Compared across 3 stores. Prices are checked against each store and labelled with when.
It checks today's price at every store, compares the alternatives and answers in about a minute.
The PowerMAX is an OBD2 plug-in module that claims to remap engine timing on the BMW 745i for more horsepower, sharper throttle response and 4-6 mpg better fuel economy. It installs in about a minute through the diagnostic port and unplugs just as fast, so it can come out before emissions testing or dealer diagnostics. It suits owners who want a cheap, reversible tweak rather than a real ECU tune. Treat the power and mpg claims with caution: a plug-in box on the OBD2 port cannot rewrite fuel and ignition maps the way a flashed tune can, and independent testing of similar chips has rarely reproduced the advertised gains.
In stockReturn policy
In stockReturn policy
In stockReturn policy
The PowerMAX Performance Chip is an engine tuning module made for the BMW 745i. It is designed to adjust the engine's timing and performance to increase horsepower and torque, improve throttle response, and raise fuel economy by 4-6 miles per gallon.
It installs by plugging into the OBD2 port. Installation takes about 60 seconds and needs no complex wiring or professional help. The chip works with all fuel grades, so premium gas is not required. It adjusts automatically to aftermarket upgrades such as air intakes or exhaust systems.
The chip can be unplugged to return the vehicle to its original factory settings. It does not interfere with emissions testing or diagnostic work, and it maintains the vehicle's warranty.
