Cant hit over 10 psi of boost (newbie) - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

Drift_s13_240sx · 03-08-2005, 03:03 PM

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 · 03-08-2005, 03:15 PM

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 · 03-08-2005, 03:25 PM

sounds like the actuator to me

Drift_s13_240sx · 03-08-2005, 03:58 PM

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 · 03-08-2005, 04:12 PM

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 · 03-08-2005, 04:13 PM

Manual Boost Controler

no you would have to replace the actuator

tegasaurus · 03-08-2005, 05:47 PM

i have the same problem with my SR. homemade MBC from ace hardware

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 · 03-08-2005, 06:08 PM

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

(i really hope you dont follow my advice)

Campos · 03-08-2005, 06:50 PM

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 · 03-08-2005, 08:04 PM

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 · 03-08-2005, 10:16 PM

Quote:

Originally Posted by 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.

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

thewhitewrx · 03-10-2005, 09:12 AM

Quote:

Originally Posted by 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!

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 · 03-10-2005, 11:00 AM

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

WILDACEX187 · 03-10-2005, 01:29 PM

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

the head · 03-10-2005, 02:08 PM

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 · 03-10-2005, 02:13 PM

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

s14 blacktop · 03-10-2005, 02:46 PM

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 · 03-10-2005, 08:14 PM

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 · 03-10-2005, 09:04 PM

ummm yea she says that every morning.

thewhitewrx · 03-11-2005, 01:16 AM

Quote:

Originally Posted by 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

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 · 03-11-2005, 07:38 AM

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 · 03-11-2005, 08:35 AM

Quote:

Originally Posted by 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

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

Quote:

Originally Posted by 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

240silvia · 03-24-2005, 05:42 PM

Quote:

Originally Posted by 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.

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.

03-08-2005, 03:03 PM	#1
Drift_s13_240sx Join Date: Mar 2005 Location: Alabama Age: 38 Posts: 3 Trader Rating: (0) Feedback Score: 0 reviews	Cant hit over 10 psi of boost (newbie) 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

03-08-2005, 03:15 PM	#2
the head Nissanaholic! Join Date: Jul 2002 Location: in a dark room mastering the art of typing with one hand Posts: 2,164 Trader Rating: (3) Feedback Score: 3 reviews	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 __________________ I never knew you could do that with an eggplant

03-08-2005, 03:25 PM	#3
WILDACEX187 Post Whore! Join Date: Jan 2003 Location: QUEENZ, NYC Age: 42 Posts: 3,103 Trader Rating: (4) Feedback Score: 4 reviews	sounds like the actuator to me __________________ SR POWA COUPE LUVVV!!!

03-08-2005, 04:13 PM	#6
the head Nissanaholic! Join Date: Jul 2002 Location: in a dark room mastering the art of typing with one hand Posts: 2,164 Trader Rating: (3) Feedback Score: 3 reviews	Manual Boost Controler no you would have to replace the actuator __________________ I never knew you could do that with an eggplant

03-08-2005, 06:50 PM	#9
Campos Zilvia Addict Join Date: Jan 2005 Location: southeast tx Age: 41 Posts: 659 Trader Rating: (2) Feedback Score: 2 reviews	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!! __________________ Parting out SR build....

03-08-2005, 03:58 PM	#4
Drift_s13_240sx Join Date: Mar 2005 Location: Alabama Age: 38 Posts: 3 Trader Rating: (0) Feedback Score: 0 reviews	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>

03-08-2005, 04:12 PM	#5
240silvia Nissanaholic! Join Date: Jul 2002 Location: Wilmington NC Age: 40 Posts: 2,060 Trader Rating: (3) Feedback Score: 3 reviews	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!

03-08-2005, 05:47 PM	#7
tegasaurus Leaky Injector Join Date: Nov 2003 Location: scottsdale, az Posts: 116 Trader Rating: (0) Feedback Score: 0 reviews	i have the same problem with my SR. homemade MBC from ace hardware 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.

03-08-2005, 06:08 PM	#8
97SilviaRB Leaky Injector Join Date: Nov 2003 Location: North Carolina Posts: 144 Trader Rating: (0) Feedback Score: 0 reviews	Pull the line to your wastegate and see if it will go over 10 psi (i really hope you dont follow my advice)

03-08-2005, 08:04 PM	#10
Drift_s13_240sx Join Date: Mar 2005 Location: Alabama Age: 38 Posts: 3 Trader Rating: (0) Feedback Score: 0 reviews	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.

03-10-2005, 11:00 AM	#13
420sx Post Whore! Join Date: Jun 2004 Location: Texas Age: 42 Posts: 3,960 Trader Rating: (0) Rides Gallery: 420sx Feedback Score: 0 reviews	you need to get HKS wastegate acuator, u can adjust it to run 11 psi constantly (make sure u have supportin mods tho !) __________________ hydropgrahics! ls1......

03-10-2005, 01:29 PM	#14
WILDACEX187 Post Whore! Join Date: Jan 2003 Location: QUEENZ, NYC Age: 42 Posts: 3,103 Trader Rating: (4) Feedback Score: 4 reviews	cant u run 11 psi on a side mount and 370 injectors? __________________ SR POWA COUPE LUVVV!!!

03-10-2005, 02:08 PM	#15
the head Nissanaholic! Join Date: Jul 2002 Location: in a dark room mastering the art of typing with one hand Posts: 2,164 Trader Rating: (3) Feedback Score: 3 reviews	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 __________________ I never knew you could do that with an eggplant

03-10-2005, 02:13 PM	#16
WILDACEX187 Post Whore! Join Date: Jan 2003 Location: QUEENZ, NYC Age: 42 Posts: 3,103 Trader Rating: (4) Feedback Score: 4 reviews	well im asking because i know somebody pushing 12 on a sidemount. he has full exhaust though. __________________ SR POWA COUPE LUVVV!!!

03-10-2005, 02:46 PM	#17
s14 blacktop Zilvia Member Join Date: Oct 2004 Location: down south, deep south Age: 44 Posts: 274 Trader Rating: (0) Rides Gallery: s14 blacktop Feedback Score: 0 reviews	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.. __________________ I'm here to inform not to conform...

03-10-2005, 08:14 PM	#18
katbak Leaky Injector Join Date: Jan 2005 Location: Ok Age: 45 Posts: 106 Trader Rating: (0) Feedback Score: 0 reviews	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...

03-10-2005, 09:04 PM	#19
420sx Post Whore! Join Date: Jun 2004 Location: Texas Age: 42 Posts: 3,960 Trader Rating: (0) Rides Gallery: 420sx Feedback Score: 0 reviews	ummm yea she says that every morning. __________________ hydropgrahics! ls1......

03-11-2005, 07:38 AM	#21
the head Nissanaholic! Join Date: Jul 2002 Location: in a dark room mastering the art of typing with one hand Posts: 2,164 Trader Rating: (3) Feedback Score: 3 reviews	I really dont see the usefulness of your factory boost control post here as it doesn't really have any info regarding this car __________________ I never knew you could do that with an eggplant