I had my MBC on for few months and decided to remove it to get it back to stock boost... I replaced the hose where I capped off ( not to sure what its called ) w/ a fresh vac line and I've been seeing boost way past stock from 2nd gear and up... I've been reading up on a thing called a "restrictor pill" and wanted clarification if that could be the problem, because if so, I don't have the stock hose with this pill in it... Does anyone know where I can purchase this pill or what not...? Thanks...
Restrictor pill in stock hose...?
- Thread starter MBOIZ-MS3
- Start date
Darth Vader
Member
*facepalm*
He's referring to the restrictor in the turbo's comp side high pressure fitting. ...and it's in the fitting itself, to answer the OP's question.
He's referring to the restrictor in the turbo's comp side high pressure fitting. ...and it's in the fitting itself, to answer the OP's question.
I see, will I need to go to the dealership for that...? Or can I order it elsewhere Darth Vader...?
Darth Vader
Member
The hose has nothing in it. The restrictor is built into the fitting. You can't remove it without pulling the turbo and drilling it. Something else is wrong here, either you have the hoses hooked up wrong or some such. Uncontrolled boost is a sign the boost controller isn't. Unplug the controller and see what it does. That should put it to wastegate spring only and limit you to approx 10 psi.
Whoops, didn't realize that (hand)
Listen to Darth. It is highly likely that you switched some vacuum lines when you removed the MBC and tried to go back to stock, or something else is amiss.
The restrictor has nothing to do with your problem. It's purpose relates to the internal crankcase pressure relief through the PCV valve system. This is not the same as proper operation of your boost control solenoid.
As of right now, the boost controller is totally off... I used my friends MS3 as reference to putting back the way it was (stock)... I will go ahead and take a pic and I hope someone can see a problem, I might have done something wrong... Thanks for helping me out, hope I get this fixed quick...
...Darth Vader
Member
I'll run it down for ya, this is straight out of the FSM, sec 01-13b-10:
The hose off the top (small) nipple on the wastegate actuator (WGA) goes to the furthest forward nipple on the controller.
The second hose on the controller goes to the turbo inlet pipe fitting.
The hose on the big nipple on the bottom of the WGA goes between the compressor scroll fitting and the WGA nipple.
Make sure nothing's pinched or cut.
The hose off the top (small) nipple on the wastegate actuator (WGA) goes to the furthest forward nipple on the controller.
The second hose on the controller goes to the turbo inlet pipe fitting.
The hose on the big nipple on the bottom of the WGA goes between the compressor scroll fitting and the WGA nipple.
Make sure nothing's pinched or cut.
- :
- 06 LS MS6
07 BM GT (shell has been struck from the roll)
like this?
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I noticed that the hose on the bottom of the WGA was capped off as well as the nipple, found the problem... Went ahead and attatched both ends of the hose where need be, took off negative terminal off battery for a few seconds, drove the car a bit, and the car is now running fine with casual spiking to 17-18psi... Thanks for your help Darth Vader, hope to PM you with other problems in the future if anything...
Darth Vader
Member
Holy ****, who did that? That retard needs a good kerb-stomping. That's asking to blow your engine to pieces. The bottom fitting needs to be the one connected to the scroll, or to the manual boost controller, if you control boost that way. The top nipple gets capped if you run mbc.
Double facepalm. Some people shouldn't be trusted with the keys to the car, much less tools and an inclination to mod.
Double facepalm. Some people shouldn't be trusted with the keys to the car, much less tools and an inclination to mod.
