Boost leak??? Need help!!!!

[Madcap]

Hey guys, this is my first post here so Hi to everyone, and I hope someone can help me out. Yesterday I installed upper and lower GReddy IC pipes, a GReddy RS BOV and an Injen intake on my 97 GST. I finish up and taker her out for a spin. Right off the bat when I accel. I lost all boost pressure when the stock gauge hits 3/4 and if I keep on the gas the needle keeps going. Now I've looked the system over top to bottom MANY times and can't find anything wrong. I swooped out the upper tube for the stock tube and BOV and I get the same. So, its not the BOV. Could it be the IC itself? Thats really the only thing I havent take out to inspect real good. Any help would be great. Ive spent close to ten hours installing and unstalling and instsalling again to come up empty. Where the hell is the boost blowing out?????

 

[90AWDEclipse]

Do a boost leak test. This is way easier than installing and reinstalling parts over and over agian.

(How to make a tester)

http://www.vfaq.com/mods/ICtester.html

Alex

 

[MrBoxx]

As mentioned, doing a boost leak test is the only sure way of diagnosing where the boost is leaking out.

Also, just to clear up a few other things before anyone jumps down your throat about it:

1. You're recirculating your BOV and not venting it to atmosphere, right? Venting to atmosphere is frowned upon unless you have the proper set-up to do so.

2. As soon as you can, your next modification should be an aftermarket boost gauge. The stock boost gauge on these cars is more for entertainment purposes than for reading actual boost. You don't know if you're boosting to 5psi or 15psi.

3. When you take off the intake to do a boost leak test, humor me and check your turbo for shaft play. Try to wiggle the compressor wheel of the turbo with your fingers: up and down, side to side, in and out. A very very small amount of side/side shaft play is okay, but a good amount is indicative of a failing turbo. From what I've seen on this site, there are plenty of cars with stock turbos that are starting to fail, so keeping an eye on the health of your turbo is probably a good thing to do. I try to check mine every month so I know when it's time to replace it.

4. Fill out your vehicle profile so the next time you ask a question, everyone can see what mods you have installed so you don't have to re-list everything every time you post a question. I find it's a good way to keep track of what mods are installed on the car, because if it all weren't written down, I would forget.

Good luck with your boost leak test.

 

[Eastwood95]

 

[Madcap]

As mentioned, doing a boost leak test is the only sure way of diagnosing where the boost is leaking out.

Also, just to clear up a few other things before anyone jumps down your throat about it:

1. You're recirculating your BOV and not venting it to atmosphere, right? Venting to atmosphere is frowned upon unless you have the proper set-up to do so.

2. As soon as you can, your next modification should be an aftermarket boost gauge. The stock boost gauge on these cars is more for entertainment purposes than for reading actual boost. You don't know if you're boosting to 5psi or 15psi.

3. When you take off the intake to do a boost leak test, humor me and check your turbo for shaft play. Try to wiggle the compressor wheel of the turbo with your fingers: up and down, side to side, in and out. A very very small amount of side/side shaft play is okay, but a good amount is indicative of a failing turbo. From what I've seen on this site, there are plenty of cars with stock turbos that are starting to fail, so keeping an eye on the health of your turbo is probably a good thing to do. I try to check mine every month so I know when it's time to replace it.

4. Fill out your vehicle profile so the next time you ask a question, everyone can see what mods you have installed so you don't have to re-list everything every time you post a question. I find it's a good way to keep track of what mods are installed on the car, because if it all weren't written down, I would forget.

Good luck with your boost leak test.

I am recirculating not venting. I already have a boost gauge and was planning to install it among others after this install. I'm picking what I need for the boost tester today and will be testing it soon so I'll let you know what I find out and I'll do that check on my turbo.

 

[89ColtGL]

3. When you take off the intake to do a boost leak test, humor me and check your turbo for shaft play. Try to wiggle the compressor wheel of the turbo with your fingers: up and down, side to side, in and out. A very very small amount of side/side shaft play is okay, but a good amount is indicative of a failing turbo. From what I've seen on this site, there are plenty of cars with stock turbos that are starting to fail, so keeping an eye on the health of your turbo is probably a good thing to do. I try to check mine every month so I know when it's time to replace it.

I agree 100%. Prior to taking my car to the track I did a boost leak test and found side to side shaft play.

Needless to say 2 weeks later I was leaving smoke clouds everywhere. Better safe than sorry.