Way to much boost.

[97ClipseGSX]

Hey guys I gotta a question. So anyways my old turbo went out and I jumped on the opportunity and got a E16g. Hooked everything up and when I took off down the road I put it in 2nd to give it a pull to see what psi it was set at. It shot around 30 before I could get my foot back off the gas. I know thats a bad thing considering Im still stock fuel injectors and no MBC. Basically I was wanting to know if there was any tricks or ideas I could do to fix this problem. Im on a very very tight budget at the moment and just want my boost to where my injectors can manage it. Any thoughts would be highly appreciated. Thank you.

 

[nelliott500]

The cost of making an MBC is like $20 at the most.

http://www.vfaq.com/mods/wayback/mbc.htm

 

[Dsmkauai]

What kind of wastegate setup are you running and is it stuck closed possibly?

 

[Breezio69]

Is the wastegate working properly or did you check it before you put it in? What is the wastegate pressure supposed to be at when it opens or what lb spring is in it? Is your wastegate hooked directly to the j pipe or somewhere else that its not getting a direct boost signal?

Sorry for the questions, but its a shot in the dark otherwise

Edit; also, in regards to the first response... this is an over boost issue, not something an mbc will help with since that tricks the wastegate to run MORE boost

 

[97ClipseGSX]

What kind of wastegate setup are you running and is it stuck closed possibly?

Its the internal that was meant for it. When I shipped my old one off for a rebuild he ended up selling me this one for a decent price. He said he wasnt sure what spring was in it, It was super tight though.

Is the wastegate working properly or did you check it before you put it in? What is the wastegate pressure supposed to be at when it opens or what lb spring is in it? Is your wastegate hooked directly to the j pipe or somewhere else that its not getting a direct boost signal?

Sorry for the questions, but its a shot in the dark otherwise

Edit; also, in regards to the first response... this is an over boost issue, not something an mbc will help with since that tricks the wastegate to run MORE boost

I tried pushing open the flap but couldnt budge it. The wastegate actuator is hooked up normal. The guy sent it back to me like that, I didnt mess with it, Just bolted everything up correctly and that happen.

 

[gusu]

The cost of making an MBC is like $20 at the most.

Dark Lightning

That method does work but it is not exactly the most consistent way to make boost. When I still had mine it would fluctuate pretty bad at times, other times it would work great. This seems to usually be the case with most of those style boost controllers I've seen.

 

[Breezio69]

Id personally have him rebuild your turbo as was intended and send that one back to him... seems kind of weird to me that you send a turbo for service and he just has one laying around to sell you in exchange??? Just seems off to me... plus being a "rebuilder" and not knowing anything about it, the wastegate is kind of a big part to know, could be 8 lb spring or set up for a drag car at 30+

 

[tin_tin13]

You should be hitting fuel cut, but anyways I wouldn't drive it like that and risk blowing the motor. Also what do you mean it's hooked back up normal? You running a hose from the wastegate to jpipe or compressor cover nipple?

 

[Dsmkauai]

Ok if the wastegate arm is adjustable you need to lossen it a lot, and if that doesn't help ask the rebuilder for a 7-12psi acuator. And until you fix this problem stay out of boost or you risk blowing something.

 

[97ClipseGSX]

Well he sells turbos as well. Thats his profession. Hes been a buddy of mine for a while and when he went to rebuild mine, He didnt have any 16g wheels at the time so he gave me the choice of a 20G or a E16G. I asked him about it and he said it sounded like I hit boost spike. Im gonna try and run a vacuum line off the Jpipe as well and see what that does. Ill let yall know what happens.

 

[taz4432]

Well he sells turbos as well. Thats his profession. Hes been a buddy of mine for a while and when he went to rebuild mine, He didnt have any 16g wheels at the time so he gave me the choice of a 20G or a E16G. I asked him about it and he said it sounded like I hit boost spike. Im gonna try and run a vacuum line off the Jpipe as well and see what that does. Ill let yall know what happens.

How do you have it hooked up now? What is your BOV hooked up to? What is your WG hooked up to?

Do you have an air compressor? A stock WG for these turbos is what...10psi spring pressure?
Hook an air compressor with a regulator up to the WG and slowly turn the pressure up until you hit the pressure the WG opens at and there you go, you know what pressure spring you have.

 

[Clutch450]

Definitely not boost spike. A boost spike is a lb. or two not 15psi more then what you should be at.
First off make sure your wastegate is actually functioning properly and opening. Then install yourself a MBC.
Don't keep running the car the way it is, unless you want to rebuild more then the turbo.

 

[97ClipseGSX]

I installed the PR FMIC and hooked up everything the way it was originally. There was a nipple on the jpipe I plugged because I read that that was for a MBC. The guy told me to hook a line from the jpipe to the wastegate. Would that fix or help anything?

 

[Dsmkauai]

So where is the wastegate hooked up to now? Your supposed to have one line from the wastgate to a boost source (j-pipe) and if you have a boost controller it would go in between. And what kind of wastegate is it? The bottom line is the wastegate acuator spring is way to tight for your setup. You need to either lossen the acuator arm till it just slips over the flapper arm or you need to find a oem evo3 acuator.

 

[WES_393]

Do you have a vacuum/boost line going to this port?

 

[97ClipseGSX]

Do you have a vacuum/boost line going to this port?

Yes, I have the one going into there. But the Jpipe is plugged. So I run a hose from the Jpipe to the WG? Then what about the sensor that the hose hooks up into from the WG?

So where is the wastegate hooked up to now? Your supposed to have one line from the wastgate to a boost source (j-pipe) and if you have a boost controller it would go in between. And what kind of wastegate is it? The bottom line is the wastegate acuator spring is way to tight for your setup. You need to either lossen the acuator arm till it just slips over the flapper arm or you need to find a oem evo3 acuator.

Yes, I know the springs way too tight for me. Any Ideas on where I can get a Evo 3 WG? And Can I take one off a turbo thats not the same and it work??

 

[Breezio69]

Unplug the j pipe, the wastegate line goes to there...

Bov line comes off intake manifold...

That's just about it. When you add a boost controller all you do is splice it inline with the j pipe and wastegate. Simple.

If its routed any other way its wrong

 

[99ECLIPSEGSXDSM]

You don't have to worry about the sensor. Just run a line from pipe nipple to wastegate

 

[Dsmkauai]

Is the wastegate on the turbo now adjustable at all? Look at the rod connected to the flapper and going into the acuator. Does this rod have threads and a nut on it by chance? If so this is the place where you can get some adjustment. Have you taken the acuator arm off the flapper to see if the flapper moves freely?

 

[97ClipseGSX]

Is the wastegate on the turbo now adjustable at all? Look at the rod connected to the flapper and going into the acuator. Does this rod have threads and a nut on it by chance? If so this is the place where you can get some adjustment. Have you taken the acuator arm off the flapper to see if the flapper moves freely?

No, Its not adjustable. Is there a way that I can check the flapper with everything still bolted up? Dont feel like taking everything back off and having my oil shoot everywhere.

Unplug the j pipe, the wastegate line goes to there...

Bov line comes off intake manifold...

That's just about it. When you add a boost controller all you do is splice it inline with the j pipe and wastegate. Simple.

If its routed any other way its wrong

Ok, yea I have that part routed up wrong then. ill check it your way and find out what happens.

 

[Breezio69]

Yeah hook it up where I said and then take it for a spin. The wastegate on my 16g is 10psi. Yours should be the same if it hasn't been changed... then later on down the road you can add an mbc by cutting that line between the wastegate and j pipe and installing it there. The mbc alters the pressure from the j pipe to the wastegate to allow you to run more boost...

 

[Dsmkauai]

It wont make a difference with the vac line routed correct. The spring pressure in the is either to strong already or is stuck closed if your seeing that much boost. Take the cotter pin or c-clip off where the actuator arm connects to the wastegate flapper arm. Then simply pull the actuator arm off, once off try to move flapper back and forth. If it won't move than thats the problem the wastegate is stuck closed and thats why your building so much boost. The arm should freely move back and forth. If it does than the wastgate actuator is at fault and needs to be checked or replaced. But I'd be leaning towards the flapper is frozen shut.

 

[97ClipseGSX]

Ok, I got everything back on a pretty. Hooked it up the way its supposed to. Im bout to test everything out and let yall know whats the deal. I appreciate all of yalls advice. Quick question though. I couldnt switch WGs if that was the problem could I? I have one off of a T25 sitting here thats perfectly fine. It was set at 13psi. Id rather be at 13 then 30+. Not trying to sound dumb or anything for asking. Just wanted to know.

 

[Dsmkauai]

Probably wouldn't work without modifying it. Did you check the flapper for movement yet?

 

[97ClipseGSX]

Probably wouldn't work without modifying it. Did you check the flapper for movement yet?

Yea, it moves. boost still is messed up though. It takes a few RPMs to spool up, but when it does its crazy fast. Past my limit.