please help, low boost

[turbomoe]

my car is only showing that i can only get 8psi, it is a 95 bone stock gsx, it always boosted at15, no i changed the bov and still same problem,

i even unhooked the wasted gate vacum and only got 9 psi, what can it be please help

 

[viperlp01]

He was calling me all yesterday on this... I told him to do a boost leak test with throttle plate open, I told him to check the wastegate arm and make sure it is on the flapper, I told him to tug on the arm(he said it was tight like a spring), Then i told him he needs to take the o2 housing off and inspect the flapper and make sure it didnt break off.

There just ins't that many things outside of the wastegate and intercooler piping that will cause him to only get 8 lbs... It has to be related to the turbo/wastegate assem.

 

[turbomoe]

Anser ## Phone John-ie Blaze, I Need That Mass, I Dont See How It Could Of Broke Car Sat And Was Never Drived Hard

 

[kiddd]

It sounds like a boost leak to me. Test it out! Just reroud the hoses and see if you get 15psi then. i helped a buddy reroute his vacuum hoses and it was easy. Good luck

 

[tjbiker031]

i did a boost leak test yesterday and everything seemed to check out ok but i will check my lines again to make sure everything is good.

What did you pressurize the system to? Are you sure your lines are not hooked up backwards? What MBC do you have, maybe its defective...?

 

[boostforfun]

Anser ## Phone John-ie Blaze, I Need That Mass, I Dont See How It Could Of Broke Car Sat And Was Never Drived Hard

If i had a dollar for everytime I head that from a DSM owner.... I would have a lot of dollars.


It literally has to be a boost leak or something with the wastegate actuator or flapper... nothing else makes sense. Maybe flapper is not broke, but not closing all the way because of deposits or something....

 

[viperlp01]

I wish i could look at this car. I would fix it in an hour... MOE YOU NEED TO CHECK THE FLAPPER... Im telling you..

 

[ilco187]

another source for boost leaks is the egr, whats the condition of you're egr, it could be opening and allowing air to bypass directly into the exhaust.

another thing i have seen is the turbo shaft nuts coming loose and allowing one side to spin faster than the other, but that's rare

are you still using the oem boost solenoid or have a MBC, you could try routing the hose directly off the turbo output into the wastegate and see what happens it should control boost off manifold pressure

have you took off the o2 housing to see the condition of the wg flapper and see if it has a small piece missing or if it has misaligned onto the hole, not seating right.

just some insight.

 

[turbomoe]

Hahahah Check This Out Problem Solved, Jonie Is Not The Freakin Flaper, And Everyone Else Who Says Boost Leak Lol, Its Not A Boost Leak, Lol Poor Dsms Everyone Blames It On Boost Leaks, So Check This Out I Fixed The Issue By....... Driving My Car With Another Boost Gauge, The Boost Gauge Was The Issue, I Was Telling Me 8psi When It Was Realy 17 Psi, And Hooking Up A Unhacked Mass Did A World Of A Differnce To My Car It Has A Bad Ass Launch And Smooth Idle, I New It Wasnt A Boost Leak I No How A Car Runs With A Boost Leak, But I Just Got Out Of A V8 And Got Into A Turd Gsx, With Boost Still Slower Than The Stang, But Makes Me Giggle Everytime I Hear The Hks Ssq, But Thank You Everyone For Helinping Me, And ## Suggestions, But Sorry For All The Caps, My Work Comptuer Keybord Onlly Works This Wway .....


Turbo-moe

 

[turbomoe]

Ilco187, U Have The Sickest 1g I Ever Seen, I Usaly Could Never See My Self Driving A 1g, But Ill Drive The #### Outa Urs Man, Props That Boy Is A1