As the title says im not being able to make anymore then 18psi im tuned on AP stage 1 93
this just randomly happen i was being able to make 22-24psi as the map is set up for.
and yes i already checked the vac lines and intercooler piping not leaks there
Any input is appreciated
thanks

 

is it peaking and holding at 18 or is is bleeding off to 18? Any other changes? How does it feel? Check that everything is tight...

 

its just peaking at 18psi if that it feels a little slower and yes i checked to see if everything is tight
it will let me get like 22psi every once in a great while
i tried reseting the ecu and running a different ap map but its all the same

 

Give it more gas lol

 

boost pill removed?

 

nope never messed with boost pill

 

Sticky / bad secondary (passive) solenoid if there are no boost leaks and it sometimes makes normal boost. Make sure the vac lines are not pinched, especially the ones that dump back into the intake pipe.

 

Thats what i was thinking that its the boost solenoids....I order new ones from Mitsu there only like $100 so its not to bad
There suppose to be in today or tomorrow i will keep u guys updated on the situation
Thanks for the input everybody

 

Dang son, you could have gone to a 3port plug and play for that money (Literally, I paid 100 shipped for my tactrix version of the peirburg 3 port).

Anyway, report back, check over all the lines while your replacing everything.

Could also be an issue with the wastegate not sealing all the way but would think you would notice real slow spool if that were the case.

 

yea i know i could of got a 3 port but its all good
yea ill check the lines again
im waiting on my manual boost controller to see if it is seal

 

heres the update so i did get the new boost solenoid and installed it but it still didnt work it spools quicker but its still at around 18-20psi
i also got my hands on a turboXS manual boost controller i hooked it up and will test it in the morning cant do it right cause my cars to damn loud and i would wake everybody in the subdivision lol

 

not to thread jack (but i am), im having the OPs problem except worse. Im only hitting 13 pounds at WOT. confirmed via my actual boost gauge and via AP logs (boost was pegged at 12.9).

How do i know or test for "sticky/bad secondary (passive) solenoids"?
i already had a shop do a boost leak check and confirm there are no pinched lines. They checked the wastegate actuator and the stock dv valve. they basically said its either one of two things, the turbo is going bad, which is highly, highly unlikely or the boost solenoid is malfunctioning in some fashion.

 

UPDATE!!
The manual boost controller helped am being able to hold 22psi no problem now
JBLADE I recommend u try a manual boost controller

 

This happened to my friend too. I'll direct him here. We never quite fixed it.

 

thanks for the update but i'd still like someone to tell me how to check the solenoids. I mean, a manual boost controller shouldn't be necessary for a car that normally does just fine with ecu controlled electronic boost control.