Description
ST9 MAX BOOST ECU Performance Chip Turbo Lag Remover With Latest Programming
The fastest & safest way to obtain a highly power tuned ECU. Safely unlock your vehicle’s potential.
FOR OFF-ROAD COMPETITION USE ONLY
FITMENT:
2011+ Mini Cooper 1.6L N18 Turbocharged Engines

About the Module
Get Maximum Performance From your Engine- Safely!
The MAX BOOST module easily connects to your Mini Cooper boost sensor within seconds, providing the ultimate in power gains, increasing your throttle response, high end torque and acceleration. Proven to provide better street performance, towing capabilities and response. The ST9 MAX BOOST module will work with all aftermarket performance products, such as Intakes, exhaust systems, mass air flow sensors, throttle body spacers, etc. The module can be removed within seconds from your turbocharged engine and once removed it leaves no trace – it cannot void any factory warranty. It is plug and play and delivers instant horsepower and torque gains. The ST9 MAX BOOST module works by monitoring your turbo boost sensor signal. It does not make any adjustments until higher RPMs or WOT (Wide Open Throttle) are reached. It then increases the boost pressure slightly (within safe ECU limits) to provide a safe yet effective boost in torque. It barely affects fuel economy when activated and automatically deactivates itself at low RPMs, so normal driving will not affect fuel economy whatsoever. It only activates the added boost when you need it, so you have more power and response from your Mini at just the right time.
· Engine output improved by up to +38 WHEEL FT-LB
· STAGE 3 – Compatible with both STOCK and MODDED vehicles
· Enhances throttle response, acceleration and high end torque
· Peaks acceleration by up to 40%
· Will not void warranty – completely safe for your engine
· Plug and play – connects to boost sensor under the hood
· Safely increases boost when you need extra power
· Compare to JMS BoostMAX (Over $300)
Scam Chips Are Everywhere
This is Not a cheap, scam resistor like many others. NO RESISTORS or cheap hacks like the competition. This is literally what is inside over 90% of ‘performance modules’ sold online – a .10 cent resistor!
The ST9 MAX BOOST module contains a vehicle specific, custom programmed microprocessor. It communicates directly with the ECU through the factory boost pressure connector, so there’s no danger of damaging your vehicle! No resistor can do this!
FAQs:
Will it only work with Modded Vehicles?
The module is Stage 3, yet is is compatible with stock as well as modded vehicles. The microprocessor will detect engine characteristics via the factory boost port and adjust itself accordingly.
What is Stage 3?
The vehicle performance industry recognizes three tuning stages: Stage 1, Stage 2 and Stage 3. Stage 1 is generally for stock vehicles and provides the smallest gains in performance and power. Stage 2 is generally for slightly modded vehicles and provides mid-range performance and power gains. Stage 3 is generally for highly modified vehicles and provides the most aggressive tuning performance and power. This module is Stage 3, yet it requires no mods to be installed before installation. It can also be used with modded vehicles as well. It operates within the safe ECU limits set forth by the vehicle manufacturer and this ensures it cannot cause vehicle damage.
What is turbo lag and what does turbo lag feel like?
Turbo lag is the period of time between pressing the gas pedal and feeling the power or ‘pull’ from a turbocharged engine. It is a delay which frustrates many turbocharged vehicle owners- but no more. The ST9PRO removes this lag by monitoring the boost level and boosting it safely on demand, more quickly than stock, resulting in smooth acceleration and turbo lag removal. The ST9PRO Max Boost tuner is the most cost effective, powerful and easiest to install turbo lag solution on the market.
What if my vehicle is Supercharged or Turbocharged?
This module is only compatible with 2011 and newer Mini Cooper 1.6L N18 Turbocharged Engines.
What if I already have a Power Programmer or Handheld Tuner installed?
No problem. This module will work with all aftermarket power programmers, tuners and OBD2 modules. However, you must have access to the boost sensor. The product must be connected to the boost sensor harness at all times in order to function.
What if I have an Automatic or Manual? Does it matter?
The module is compatible with both Automatic and Manual transmissions.
Will this void my warranty?
No! This module does not cause any damage, unlike most cheap competitors. This product will not void your warranty. The vehicle manufacturer cannot void your vehicle warranty due to aftermarket accessories. The module uses soft-patching technology and is completely safe and reversible. It leaves no footprint and cannot be detected once removed from the vehicle. It is plug and play.
Can this Damage my engine?
Since the ST9 MAX BOOST module only interfaces with the vehicle computer (ECU) via the boost sensor, it causes your vehicle’s computer to adjust itself to a more optimal fuel mixture and timing curve. This means you are fully protected by the built in safeguards of your computer. These performance chips have been tested over and over and are proven not to affect your vehicle’s engine or electrical system in any way, unlike cheap resistor scam chips.
Will this chip work on my vehicle?
This is a custom programmed chip for specific engine models. It is only compatible with the following vehicles and engines:
2011+ Mini Cooper 1.6L N18 Turbocharged Engines
Is this a resistor scam?
No. It connects to your boost sensor under the hood. It interfaces with your ECU, it is not a damaging resistor scam chip.
How much gain can I expect?
Gains vary depending on many variables, but max gains will be around +38 WHEEL FT-LB. Boost values will increase only when the vehicle boost reaches 10PSI or more.
What information is needed to program the chip for my vehicle?
We will need the Make, model and year of your vehicle. (Please send this information at the time of checkout). Please ensure your vehicle is listed in the fitment list before ordering.

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