Jump to content
SAU Community

Boost Spiking Abit After Fmic Installed?


Recommended Posts

Hey guys,

on sunday i installed my gk tech cooler and all went well after some hasltes fitting and we got the cooler on.

however, the intercooler piping does not have the niple on it that the stock piping had so i took the vacum hose which was plumbed onto the stock piping and T peiced it off on the vacum hose coming from the top of my plumback bov.

as of now when i give the car abit the boost can spike to as high as 0.9bar then instantly go back down to 0.5bar then rise again to about 0.7bar near redline.

would it have something to do with the length of the hose i used to plumb the stock boost solenoid into the bov vacum line?

Pretty soon im going to get a nippled welded onto the cooler pipes in the same spot that the stock one was but for now, is there somewhere else i should plumb that hose to?

if i havnt explained myself enough let me know.

cheers

Link to comment
Share on other sites

with that line disconnected you are running unlimited boost

you need to rectify this is your will experience failure immediately.

make sure the line is connected and take it from the same location, get a nipple fitted

Link to comment
Share on other sites

Nah mate i plumbed the line that was connected to the stock coole piping onto the vacum line which runs from the inlet manifold to the top of my plumback blow off valve so its still only boosting 0.5bar.

I will get a nipple welded onto the pipes as soon as i can though.

cheers

Link to comment
Share on other sites

Nipple welded on will solve all the problems.

By having it connected to the vacuum line that goes to the BOV is too far. The Actuator is very sensitive, thats why when installing boost controllers they recommend that the hoses are as close to the actuator as possible but far enough so there's no heat problems.

Link to comment
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
 Share



  • Similar Content

  • Latest Posts

    • Yeah most people that have heard it said it was fine but it's always had me slightly worried. Oil pressure I can't remember off the top of my head but it has plenty, I run 10w60 You're probably right mate, best get ordering some shims! Guessing Nissan is the best place for them?
    • Just wanna preface this and point out I'm a mechanical fitter by trade but have had very little rebuild/machining experience, but I am keen to learn, hence this project. Bit of a write up here so bear with me, just want to make sure I do this right  I've got an rb30e currently pulled down. Planning on putting a 25 head on it and running it in my s14.  Not chasing huge power so I'm just going to try get away with factory bottom end for now.  Started measuring the crank the other day, realised my budget daytona micrometer set wasn't up to the task (surprise, I know). They only measure to 0.01mm but the Nissan specs are to 0.001mm. Anyway, I started measuring anyway and came away with the mains being inline with the oem spec, as well as the big ends, except for no. 5. I consistently got a measurement of a hair over 49.96mm, where all the others were pretty spot on 49.97mm. The lower spec for grade no.1 is 49.961mm. I'm getting access to some better gear my next days off to double check everything, but in the case that the big end is right on that bottom spec, is it pretty much just a case of straight to the machine shop for machining and oversized bearings? I understand I need to measure the tunnel as well to work out my oil clearance, but it's the different grade bearings in the manual that are confusing me. What is generally the process when one journal would still technically be in spec, but in a different grade?  Thanks for coming to my Ted talk
    • You need to visit Ipswich. Plenty of clapped out R32 and R33s running around here as daily drivers. And when I say clapped out, they're how you'd look at a VN, when it's the year 2010...
    • So I checked this out in the weekend.. and look at this. I remember watching the videos. Finally got to see it in person! BRB. Tissues. Got tonnes of other pics and videos too.      IMG_0171.mov IMG_0113.mov
    • For anyone who might be put off by the slightly wacky wheel offset shown on the box photo above, the production models are not like that. Here's some more pics of the actual product (as well as the interior)
×
×
  • Create New...