HELP - New Blow off Valve Problems

[civileclipse]

Okay first off, i'd like to apologize if this issue is addressed on a daily basis.. I searched the forums, but I couldn't find anything about my problem. I have a 95 Eclipse GST, with a 16G turbo. I just installed the GReddy Type S Blow off valve, and when I go to boost it just keeps going. Before I installed the new blow off valve I would hit about 12-13 psi full throttle, whereas now I spike up to 20 and higher if i keep pushing the gas. I bought the intercooler piping as well, so it bolted right up to the blow off valve (dont know if this matters..). But i double checked all the hoses and what not and i can't figure it out. I have the tube coming off the blow off valve going to the right place, and everything seems to be tight. Do i need a boost controller since i have a new blow off valve? Or is there something i'm missing? Please help.

CivilEclipse

 

[92awddsm]

Double check your line going to your wg actuator and boost controller if you have one. You might have torn the line going to the wg or even installed your boost controller backwards. And get your profile corrected. Greddy turbo and 3.5 exhaust? No supporting mods to go with that or is it just bs?

 

[eclipse08]

You shouldn't need a boost controller just because you have an aftermarket bov. It sounds like you either have a vacuum line not connected, a torn vacuum line, or a vacuum line connected to the wrong spot. Pictures of how the bov is installed on your car would help diagnose the problem.

 

[JoeyJigglesGSX]

so your is just spiking to 20? or is it creeping? does the psi go back down to where you have it set at? or does it hit what you want and then keep rising till it seems like no end?

 

[civileclipse]

As far as I can tell, the vacuum lines aren't damaged. Perhaps I connected the line off the blow off valve into the wrong spot. As you can see in the pictures below there's two places that a tube can be hooked to, and I hooked it into the top one. (Maybe it should be the bottom one? Or maybe I should put a plug in the bottom on because it's letting out air?) And in response to JoeyJigglesGSX, it spikes to no end, I had the pedal about 3/4ths of the way down and it was heading towards 20 PSI so I backed off as quick as possible. Hopfully these pictures will help in diagnosing the problem. Thank you for responding : )

(I also apologize for the dirty engine compartment, i've been doing a lot of work on this vehicle and this is the next area i'm trying to fix so as soon as i resolve this problem i plan on cleaning it up a lot : ) Also, my AIM screen name is TheJibberish.

 

[JoeyJigglesGSX]

ok, i had a similar problem but not when i put a blow off valve on...something just doesn't sound right...did you happen to put that intake on your car and experience the problem? or do it at the same time?

the reason why i say this is because when i had a stock turbo, greddy type-s bov, and exhaust i was fine...once i put on my injen i could not control my boost what so ever...it was doing exactly what yours is doing right now...i bought a hallman pro boost controller for like $90 and it fixed it instantly

 

[GSX20]

Where is your line coming from that goes to the wastegate actuator?
If it's not coming from the compressor housing or j-pipe or some other source then you need to tee that line from the bov to the intake manifold and run another line down to the wastegate actuator. I didn't see a tee in that line in your pictures.

 

[civileclipse]

JoeyJigglesGSX yes i had to take the intake off in order to put the upper intercooler pipe on. I already had it before I had the blow off valve and it worked fine. Maybe when I put it back on I didn't do it properly? It seemed to be fine but.. GSX20 the blow off valve came with a 3 way splitter, is that what you're refering to? So i should put that in where i have the hose coming out, and then run the line down to the actutator? Or should I run the line from the stem pointing downwards off the blow off valve (last picture) down to the actuator?

 

[civileclipse]

Okay I checked the wastegate and the hose coming off of it is running into a little electric device ( which i'm assuming is the boost controller ) and the other tube coming off of it is going into my cold air intake on the side.. I checked the hoses and they seemed to be fine. I can't figure out why it would limit my psi to 13 with my old blow off valve and this one it doesn't? Maybe I do need a manual boost controller...

 

[VBGSX]

The BOV has nothing to do with your problem.
Something else has changed. Probably while you were installing the pipe something was reconnected wrong or unplugged.

Your other questions. The BOV is connected correctly from your pic. Leave it as it is.
Now go down and take a pic. of how you have the wastegate connected as well as the BCS and where that line is going to.
I'm leaning towards you knocking something loose when you put on the new intake. The vacuum lines and T's run right under the intake.

Good luck

 

[civileclipse]

Alright I took some pictures of the wastegate and the boost controller. The gray line going into the boost controller can be seen going into the wastegate in the bottom left hand corner of the second picture. I also looked around this morning to see if anything was loose or dangling and I didn't see anything.. Is it okay to drive on this as long as I don't boost too hard?

 

[92awddsm]

Alright I took some pictures of the wastegate and the boost controller. The gray line going into the boost controller can be seen going into the wastegate in the bottom left hand corner of the second picture. I also looked around this morning to see if anything was loose or dangling and I didn't see anything.. Is it okay to drive on this as long as I don't boost too hard?

The bottom line should be t'd to the wg and to a boost source(nipple on turbo or j pipe). Looks like you just have it going from the wg to the boost control solenoid and the other end to the intake pipe, right? With it routed that way, you dont have any boost reference to operate the wg so it will never open.

Look at this link and in the first picture, you will see the proper routing of the wg line.
http://taboospeedshop.com/emissions1.htm

 

[civileclipse]

I'm having a hard time reading that top diagram since it has such small text.. T off the line coming from the wastegate to the boost controller and re-route it.. where?

 

[oldman]

Let me see if I can help. Run a hose from the turbo outlet pipe nipple directly to the wastegate actuator nipple and tell us what you got.

 

[civileclipse]

alright.. So I T'd into the wastegate line going into the boost controller, and connected that into a T on the line coming off of the blow off valve. The result is that the boost controller works now, and stops at about 11 or 12 PSI, but the blow off valve sound is kind of a sputtering, like a psshht ppshtttt tttttt.. rather than the high pitch sound I had when it was boosting to no end. Please help : )

 

[oldman]

If I understand what you mean, you simply bypassed the mbc, not fixed it. If you are sure the mbc was hooked up correctly then what you just did confirms you have a defective mbc.

 

[VBGSX]

I can hear exactly what your BOV sounds like
That was actually pretty good description and it brought back memories...
You may just have to readjust your springs tention in the BOV.
Loosen the jam nut and readjust it with the hex key(allen wrench)(probably needs to be loosened).

 

[civileclipse]

Well, if I completely bypassed the boost controller then why is it being controlled now? And I did try to adjust the sound and.. it still sounds funny : / It was set perfectly to a high pitch sound before I fixed this boosting problem and now that it's stopping at 12PSI or so it's making a weird noise : (

 

[oldman]

Well, if I completely bypassed the boost controller then why is it being controlled now? And I did try to adjust the sound and.. it still sounds funny : / It was set perfectly to a high pitch sound before I fixed this boosting problem and now that it's stopping at 12PSI or so it's making a weird noise : (

Because you're running the stock actuator spring. You said:

I T'd into the wastegate line going into the boost controller, and connected that into a T on the line coming off of the blow off valve.

By doing this, it's the same as bypassing the mbc because your wastegate line is now connected directly to the T on the BOV line without having to go through the mbc. Unless I mis-understood what you meant?

 

[92awddsm]

Ive only got one question. Why does everyone keep saying boost controller or mbc? From the pics that was showed, he has no boost controller at all. He is still running the stock boost control solenoid which is totally different than a boost controller. But once again, now it seems to be connected semi properly since you now are connected to a boost reference(bov line) which is operating the wg. There are better ways to run it on a stock setup but that way will work fine also. 11-12 psi is where it should be without a boost controller so it will be fine. As far as the bov sound, it will sound different at 12psi than it will at 20 psi. thats normal also.

 

[oldman]

Ive only got one question. Why does everyone keep saying boost controller or mbc?

For me, because he keeps saying mbc and I don't know about you guys, all I see in the pics are blue hoses and everything else is black out. Have fun with this one.

 

[olmytsi]

U need to find a person to reconnect those vaccuum hoses for u the right way. If you have a digital camera, i suggest taking pics of stuff you are working on so that you can look at the pic to see how to hook it back up.
Your bov is too tight, loosen it and it wont go pss pssss psss My friend has a 240 with an sr20det and his type s is tight like that. That sound is actually better than the high pitched sound in my opinion, but a tight spring means your turbo will surge and will die prematurely.

 

[JoeyJigglesGSX]

hey sorry man for not responding in a while...but i haven't read the past responses, but from the last time i spoke with you def. get a boost controller and i promise you it will fix it...because you said you put on the inake when you did the bov...let me know

 

[civileclipse]

Thanks for the replies, and yes I am on the stock boost control sylenoid, I just purchased a Joe P MBC on friday, so I should have that soon. I'll try to adjust the spring on the blow off valve again and hopfully get the old sound back. But when I first put it on, even at very low boost I could still hear the high pitched squeel. The settings on the blow off valve never changed, but as soon as I t'd those two lines the sound did.

 

[JoeyJigglesGSX]

keep me updated