Dyno Results A little tuner action: AA vs Stock vs Powerchip
Vital Statistics
  • Vehicle / Motor
  • Dyno Type
  • Dyno Correction
  • Notes
BMW E9x M3 (S65 Motor)
Dyno Dynamics
SAE (J1349)
HP and TQ adjusted -11% to reverse 11% AutoWave correction factor.
Dyno Database Dispute
Dispute Record:  100090 Dyno Database Entries Affected:
Date Received: 2009-08-28 23:24:39 Disputed By:  The Dyno Database
Dispute Text A claim was made that a vehicle containing an Active Autowerke ECU tune lost 18whp compared to stock.  Another claim was made that Powerchip "custom tune" software made approximately 40whp compared to Active Autowerke.  The car forum thread discussing this topic was filled with questions and accusations.  Most notable, there seemed to be inconsistencies with testing methods and questions about how accurately or "scientifically" they were conducted.  The vendor claimed he would immediately provide ample pictures and documentation to alleviate fears of dyno manipulation.  But in spite of numerous requests and many weeks later, no proof was ever offered.

Therefore the methods used in this dyno test must be considered suspect.  Vendor claimed to have done tests in scientific manner and would provide explanation. No explanation was ever proffered, and results are still in questions.

Date Received: 2014-06-27 14:35:00 Disputed By:  The Dyno Database
Dispute Text Five years in hindsight, we know 40whp gain from a tune is false.  Over the years, many such claims have been made, but none of them have held up to independent testing and evaluation.  For that reason alone, this Dyno Database entry should be considered invalid.
Configuration (from Baseline)
  • Rogue Engineering Underdrive Pulley
  • Macht Schnell Air Filter
  • RPI Air Scoops
  • 200 Cell High-Flow Catalytic Converter
  • Encore Innovation Cross-Pipe
  • Agency Power cat-back exhaust
  • 91 Octane (US), 95 Octane (RON)
  • The Dyno Database has raised questions or concerns about the accuracy of this entry.
Modification (since Baseline)
  • Power Chip Stage-2 ECU
Measured Results:
  • Torque
  • Horsepower
239 FT/LBS
350 HP
@ 4100 RPM
@ 8450 RPM
(324.0 NM)
(354.9 PS)
(33.04 KGM)
(261.0 KW)
Baseline Measurements:
  • Torque
  • Horsepower
239 FT/LBS
332 HP
@ 3900 RPM
@ 8300 RPM
(324.0 NM)
(336.6 PS)
(33.04 KGM)
(247.6 KW)
Performance Gains:
  • Torque
  • Horsepower
18 HP
( 0.0 NM)
(18.2 PS)
(0.00 KGM)
(13.4 KW)
Dyno Graphs: