soooooo


im gonna run this hks wg. and up the boost with a MBC... so what line goes where?

there is two places to hook up vac/boost on the WG. one on top and one on the side.

what line goes to what... i dunno... im so sad.

 

yay...

 

Manifold/Compressor pressure goes to the bottom, MBC to the top. Carl

 

why manual instead of electronic?

 

Slower response, won't hold boost up top, all the usual motivators... (cost DUH!) Just playin, Carl

BTW a used profec B can be had for 150.00 and will make a HUGE difference, thus Bukwild's Q.

 

so i run a line from the compressor to the bottom one... got that.
now where do i get the source that goes through the mbc to the top of the WG?


so a EBC will work better because why? i have always used manual ones and liked the performance. I plan to set it and forget it like ron popiel rotisahfi'n some sheet.

i actually do plan to get a ebc later. but for now money is tight and im on a budget. Im doing a mad dash to get this car done so i can get it tuned then bdc comes to town.

 

PM me with BDC coming to town info because I might be down on something like that because I have just got my profec B aswell and this was the last toy i needed to get my setup up and hopefully running.

 

No,this is not the way to connect a MBC (ball/spring). Connect it to the bottom nipple ONLY. Leave the top nipple alone (vent to atmosphere).
When your set boost point is reached the ball/spring valve will realese pressure that will then go to the bottom nipple which pushes the diaphram, which opens wastegate, thus regulating boost. Turbo will spool super fast with this setup and hold rock steady. I've done this setup with the HKS standard (40mm) and many internal wastegate setups using DIY MBC's.

 

You have a $500+ WG + thousands more for the turbo set-up, and you're ******* with needle valves and ball-n-spring devices???

Dude, the MBC is really inconsistent, as boost levels varies with temp and humidity.

The EBC is more consistent and a lot more repeatable, especially with an external WG.

That comment about slow boost response is totally bullshit...


-Ted

 

Not sure why I bother, but any manual controller is allowing some signal to get to the WG, that signal is exhaust energy, which means the turbo gets less, which means slower spool up. It is so elementary to figure that one out, Ted you should know better, LOL.

 

Fast enough for you is apparently slow to the rest of the world. There is no way a simple valve can replicate a computer controlled solenoids performance, PERIOD. Do MBCs work, yes, but they will never hold boost, or spool like an EBC.

 

I run a ball and spring controller...works great. only use the bottom nipple. MP-> BC -> WG.

 

My bad, I assumed it worked like an EBC. What a newb... Thus the advantage of an EBC, it holds the WG completely shut until target boost, then bleeds off tuiny amounts of exhaust, thus boosting faster, and because the gate isopened, and closed, it can hold boost longer, ie the finite amount of energy is in effect held in reserve by the ebc. With an MBC you are simply blocking the signal, with the EBC you are manipulating it ~1/100th of a second at a time. Once the gate is open on an MBC it tends to stay completely open, this is not true AFAIK with an EBC. Carl

 

I missed something somewhere...

Last I heard...
Boost controllers work on the compressor side of the turbo.
Boost is built in the compressor section, which in turn, pressurizes the hose to the wastegate actuator.
More pressure...faster opening of the wastegate (actuator).
The MBC (or EBC) either bleeds off this pressure (bleeder / needle valve) or hold it in check and then opens to allow pressure once overcoming spring rate (ball-n-spring), this keeps the wastegate shut longer which allows more exhaust gases to push the turbine wheel which actually aids spool-up?

I dunno where "slower pool up" comes from?


-Ted