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BMW 125i - 5 Door Hatch

Availability: In stock


Quick Overview

2004 - 2007

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Here are the results from recent testing of 3 BMW E9x vehicles: 325i, 328i & 330i. All vehicles have no modifications to the engine and came in running CA91 premium pump gas. Each graph depicts the baseline (before tuning) vs. after ecu tuning runs. The engine configuration is the same in these vehicles with the exception of the 330i which has a different intake with variable geometry. Exhausts differ slightly also. From a tuning stand point these vehicles differ only slightly with the exception of key maps. Adjustments to the "valvetronic" tables make for safe and easy power gains from tuning. Each tune is a complete product with features like; top speed limiter removal, with improvement to throttle response and all round drivability. Each of these products is available for US$395.95 (from OE tuning dealers and ECU send in) or $595 with E-Z Flash (includes 4x map pack). More information on map switching and OBD2 flash loaders for BMW can be found here:

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Pictured above - 325i Baseline vs. ECU Tune

Pictured above - 328i Baseline vs. ECU Tune

Pictured above - 330i Baseline vs. ECU Tune

Additional Information

Model125i 5 Door Hatch
Year2008 - 2012
Stock Peak HP230
Tuned Peak HP255
Max HP Gain25
Stock Peak Torque200
Tuned Peak Torque221
Max TQ Gain21
Modification DescriptionOBD2 Flash
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