Upper Management
With virtually every component of our engine replaced, removed, upgraded, or modified, we knew getting everything to work together wouldn't be easy. Our engine had grown in displacement, and had been added a vastly larger turbo, four additional fuel injectors, a completely re-designed intake manifold and throttle body, a 5-bar map sensor, and its MAFS had been removed. Needless to say: throttle position, fuel pressure, injector duty, manifold pressure, ignition timing-virtually all maps needed to run our engine-had to be constructed from scratch by master tuners, and an advanced engine management system was needed to handle it all. On top of that, a grip of advanced ignition components would be needed to produce a stronger, more predictable spark to light the mix we were trying to regulate. Sigh...
AEM
-CDI Pencil Coils
-Uego Wideband O2 sensor
-Stand-alone engine management system
The ability to control virtually every aspect of engine function, and work perfectly with complimentary AEM electronics, while providing an intuitive starting point for tuners to work with; AEM's EMS manages the world's most powerful SR20DET race engines and street cars alike; why would we use anything else?
Twin Fire Ignition
Higher cylinder pressures from increased air and fuel require a much more powerful spark to ignite. AEM's Twin Fire unit can fire multiple sparks per event, and offers the fastest-available capacitor recharge at high RPM, to help maintain consistent combustion from idle to redline.
Peak And Hold Injector Driver
We're using eight injectors that flow five times more fuel than the factory four. Something was needed to control this mess.
www.aempower.com
Shakedown
Heading into any competition unprepared is never a winning strategy, especially when building engines nearly from scratch. Though the final battle would be fought at Speed-O-Motive's engine dyno, it was up to the G-Dimension crew to get the SR tuned and ready prior to that, which meant temporarily installing it in one of their drift cars and hitting the chassis dyno. Hearing the ghost in the machine roar to life after months of hard work, days of final preparations, and a few moments of uncertainty, sent chills through the spines of all who witnessed it. After some tweaking from Leon and Stephen, and some fine-tuning from Koji-san, the tired S13 was literally sliding off the rollers, with the monster SR powering it in need of a more suitable mechanism for measuring its worth.
The Moment Of Truth
Castrol Syntec's Top Shop Challenge is over, and the results are in this issue's insert. Go to importtuner.com for an all-inclusive recap of the competition, including video of our shakedown chassis dyno runs, and some final tuning on Speed-O-Motive's engine dyno the official day of competition. We might even throw some video of the other guys in there, too... blowing up, stalling out and posting far inferior numbers to ours, of course!
By Luke Munnell
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