For some reason when my car hits peak boost the boost will then drop to 16 psi and slowly climb back up. This causes the car to go lean and also feels extremely slow. Im thinking that the wastegate is opening prematurely or something because I cant find any boost leaks and my fuel isnt the problem. I have another wastegate so I can just exchange them ad see if this fixes the problem. DO you gys have any other suggestions to check for?

 

Sure your not hitting fuel cut?

Is this car tuned?

 

x2
also give us a mod list, including what you are using for boost control.

 

Any boost leaks?

 

No boost leaks.

Currently getting tuned by mellon and i was hitting boost fine before on the tune.

Mod list:

FP Green
Hks cams
LICP
Ported Ex. Mani
Cone Filter
850 Injectors FIC
Walbro Fuel Pump
02 housing
3 inch exhaust

I think thats all my mods

 

did you check the fuel pressure regulator hose yet?

 

yes i did. Its not that. Its my boost controller. I unhooked it and my boost doesnt cut anymore and of course goes way past 25 pounds so i have to let off but before it wouldnt even hit 20 psi so I know this is what it is.

I am just not sure if the vacuum line is torn or if the boost controller went bad. Does anyone know where to get a replacement vacuum line and how to check if the boost controller is working properly

 

what kind of boost controller is it? ball and spring? please don't say bleeder valve.

 

bleeder valve? I believe its a ball and spring. Its a hallman pro

 

old school boost controllers are bleeder valves, its like a controlled boost leak.

hallman pro is good. Ive had mine hang up before tho inside. to check just open it up and make sure the ball is not wedged inside the spring. be sure to do this inside (your house) so you dont lose the ball or spring, the ***** very very small.

 

ok thanks Ill check that. If it happens to be the vacuum line is torn. Do you know where they have replacements?

 

If its just vacuum line your local auto parts store will have line for you.