Cant hit over 10 psi of boost (newbie)

[Drift_s13_240sx]

Hey guys my name is Brad and im a newbie to this website this topic may have been brought up many times befor if so im sorry. I recently bought a s13 coupe with a sr in it. I have a blitz blowoff valve and I put a manual boost controller on it. I just cant get it to hit more than 10 psi and after it hits 10 psi it slowly starts dropping till it gets around stock boost. The guy who did the swap said it might have the stock boost controller sitll on it but i cant seem to find it on the firewall. Am i looking in the right place or does anyone have any other ideas of what it might be. I have also checked the intercooler for boost leaks and cant find any. Thank You for any help you might have

[the head]

follow the hose off of the wastegate see where it leads

another possibility is that you have a crap MBC that cannot bleed off air fast enough so therefor it is constatnly pushing past to the WG as airflow increases

[WILDACEX187]

sounds like the actuator to me

[Drift_s13_240sx]

What is the MBC ? Not familliar with that term. If it is the actuator is there any way to fix it or do i have to replace the whole thing>

[240silvia]

MAN U ARE A NEWB! take the letters and figure out what it might mean m=manual, b=boost, and c= controller, its not that hard. and if u cant figure out if ur sr has a stock boost controller on it then u should not of bought the damn thing!

[the head]

Manual Boost Controler

no you would have to replace the actuator

[tegasaurus]

i have the same problem with my SR. homemade MBC from ace hardware :naughtyd: However the boost goes from 10psi back down to 7 in upper 3rd gear, then from there on, 4th gear or 5 th gear, 7psi is as high as it'll go.

[97SilviaRB]

Pull the line to your wastegate and see if it will go over 10 psi

(i really hope you dont follow my advice)

[Campos]

with cheaper mbc's it will evetually level back out at the stock wastgate spring, which is 7psi, get a hks upgrade kit....works good!!

[Drift_s13_240sx]

Hey 240 silvia man give me a break alright. I dont understand why it is that someone always has to jump in and try to make someone look stupid. I dont see you giving me any valuable info so whats your point in posting in this discussion anyways. I dont know much about the car yet and if i would have been the one to do the swap i could tell you where everything was but i didnt do the swap so thats why i ask for help.

[IGSDann]

Hey 240 silvia man give me a break alright. I dont understand why it is that someone always has to jump in and try to make someone look stupid. I dont see you giving me any valuable info so whats your point in posting in this discussion anyways.

Welcome to Zilvia, do you expect any better from the members? If so you will be sorely disappointed.

[thewhitewrx]

MAN U ARE A NEWB! take the letters and figure out what it might mean m=manual, b=boost, and c= controller, its not that hard. and if u cant figure out if ur sr has a stock boost controller on it then u should not of bought the damn thing!
oh god, give him a break, many turbo cars come with a solenoid to control boost, often mated to the ECU, just let the guy be and help him out. yes you know a lot, no you dont own the forum. if you want to be an ass post in OT. im new to 240s as well, so im sure ill ask a few dumb questions

[420sx]

you need to get HKS wastegate acuator, u can adjust it to run 11 psi constantly (make sure u have supportin mods tho !)

[WILDACEX187]

cant u run 11 psi on a side mount and 370 injectors?

[the head]

If you don't like being mocked than go somewhere else or god forbid serach before you post and just possibly learn the vocab so you dont look like a douche. as for WRX i have yet to see a useful post from you two step plan for respect on zilvia 1. search and learn 2. post educated questions

as for that last question just do it and learn

[WILDACEX187]

well im asking because i know somebody pushing 12 on a sidemount. he has full exhaust though.

[s14 blacktop]

man going more than 10 psi on stock smic is asking for it...maybe when its cold it might be ok but i'm not gonna try it..

[katbak]

where under the hood is the wastegate because i never ever found that out...
and 420sx ive seen your sig so much but everytime it amazes me... that chick will break her back getting out of bed one day...

[420sx]

ummm yea she says that every morning.

[thewhitewrx]

If you don't like being mocked than go somewhere else or god forbid serach before you post and just possibly learn the vocab so you dont look like a douche. as for WRX i have yet to see a useful post from you two step plan for respect on zilvia 1. search and learn 2. post educated questions

as for that last question just do it and learn
ah true the search button is your friend. ps i guess the only useful tech post ive made was the one the wrx exhaust manifold, and the one i just made on factory boost control units. but then again i have 7 fucking posts. his first post was legitament anyhow.

[the head]

I really dont see the usefulness of your factory boost control post here as it doesn't really have any info regarding this car

[thewhitewrx]

I really dont see the usefulness of your factory boost control post here as it doesn't really have any info regarding this car

as demonstrated by the "usefullness of your last post i dont see how you have a leg to stand on


If you don't like being mocked than go somewhere else or god forbid serach before you post and just possibly learn the vocab so you dont look like a douche. as for WRX i have yet to see a useful post from you two step plan for respect on zilvia 1. search and learn 2. post educated questions

as for that last question just do it and learn

[240silvia]

Hey 240 silvia man give me a break alright. I dont understand why it is that someone always has to jump in and try to make someone look stupid. I dont see you giving me any valuable info so whats your point in posting in this discussion anyways. I dont know much about the car yet and if i would have been the one to do the swap i could tell you where everything was but i didnt do the swap so thats why i ask for help.

Sorry bro, I was just giving you a hard time. Plus, bad day at work that day.... so...... ya know. Sorry man, stay around here long enough and you'll learn the in's and out's of your Boosted 40.