf2570

there any other way to know,,,im waiting for my turbo...so i cant do a pull

or set my air compressor at ''X'' psi(like 10) put air in the gate and listen if i can hear the gate.....anyway a gate is ''open or not'' so it can be a way to know

TheShodan

iTrader: (14)

Depends upon the wastegate. If its a TiAL, Turbosmart, or Turbonetics, remove the spring inside and compare it to the technical charts that are on the company's respective sites. If not, and its a knock off of some sort, Best situation is to not test it at all, and get an appropriate wastegate. why take the change with your engine, just over a spring? When in doubt... switch it out.

You have an old Manual Boost Controller that someone put together. The ball-spring version is not the worst, but it all depends upon what it was used with.

I'm just amazed how with all this talk of solenoids and BBG, when a manual boost controller shows up somewhere, its like someone saw an alien species or something. And the worst part is this is while other Forced Induction platforms use this all the time, and have for about 20+ years. hehe..

duf2570

this is what ive found on the web...so its seem to be installed and used like a ''fuse'' so im on a 18 psi spring(tial) and on the dyno i was at 18,4 psi so the boost controller is close to my gate spring,,,if i can keep it and it doesnt affect my boost and lag i will leave it there so it was set at the same psi as the original wastegate spring, that gives quicker spool than normal, as it doesn't allow the wastegate to "creep" open before the desired boost level is met, causing full boost to come on quite a bit sooner???? no???

TheShodan

iTrader: (14)

Nope. you're thinking EBCs a bit more for that. The MBCs like that just hold the spring down to release at the last minute, but that's because the wastegate is made to open up just below the spring rate. Hopefully, it holds since it was DIY with unknown parts. If not, it will not "creep", but "SPIKE" to where it pops the motor.

Good luck with whatever you decide.

duf2570

hummmm well ok...so aarrgghhh,,,thanks again master!!!so i do not trust anymore this mbc...so..i want to stay in the manual boost control zone,,,the better one is???

TheShodan

iTrader: (14)

HALLMAN ES, and Pro Boost controllers are by far one of the best Manual boost controllers I've used on turbo applications. Especially considering they're like $80 shipped, the "bang for the buck" really can't be beat with those. I've used them on my Evolution 3, Galant VR-4, 1GB Talon, etc.

A lot of guys in the SRT-4, Subie, and other force inducted factory applications use this Boost controller. Much better than the Turbo XS versions that have the top adjuster slip over time.

http://www.hallmanboostcontroller.com/applic.html

duf2570

and turbosmart??

nealnanoHX

I had no issues with my Turbo XS SBC.

TheShodan

iTrader: (14)

Not bad.. They are known for their wastegate a and other equipment. If folks use others, that's fine. Someone asked which one was the better alternative, I simply stated it. I've had a lot of turbo XS .. They can work fine, but the Hallman has always beenore consistent in my experience with both.