Turbo 2JZ BRZ Drag Build Reaches the Track

Nov 13, 2026 Last reply: 6 hours ago 3 Replies
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The nastiest problem in this build had to be the ABS pump. Christofo found that the wrong unit made the power steering and speed sensors cut out after just thirty seconds of driving, so a manual transmission ABS pump went in instead of the stock automatic one, and the brakes were bled with a power bleeder bottle and clear hose hooked to the master cylinder. That kind of gremlin would stall a lot of people for months.



The car itself is a black Subaru BRZ carrying a turbocharged 2JZ-GE non-VVTI inline-six, backed by an A340E transmission with an FTI 4000 stall converter. A PSR S369 turbo sits on an eBay exhaust manifold, feeding a Deepmotor intake manifold, with ID1300X injectors and r35 coils up top, all run by a Haltech Elite 2500. A laptop tied into the ECU shows the tuning and telemetry software.



The fuel system shows real attention to detail. An Aeromotive 340 liter-per-hour pump turned out too tall for the factory hanger basket clip, so a DW300c went in as a direct-fit replacement, good for roughly 450 horsepower, handy since ethanol wants about thirty percent more volume. Access came through a panel under the rear seat floor, and the sender was cleaned of dirt before disassembly.



At the strip, the stock 4.11 differential gave way to a 3.73 to help boost build on launch. VMS Racing five-spoke wheels in 5x100 wear Mickey Thompson P275/50R15 drag radials, with longer ARP studs in the rear hubs and the caliper bracket ground for 15-inch clearance. Wheel weights clipped the modified caliper, so the wheel was rebalanced at a tire shop. The first clean pass went 12.0689 at 119.08 on 8 psi, and an Edgewater qualifier ran 11.9806 at 122.38, with a scramble button lifting boost to 16 psi in eliminations. One round was lost after lifting mid-run, and high-RPM misfire troubleshooting is still an open thread, with changes planned for next season.



Project by Christofo. Watch it on their YouTube channel:

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The 3.73 differential swap looks like the smartest single call in the whole build. Keeping the stock 4.11 might feel quicker on paper, but if the goal is spooling the turbo hard on the launch, the taller gearing giving the converter more time to build boost seems worth every bit of track et. Clever, quiet change.

Curious where the high-RPM misfire hunting ended up. With r35 coils and ID1300X injectors on a Haltech Elite 2500, was it pointing toward fuel volume on ethanol, or something in the tune? Would love to know if the DW300c solved it or if it is still being chased into next season.

Before the next season starts, I would go through the entire rear braking and hub assembly in one go. The rear pads were already worn when the wheels went on, and a broken stud turned up on the hub. Fresh pads and new ARP studs on both sides, maybe all four corners, would remove two known weak spots from a car that already grounds its caliper brackets for 15-inch wheels.

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