TwinTurbo.NET: Nissan 300ZX forum - won't boost more than 14psi.. (nor maintain it)
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Subject won't boost more than 14psi.. (nor maintain it)
     
Posted by b20rex on May 01, 2012 at 12:42 AM
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Message i don't post on here much cause i generally find what im looking for.. but here it goes
mods include:
555cc injectors
single pop charger
megan racing dp's
and an ebay mbc. i believe it's turbo logic. it worked fine before i pulled the plenum. (yes it's hooked up properly)

anywho i recently did a plenum pull/ egr delete and tested for boost leaks once it was all finished.. one of them happened to be on the driver's side tee that goes to the boost solenoid. i bypassed the solenoid and ran it directly to my boost controller (drivers side only) and then today when we went to put it on the dyno we couldn't get it to make more than 14psi. i'm not looking for much more than this but it's driving me crazy as to why it won't go higher.

we even capped off the line going to the wastegates and yet it still wouldn't boost more than this.

the turbo's don't smoke
car makes fine compression.
timing's dead on.


i'm thinking somehow the recircs aren't operating properly?
or perhaps it's the shitty stock smic's..
i've owned the car for 2 years and have never needed to take the front fascia off to even mess with either of these.

any help would be awesome.. O_O

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