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AA Test Pipes + Stage II Upgrade for Existing Stage I Owners

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AA Test Pipes + Stage II Upgrade for Existing Stage I Owners

Availability: In stock


The main restriction in the E9x M3 exhaust is the primary cat. The AA test pipes are designed to replace the primary cat with perfectly mandrel bent, top quality pipe which retains OEM o2 sensor bung locations and bolt directly to OEM exhaust manifolds. The rear section of our pipes can either be clamped or welded on for a factory-like fit. This Package also includes the update from BPM Stage I to BPMStage II performance software to take full advantage of the new exhaust configuration.

**NOTE** - This package is only for EXISTING customers that currently have the Stage I Software. This is an UPGRADE including the Test pipes, clamps, installation manual, and Stage II software to suit this setup.

**WARNING** Please note that certain aftermarket exhaust systems may not comply with applicable US (including California) laws and regulations, and may therefore be prohibited for use on highways or roads, or on roads or vehicles otherwise subject to emissions control requirements. California prohibits the use of any aftermarket exhaust system that modifies, removes or replaces original equipment catalysts, unless CARB has issued an Executive Order as to such part or system.

Exhaust systems/components used or intended for use on “racing vehicles” (i.e. a competition vehicle used exclusively for competition on closed-course circuits) do not require an exemption or Executive Order from CARB to be sold in California. However, such parts are prohibited from use on California public highways or roads, even if occasionally used “off-road.” Because of this, this product is not available for purchase in California. Please contact us with any questions.

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Custom performance changes: Octane tuning

Changes to startup for additional safe guards and smoothness

Give your steering a sporty more refined feel

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Created with extensive research and testing of the ECU the upgrade transforms power and drivability. Developed with 100's of hours of dyno testing, datalogging and endurance testing we deliver more torque on a stock vehicle while retaining maximum safety margins.
Through careful remapping of the factory BMW DME tables, various elements such as ignition timing, fuel delivery, VANOS position and part throttles are reworked to create performance gains.

We also rework the torque calculations correctly to give consistent power. The latest version of our ECU flash has been thoroughly developed and gives an actual gain in performance rather than just a quoted figure. The result is a car that feels far sharper and pulls harder through the rev band.


• Easily program your vehicle with the performance software or flash back to stock - in less than 10 minutes!
• Read and clear fault codes and clear check engine lights with our easy to use software.
• Calibrated exclusively for this exhaust setup.
• Safe, reliable, tested extensively.

Please see what our customers have to say about our software and service here: Reviews & Customer Testimonials


How Will the Exhaust System Sound with this combo?

BPMStgII + ACM Test Pipes Exhaust Sound:



BPMStage II + DCT Software + ACM Test Pipes at the Drag Strip:


How does BPM Launch Assist work? (For Manual Vehicles Only!)

Additional Information

Brand BPMSport
Product Details No
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