turbonetic boost controller question

[nicku]

hey guys...
I have a turbonetics manual boost controller. There are four ports on the unit. two of the ports will fit the pipe fitting nipples that came with the kit. Two of the ports will fit the plugs that came with the kit. I am just wondering when I connect the boost controller, I decided to connect from the nipple on the hot pipe----> boost controller -----> wastegate actuator. And that is the correct connection right?
And Also do I need to leave one of the plug open to bleed out the air? Or do I need to get another pipe fitting to bring the air back to intake?

[SoguRacing]

dont you have a manual for the boos controller. anyways, all you need to do is intercept a pressurized/vacuume line on between the throttle body (preferably before the throttle body) and the WG actuator.

[nicku]

so can i do
hot pipe nipple (between bov and turbo) -----> boost controller ----> actuator

do i need to leave one plug open to let the air out? because right now I have both the plugs plugged in, and the boost still stays at stock boost

[nicku]

okay....so I got everything installed it today.....and as I turned the boost to the minium or even maxium, the car would go 20 psi.....
is it because i installed the direction wrong???

[unicoladron]

all a boost controller does is go in-line between the wastegate and a boost source. if you install the boost controller and have it at the lowest boost setting, it will allow the full amount of boost pressure to press on the diaphragm of the waste gate actuator.

now here is the part where you can control boost:

if you choose to turn the boost controller to "add more boost" you are actually restricting the amount of boost pressure that presses down on the diaphragm of the wastegate actuator, thus opening the wastegate itself less, letting MORE exhaust flow over the exhaust turbine, and LESS exhaust out the wastegate.

take the boost controller off and take a deep breath and start blowing into it. while you're doing that, start turning the dial. you will find it becomes harder and harder to blow air through....

i have the same boost controller and have no problems.

[unicoladron]

start with the knob fully counter-clockwise, which is minimum boost. then start turning in single 360° increments so you can keep track of the ideal setting until you reach your desired boost level.

[nicku]

yeah....I connected it like this
hotpipe nipple where is the boost source ---> boost controller ---> actuator.
But I am just wondering what would happen if I installed the boost controller the other way around. There is an arrow pointing out on one side of boost controller port. And I put it point to the actuator. Is the arrow supposed to point at the hot pipe or actuator?

[nicku]

also i searched this
"for internal you need to run the controller as a bleed run a line from compressor cover (turbo) to the actuator with a tee inbetween , then from that tee to the port shown in pic as boost source leaving the arrow port open to bleed" does it make sense to anyone?

[IRN]

I had the turbonetics MBC hooked up for a while. boost source nipple on the throttle body with a "X" four way split 1 for boost gauge, BOV, then a line to the MBC then to the wastegate . i made the mistake and bought it on ebay and it ended up being a fake. + would decrease boost and - would increase and turning it by milimeters would bump the boost up by 5-10 psi. If you look under the MBC you will see a arrow mark on the MBC. that side goes to the wastegate.

[nicku]

mine is from ebay....i dont know whether or not it is fake.....
but I tried to turn both ways to the ends, it still boosts up to 20 psi

[clark]

mine is from ebay....i dont know whether or not it is fake.....
but I tried to turn both ways to the ends, it still boosts up to 20 psi

Hey nicku,

i think i figured out your problem. i've been overboosting like crazy. i had the WG actuator connected DIRECTLY to the nipple on my cold-pipe. still, boost spiked to 1bar and above. connected my turbonetics bc properly, put it down to the minimum setting, still boost spike to more than 1bar. the next day, i went out and moved the WG shaft that connects to the WG flapper (using stock t25) and it only moves about 5-7mm. before i did my swap inspected the s hit out of everything, and i remember being able to move the WG actuator rod all the way.

i believe our problem is the turbo elbow. while swapping, i installed an ebay divorced elbow. so i'm guessing since it's crap brand, the WG flapper clearance was never taken into consideration.

soooo, for all of you with this problem, see if you have an aftermarket turbo elbow/outlet/dump pipe etc. this is most likely the culprit of you boosting the shit out of your turbo, even though you have a controller connected, even though you're using the stock actuator, even though you have the WG directly connected to a vac/boost source.

the elbow is preventing my WG flapper from opening up the amount it should and not letting enough boost bypass the exhaust turbine. thus, shit loads of boost.

luckily i kept my stock dump pipe and will be re-installing that for the time being so i don't heat soak and cause other damage.

[nicku]

Hey nicku,

i think i figured out your problem. i've been overboosting like crazy. i had the WG actuator connected DIRECTLY to the nipple on my cold-pipe. still, boost spiked to 1bar and above. connected my turbonetics bc properly, put it down to the minimum setting, still boost spike to more than 1bar. the next day, i went out and moved the WG shaft that connects to the WG flapper (using stock t25) and it only moves about 5-7mm. before i did my swap inspected the s hit out of everything, and i remember being able to move the WG actuator rod all the way.

i believe our problem is the turbo elbow. while swapping, i installed an ebay divorced elbow. so i'm guessing since it's crap brand, the WG flapper clearance was never taken into consideration.

soooo, for all of you with this problem, see if you have an aftermarket turbo elbow/outlet/dump pipe etc. this is most likely the culprit of you boosting the shit out of your turbo, even though you have a controller connected, even though you're using the stock actuator, even though you have the WG directly connected to a vac/boost source.

the elbow is preventing my WG flapper from opening up the amount it should and not letting enough boost bypass the exhaust turbine. thus, shit loads of boost.

luckily i kept my stock dump pipe and will be re-installing that for the time being so i don't heat soak and cause other damage.

Thank you for your reply. But I found my problem. I bought off the ebay turbonetic boost controller. And I finally realized that it is a "turbonetics style" one. It IS working properly, but I just have to adjust it with very little amount of turn. Otherwise it's open all the way or close all the way. But add reputation for you man.

[tt99ol]

also i searched this
"for internal you need to run the controller as a bleed run a line from compressor cover (turbo) to the actuator with a tee inbetween , then from that tee to the port shown in pic as boost source leaving the arrow port open to bleed" does it make sense to anyone?


Yeah thats right, think about it, if it is a restrictor your boost will eventually fall off back to stock probably starting in 3rd gear and definitely in 4th and 5th, if it is used as a bleeder it will never let enough pressure build at the wastegate to make stock boost only more boost, and if you can reroute the bleed off air to your intake, i know s13 and s14 srs have a fitting in their tube for the stock boost controller