boost controll

poizen · Post by **poizen** » Mon Aug 03, 2009 2:44 pm

hey guys i bought a boost control from speed shop with the t piece that go between your turbo and actuator but with the bleed vaulve full closed im still getting 1bar boost wow feels great but i made one injector leak so i took it out and back to 0.6bar and injector not leaking but why does it go to 1bar mayb even more
surly it shoulndt do that

Gary57 · Post by **Gary57** » Mon Aug 03, 2009 2:47 pm

Is that shitty T piece on the correct way??

poizen · Post by **poizen** » Mon Aug 03, 2009 2:56 pm

Gary57 wrote:Is that shitty T piece on the correct way??

yes it is i think it is that the t piece has a small hole in it where the ball sits to seal vacum

but it takes over 1 bar to activate actuator
but the ca could handle 1bar was no splutter but i gone back to standard till i sort out it not going over 1 bar

RBSX · Post by **RBSX** » Mon Aug 03, 2009 4:57 pm

please check this link, im also having problems with mine
also jumps to 1 bar, have to tap off to not go more

heres the install diagram.

i think those stickers on the t peice may be wrong side

http://www.nissanforums.com/z31-300zx-t ... ontrol.htm

poizen · Post by **poizen** » Mon Aug 03, 2009 6:04 pm

thanks donny i found that diagram the person i got the boost controll said it boosts to 1.5bar then returns to lets say 0.6 std

the prob is that the lil ball inside doesnt release itself at 5.5bar but at 0.1bar the reason why you getting 1.5bar is the design flaw i saw in it there is a lil hole where the ball sits so that the turbo cant suck a vacume from the vented line and the hole is like a 3mm id hole so you getting such restriction on the flow to the acutator

what i did it toss the t piece awy and join the main control barb to turbo and other to wastegate and instead of turnning to the direction of the - to lower boost it now increases boost so the controll is in reverse i hope this makes sense

poizen · Post by **poizen** » Tue Aug 04, 2009 10:07 am

why was my car running 1bar boost no problem didnt have sltutter or anything just pulled and puled didnt even over heat why didnt the boost cut come into play

Q-mech · Post by **Q-mech** » Tue Aug 04, 2009 10:21 am

What management are you running? I might have a kick ass solution for you, and it'll bring down the lag as well!

poizen · Post by **poizen** » Tue Aug 04, 2009 10:24 am

Q-mech wrote:What management are you running? I might have a kick ass solution for you, and it'll bring down the lag as well!

im runnin 100% stock managment

poizen · Post by **poizen** » Tue Aug 04, 2009 10:56 am

Q-mech wrote:What management are you running? I might have a kick ass solution for you, and it'll bring down the lag as well!

how will you bring down the lag

Q-mech · Post by **Q-mech** » Tue Aug 04, 2009 10:57 am

That's a pity, the system i'm referring to relies on the GPO function on an after market management.

poizen · Post by **poizen** » Tue Aug 04, 2009 10:58 am

yea im std not for long tho but it makes me wonder how can my car run 1bar and run well

Q-mech · Post by **Q-mech** » Tue Aug 04, 2009 11:14 am

It's funny, but mine did the same, it only cuts out at 1.1 barr... i just figured it was the previous owner that mucked around! check if your EPROM is slotted, that will tell you.

poizen · Post by **poizen** » Tue Aug 04, 2009 11:51 am

Q-mech wrote:It's funny, but mine did the same, it only cuts out at 1.1 barr... i just figured it was the previous owner that mucked around! check if your EPROM is slotted, that will tell you.

what you mean slotted ive opend it but it looks std

Trance101 · Post by **Trance101** » Tue Aug 04, 2009 1:23 pm

It not all about boost pressure hey. Flow counts more for making power. Like my 13G maxed out the stock injectors at about 0.7bar.

poizen · Post by **poizen** » Tue Aug 04, 2009 2:30 pm

well im running the t25g i used to get boost cut at 0.7 but now i went to 1bar only getting boost cut at 1.1 bar good thing i stoped and saw the injector leaking so i turned it back to 0.65-0.7bar and it amazing it sticking there not soiking at 0.7 and coasting to 0.5 it sex on wheels really