TwinTurbo.NET: Nissan 300ZX forum - Random loss of Horsepower need help
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Subject Random loss of Horsepower need help
     
Posted by DerekG on May 08, 2012 at 10:57 PM
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Message So i have a 1991 300zx TT very modded out.

Greddy Profec B SPEC2 Boost Controller = $399.00
[ http://www.z1motorsports.com/product_info.php?cPath=6_320&products_id=36 ]
HKS Turbo Timer Type-1 RPM LCD Display Beep = $239.00
[ http://www.ebay.com/itm/New-Genuine-HKS-Turbo-Timer-Type-1-RPM-LCD-Display-Beep-/120751473179 ]
Snow Performance Stage 2 Water Injection Kit = $398.00
[ http://www.z1motorsports.com/product_info.php?cPath=6_24&products_id=2230 ]
Z1 TT Clutch & Flywheel Combo = $734.00
[ http://www.z1motorsports.com/product_info.php?cPath=6_385&products_id=1837 ]
JWT ECU Upgrade (Twin Turbo) 90-94 = $575.00
[ http://www.z1motorsports.com/product_info.php?cPath=6_21&products_id=884 ]
JECS 555cc with adapter kit Fuel Injectors = $726.00
[ http://www.z1motorsports.com/product_info.php?cPath=6_17&products_id=4293 ]
STILLEN CatBack Exhaust System = $1135.98
[ http://thmotorsports.com/i-289211.aspx?utm_source=GoogleShopping&utm_medium=CSE&utm_content=289211NOFITMENT&utm_campaign=GoogleShoppingSeanNOFITMENT ]
Z1 3" Stainless Steel Twin Turbo Testpipes / H pipes = $406.00
[ http://www.z1motorsports.com/product_info.php?cPath=6_19&products_id=5344 ]
BDE Performance Z32 Motor Mounts = $390.00
[ http://www.z1motorsports.com/product_info.php?cPath=6_14&products_id=4017 ]
EGR Elimination Kit = $38.00
[ http://www.z1motorsports.com/product_info.php?cPath=6_14&products_id=1875 ]
Nissan Timing Kit with Nismo T stat Both Pulleys and Plugs = $630.00
[ http://www.z1motorsports.com/product_info.php?products_id=1680 ]
Z1 Silicone PCV Hose Kit - Twin Turbo = $64.00
[ http://www.z1motorsports.com/product_info.php?cPath=6_541&products_id=3726 ]
Z1 Silicone Heater Core Hoses =$25.50
[ http://www.z1motorsports.com/product_info.php?cPath=6_541&products_id=3097 ]
Reinforced Silicone Coolant Hose 8mm 6 feet (5/16") ID = $52.00
[ http://www.z1motorsports.com/product_info.php?cPath=6_541&products_id=3414 ]

JWT Pop Charger Intake = $100.00
[ http://www.z1motorsports.com/product_info.php?cPath=6_18&products_id=59 ]
Z1 Stainless Steel Intake Hardpipe Kit (TT) = $225.00
[ http://www.z1motorsports.com/product_info.php?cPath=6_18&products_id=3038 ]
Z1 2.5" "5 bolt" Stainless Steel Downpipes = $298.00
[ http://www.z1motorsports.com/product_info.php?cPath=6_7&products_id=75 ]
GT600R Turbo Kit = $2395.00
[ http://www.z1motorsports.com/product_info.php?cPath=6_16&products_id=1451 ]
'99 JDM Tail lights = $500.00
[ http://www.z1motorsports.com/product_info.php?cPath=6_13&products_id=7 ]
Smoked Turn Signal Lenses (Corner Lights) = $108.00
[ http://www.z1motorsports.com/product_info.php?cPath=6_13&products_id=34 ]
'99 JSPEC front fascia (JDM) = $493.00
[ http://www.z1motorsports.com/product_info.php?cPath=6_12&products_id=1537 ]
300ZX TT FRONT MOUNT INTERCOOLER KIT =$500.00
[ http://www.nissanraceshop.com/product/331017/godspeed-nissan-300zx-front-mount-intercooler-ick016 ]


thats all the mods done to it. When i finished the car it was a beast . just insane at 18 psi. and then all of the sudden i started getting intermitant power sometimes it would be so fast and sometimes it would feel like a stock Z I have data logged on my Blazt consult I dont really know what im looking at when it comes to tuning or things like that. I need some help . If anyone out there can help me brain storm this issue i would be so greatful.

Also i did a boost like test and the BOVs were leaking so i replaced them i haved boost leak test them since i got them in todayi had a few other boost leaks but fixed them. also at idle consult says it runs lean and under boost it runs rich i had it on the dyno and the air fuel was pegged at 10 the whole time once boost was reached

     
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