Rob’s 300ZX TT

As the availability of ethanol has increased in SoCal (depending where in SoCal you live).  Rob’s itched to get the fuel in his Z along with other upgrades performed.  This Z32 is using JWT GTX63 Turbos, JWT 500 Cams, MSP Exhaust Manifolds, SZ 3″ Down Pipes, SZ 3″ to 2.5″ T-Pipes, and SZ 2.5″ Catback.  For fueling we turned to the BDE Top Feed Fuel Rail Kit with Bosch 1150cc fuel injectors.  Currently the Z is running a single Walbro 485 fuel pump which limited us as to how much power we could run.  Later on down the road we will add a second fuel pump to get the most out of the engine\turbo hardware.    To harmoniously control the engine and all the fueling we turn to the Haltech Platinum Pro-Plug In ECU and supporting sensors.  This allows the Z to be a full “flex fuel” vehicle.  Rob can pump in any different combination of 91 octane gasoline and ethanol fuel and not worry about having to switch tunes.  No guessing or worrying!


To simplify plumbing we fabricated our own metal hard line for the BDE rails.  Always after a clean and detail oriented engine bay.


Rob can monitor ethanol content with the use of this Dynosty gauge.  Here it shows a content of 46 if you couldn’t tell.


With a fresh engine in place we were able to make great power on terrible CA 91 Octane gasoline.


On an ethanol content of 78% and at this power level our single Walbro fuel pump was dropping fuel pressure.  Adding a 2nd fuel pump will get us around 750-800 whp.


For the time being we’ll leave the power level here (613 whp) on about 20 psi of boost.  This gives the pump some comfortable working room.  Thank you to Rob, BDE, JWT, and Haltech!

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Comments (7)

  1. Mahesh

    Awesome!!! Wish we got E85 here. I guess pump 94 will have to do for now.

  2. Rob

    Thanks Seb! You guys are the best! I’m so lucky to have Specialty Z here in So-Cal. The Z is a beast!

  3. Will

    More specs on the Bosch 1150cc injectors?

  4. These injectors flow 110 lbs/hr at 58.0 PSI ( 4 BAR ) and more at higher PSI. In addition, these units are high-impedance. Despite the high flow rate, they are linear and controllable at low pulse widths and have been used in ULEV applications.

  5. Benjamin

    Is port matching msp manifolds beneficial or not worth the effort? Nice build, those gtx turbos have so much potential.

  6. Yes, since the head ports are a hair smaller it would benefit from it.
    Thank you!

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