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Forced Induction Turbochargers and Superchargers..Got Boost?

My FI friends, im at a loss of whats causing my issues. i turn to you.

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Old 10-09-2015, 09:17 PM
  #21  
Leonle
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i think your fuel pump grommet is damaged.

Last edited by Leonle; 10-09-2015 at 09:46 PM.
Old 10-10-2015, 07:27 AM
  #22  
Colombo
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Originally Posted by Leonle
i think your fuel pump grommet is damaged.
Someone else mentioned that too. I may pull the basket soon and check it all out.

Here is a video of the fuel pressure regulator when the motor is hesitating.

This is at WOT.

Old 10-10-2015, 08:07 AM
  #23  
Cux350z
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Problem #1: -car is tuned on uprev

Problem #2: -uprev GT maf has been cleaned (a few times)


Unless you know your way around uprev and have the cable...uprev is a joke for a DIY'er when it comes to getting tuned from a shop. You might as well have a locked HKs FCON. You're blind to everything your ECU is seeing.

Where is the alignment pin holes on the jwt? Should have 2. do they not go all the way through? (they did on my OS Giken and ATS Across dual clutches). If you are off on the pin..your timing is off.


As far as vac leaks...take your kit off and start inspecting the couplers and joints where used.

Mafs have failed. They are combo air meters and air intake take sensors. May try swapping in a different maf.
Old 10-10-2015, 11:06 AM
  #24  
meanz
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He found issue. Was a blown weld on on kinetix manifold.
Old 10-10-2015, 11:19 AM
  #25  
Conway_160
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Awesome!
Old 10-10-2015, 11:24 AM
  #26  
Cux350z
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Originally Posted by meanz
He found issue. Was a blown weld on on kinetix manifold.
But but but...kintex SSV is the manifold that god would run if he had a VQ35de.


makes sense, kinetix is known to blow welds under boost and since you were at the drag strip. Your initial instincts proved right...vac leak.

Get a MAP sensor and tune that way and your car would have been GTG.

Did you say it was pegging lean on the WB? Thats odd..normally a vac leak post maf makes you get rich and idle rough.
Old 10-10-2015, 02:20 PM
  #27  
Colombo
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Originally Posted by meanz
He found issue. Was a blown weld on on kinetix manifold.
Yep like josh said



Underside of the manifold. Having it welded up and braced. If I ever have the car retuned it will go to haltech. But for the last 2 years boosted and road racing uprev has done me just fine 👌🏽.
Old 10-10-2015, 02:21 PM
  #28  
Colombo
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Ps there is no issue cleaning a uprev gt maf have done it many many times in the past w zero issues.
Old 10-10-2015, 02:22 PM
  #29  
Colombo
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Originally Posted by Cux350z
But but but...kintex SSV is the manifold that god would run if he had a VQ35de.


makes sense, kinetix is known to blow welds under boost and since you were at the drag strip. Your initial instincts proved right...vac leak.

Get a MAP sensor and tune that way and your car would have been GTG.

Did you say it was pegging lean on the WB? Thats odd..normally a vac leak post maf makes you get rich and idle rough.
Under WOT. Would go full rich. Idling on cold starts it would lean out and die.
Old 10-10-2015, 02:31 PM
  #30  
OldManZ350
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Ye-haaaaa.........
Old 07-30-2018, 11:14 AM
  #31  
Murray011679
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Default Silver 350z

Who was the last to own this 350z and who pulled the motor out I now own what's left of this car and trying to figure out what motor is now in it
Old 08-02-2018, 02:57 PM
  #32  
terrasmak
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Originally Posted by Murray011679
Who was the last to own this 350z and who pulled the motor out I now own what's left of this car and trying to figure out what motor is now in it
john still owns it and was doing 1/2 mile events last weekend with it
Old 08-15-2018, 06:05 PM
  #33  
mx22o
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does he still sell this kit?
Old 07-24-2019, 04:00 PM
  #34  
chatcher
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wrong thread delete

Last edited by chatcher; 07-24-2019 at 04:04 PM.
Old 09-25-2019, 10:38 AM
  #35  
Vert
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Here to solve the problem guys!

Old 11-09-2020, 10:27 AM
  #36  
JasonZ-YA
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I did the active test and found my relay kicking on and then tested 12 volts coming to each plug to each fan however my fans were not working...i even swapped the top and middle relay as they are the same....i did this to make sure and yep relay was fine...

I replaced my fans using these steps but at step 11 (jacking up the car) - i jacked up the left side (passenger side) of the car ONLY and left the car tilted like that......this allowed me to disconnect the upper radiator hose from the radiator with zero spillage due to the angle an pitch...

the entire replacement took me under 30 minutes. was a quick fun job.

thanks for your DIY.
-J
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Quick Reply: My FI friends, im at a loss of whats causing my issues. i turn to you.



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