boost controller help

Nissan 300ZX technical discussion forum: Maintenance, performance, installations, modifications, how-to's and troubleshooting.
Elminsster
Posts: 30
Joined: Thu Jul 18, 2013 3:42 pm
Car: 1990 300zx TT 5 speed

Post

I installed my ebc following this diagram
http://z32.wikispaces.com/file/view/TT_ ... roller.png
For some reason my car won't raise past 9psi no matter what. Any ideas?


itsa300zx
Posts: 1287
Joined: Sun May 31, 2009 9:39 am
Car: 1990 300zx NA W/TT swap
2011 Nissan Rogue S
2008 Highlander SR5
Location: up North

Post

Did you remember to disable the stock boost solenoids?

Elminsster
Posts: 30
Joined: Thu Jul 18, 2013 3:42 pm
Car: 1990 300zx TT 5 speed

Post

Yes, they're 100% removed

ThisIsSparTTa
Posts: 738
Joined: Wed Sep 26, 2012 6:02 pm
Car: 91 300ZX TT 2+0

Post

Did you check those bleed-off ports that Spencer@Z1 recommended over on the other forum? I know I missed at least the one on my passenger side. To get to it, you'll need to take off the intake 2 pipes that run to the turbo.

Also, have you done a boost leak test yet?

Elminsster
Posts: 30
Joined: Thu Jul 18, 2013 3:42 pm
Car: 1990 300zx TT 5 speed

Post

No I haven't checked them. Could that stop it from increasing boost?

ThisIsSparTTa
Posts: 738
Joined: Wed Sep 26, 2012 6:02 pm
Car: 91 300ZX TT 2+0

Post

That would be a decent sized boost leak (when I saw mine)...so yes. That was advice from Z1, one of the more respected shops around. You should look into it.

Elminsster
Posts: 30
Joined: Thu Jul 18, 2013 3:42 pm
Car: 1990 300zx TT 5 speed

Post

Alright. Thanks a lot

Elminsster
Posts: 30
Joined: Thu Jul 18, 2013 3:42 pm
Car: 1990 300zx TT 5 speed

Post

So I made sure all the bleed off ports were capped. It still is only hitting 9psi :(

nissanfreak12
Posts: 1709
Joined: Sun Jan 23, 2011 4:07 pm
Car: 92 300zx 2+2 TT
Location: Denver, CO

Post

What EBC are you using and are you relying on the stock gauge? Do you also have a tune to account for the higher boost?

Elminsster
Posts: 30
Joined: Thu Jul 18, 2013 3:42 pm
Car: 1990 300zx TT 5 speed

Post

Greddy profec b spec 2. No, aftermarket gauge, and yes I have a tune

nissanfreak12
Posts: 1709
Joined: Sun Jan 23, 2011 4:07 pm
Car: 92 300zx 2+2 TT
Location: Denver, CO

Post

That particular EBC can be a pain to set correctly. Had a friend that had one and no matter what he did with the instructions, still couldn't get it to boost right. Granted, I think he had a few screws loose in his head, but maybe you can post what settings you have and another member may be able to see what might be wrong.


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