Wategate problems.. Help!!

[Smallfry311]

So I went to install a boost controller on my t25 today, and no matter how much I turned it up the turbo would still only boost at about 12psi. So, I yanked the hose off of the wastegate to see if it was actually possible for my turbo to boost higher, and it still boosted the same!! Is my wastegate clogged or something?

 

[Smallfry311]

hahah yeah, an mbc but when i hooked it up it did nothing.

 

[black_gst]

how do you have it hooked up?

 

[96eclipzGsT]

Turning up the boost without any mods ends in failure. The reason it doesn't go past 12psi is because you have the stock 2g BOV and it won't hold anymore than that. Its not the wastegate.

 

[anmGST]

Are you using any tuning source or do you plan on blowing up your car today?

Best post I've seem in while , An I agree with the above stock BOV can not hold the pressure..

 

[Smallfry311]

But, wait, Shouldnt I still be able to turn down the boost? its not letting me go higher OR lower than 12psi

 

[black_gst]

no you cant turn down the boost... the lowest it will go is to wastegate pressure only. if you pull your wastegate off it will boost lower... i dont remember what stock wastegate pressure is it been a long time since i have anything stock, but im guessing its around 9 psi so 12 psi's of boost is about right

 

[1995GSTEclipse]

To see what the stock spring is set at, take the hose that comes off the turbo inducer housing and run that straight to your wastegate. If you have an aftermarket boost gauge, look to see where it goes at full boost. Some people also "crush" their BOV's .

 

[Smallfry311]

oh okay I get it. Thanks

 

[1995GSTEclipse]

The basic function of the "wastegate" is to allow exhaust gas to go around the turbo instead of through it, which allows the turbo to stop making more boost. In other words, the wastegate is what allows you to control the boost level.

"Blowoff valves" are used to prevent compressor surge, a phenomenon that readily occurs when lifting off the throttle of an unvented, turbocharged engine. When the throttle plate on a turbocharged engine closes, the high pressure air in the intake system is trapped by the throttle and a pressure wave is forced back into the compressor. The compressor wheel slows rapidly and may even stall, and the driver will notice a fluttering air sound. The rapid slowing or stalling stresses the turbo and imparts severe turbo lag if the driver accelerates immediately after the surge event.

 

[Smallfry311]

alright I'm not an idiot, but thanks i guess..

 

[1995GSTEclipse]

alright I'm not an idiot, but thanks i guess..

I am sorry, I was not implying that you were "dumb". I have heard of people talking about their wastegate as the BOV and vise versa. I just wanted to make it clear.. Again, I did not say that to question your intelligence.

 

[Smallfry311]

Yeah hahaha i just hate it when I go to forums and people talk down to me because im only 16. When i first got my car, the next day i was pulling the tranny out for a drivetrain rebuild

 

[1995GSTEclipse]

Yeah hahaha i just hate it when I go to forums and people talk down to me because im only 16. When i first got my car, the next day i was pulling the tranny out for a drivetrain rebuild

Is that because you were driving like your age?

 

[Smallfry311]

Lol, Exactly. but no, I only race when im at autocross.

 

[nyTalonTsi]

Do the BCS removal and thats it.

If you want more boost, upgrade the turbo along with supporting mods.

 

[1995GSTEclipse]

Do the BCS removal and thats it.

If you want more boost, upgrade the turbo along with supporting mods.

Here is my turbo. Get one BIGGER than this.. This one is only good for about 550hp with the right supporting mods!

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[Smallfry311]

hmmm if only i had money. its kinda hard when you cut grass for a living