Product Overview
The Nitrous Express Maximizer 6 Progressive Nitrous Controller lets you choose how much nitrous you leave on, how quickly it comes in, and when it shuts off. If the tires spin early in a pass, you can soften that part of the curve and still bring in full power downtrack. If you're running a turbo, you can use nitrous to help it spool, then taper the nitrous off as boost builds.
The Maximizer 6 controls up to four stages of nitrous by time, engine RPM, vehicle speed, throttle position, or boost pressure. It supports naturally aspirated and boosted combinations, gasoline or diesel. Programmable cutoffs let you set operating limits for your engine, and built-in data logging lets you review each pass before changing the tune.
Five ways to control nitrous delivery
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Time-based progression: Set your starting ramp percentage and shape the curve from the moment nitrous activates. For drag racing, this lets you fine-tune the launch and bring power in as the car gets down the track.
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RPM-based progression: Bring in a smaller percentage of nitrous at lower RPM and increase delivery as engine speed climbs. This works well with a tight converter when the car can use more nitrous near the top of first gear.
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Vehicle speed (MPH): Match nitrous delivery to how fast the car is moving, whether you leave from a stop or start from a roll. Bracket racers can also set an MPH cutoff.
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Throttle position (TPS): Nitrous delivery follows your right foot. If you pedal the car, flow decreases as you lift and comes back progressively as you roll into the throttle. This is especially useful for road racing and drifting.
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Boost-based progression: On a turbocharged gas engine, bring nitrous in early to help spool the turbo, then reduce delivery as boost comes up. On a turbo diesel, you can hold back full nitrous delivery until the engine reaches your selected boost level.
RPM window switch and programmable cutoffs
Set the minimum engine RPM for nitrous activation and an upper RPM cutoff with the built-in RPM window switch. With the appropriate sensors connected, the Max 6 can also monitor throttle position, nitrous bottle pressure, and boost or crankcase vacuum. Three additional 0–5V sensor inputs let you monitor other conditions on your combination. If a monitored value moves outside the limits you set, the controller can reduce or shut off nitrous delivery.
Closed-loop air-fuel ratio control
Connect a compatible aftermarket wideband Oâ‚‚ module and enter your target air-fuel ratio (AFR). As bottle pressure drops during a run, the Maximizer 6 can trim fuel or nitrous solenoid output to bring AFR back toward your target. Separate rich and lean cutoffs let you shut off nitrous if AFR moves outside your chosen range.
Stage capacity and driver ratings
The two built-in solenoid drivers support up to 60 amps each when configured as separate outputs for stages one and two. For a single stage without AFR correction, the outputs can be combined for up to 120 amps.
In closed-loop AFR mode, both drivers control one stage, allowing the Max 6 to adjust the fuel and nitrous solenoids independently. Stages three and four require external solenoid drivers, sold separately.
Running a dry nitrous system? The Max 6 can send its solenoid output percentage to a compatible aftermarket ECU, allowing the ECU to add fuel as nitrous delivery increases.
Tune the curve and review each pass
Use the Windows software to build a custom nitrous curve by dragging individual points between 0 and 100% solenoid output. You can change one section of the curve at a time, save the tune, and compare the next pass. For adjustments between rounds, the optional 4-inch Maximizer 6 touchscreen display lets you monitor inputs, adjust common settings, and store up to three tunes without opening your laptop.
The built-in data logger automatically records all connected inputs and stores over 100 quarter-mile runs before you need to transfer them to a laptop. Pull up a pass to see where RPM climbed, where you lifted, and how bottle pressure changed from launch to finish.
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