[Houston]: Building my VQ35DE for more boost...
Thread Starter
Joined: Oct 2005
Posts: 12,390
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From: Spring, TX
Thread Starter
Joined: Oct 2005
Posts: 12,390
Likes: 101
From: Spring, TX
Yeah... Don't know what up with the right/left bank AFR difference. I think the TPS is the reason for the bucking though. And as far and running out of pressure over 10psi... Still diagnosing.
Thread Starter
Joined: Oct 2005
Posts: 12,390
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From: Spring, TX
Received an update from PowerFab;
So hopefully some real number soon. Last known were; 463/419 @ 8psi on 93 pump.
Originally Posted by PowerFab
Looks like iv got the fuel pressure drop taken care of. Need to retune low load areas and get it back on the dyno at this point.
Thread Starter
Joined: Oct 2005
Posts: 12,390
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From: Spring, TX
Just got off the phone with PowerFab... Car is running strong other than fuel. Making 500ish on only 10 pounds of boost. Waiting on delivery of the twin pumps.
Thread Starter
Joined: Oct 2005
Posts: 12,390
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From: Spring, TX
Talked to PowerFab yesterday. Twin pump was going in this weekend and back onto the dyno Monday afternoon. Hopefully this will solve the pressure drop and we can make some real power! We'll see what this week brings.
Thread Starter
Joined: Oct 2005
Posts: 12,390
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From: Spring, TX
So hopefully the last of the fittings for the fuel pumps/basket arrive today. Also hoping it gets onto the dyno and we can start seeing some dyno numbers. Been a LONG journey and ready to come home to a finished Z!!!
Thread Starter
Joined: Oct 2005
Posts: 12,390
Likes: 101
From: Spring, TX
Car was back on the dyno for some fuel pressure checks and its holding fuel pressure. I haven't received how much boost as been run or any dyno results. I waiting for the return of my Cosworth intake manifold (Thursday) and hopefully I have priority to get finished tuning. Last known results were 480-500whp at 8-10psi on 93 pump. As always I'll get the thread updated.
Thread Starter
Joined: Oct 2005
Posts: 12,390
Likes: 101
From: Spring, TX
Latest email,
Spent most of the time building cylinder to cylinder compensation table reworking the trim tables with the manifold change. Fueling is tuned up to 13psi now with some timing added power will start to come up tomorrow.
What's with that cheapo rubber hose on that nice expensive fuel system?
Maybe it's the camera angle but it looks like 3/8" hose which is smaller than the needed 1/2" ID hard line the kit should come with.
Maybe it's the camera angle but it looks like 3/8" hose which is smaller than the needed 1/2" ID hard line the kit should come with.






