Finally deciding to tune my BMW after waiting since 2022 and hitting 47,000 miles, I opted for a dealer-installed Carbahn ECU tune in Chicago. The wait for an OBD tune seemed uncertain, and I wanted a reliable solution without the hassle of ECU removal and shipping. Choosing a reputable BMW dealer for the Carbahn tune offered peace of mind and a loaner car for the duration of the service, which was estimated up to two weeks. The total cost, which included maintaining the remote start feature, came to $2200, eliminating the need for piggyback systems like JB4 and potential complications. Carbahn, associated with Dinan, is known for its safe and dependable tunes, prioritizing reliability for daily drivers over extreme horsepower gains, which suits my needs perfectly. Plus, the readily available 100 octane fuel should provide a noticeable performance boost.
Considering further enhancements, I’m now exploring the XHP TCU tune. For those with tuned cars, what improvements does the XHP TCU tune bring to the driving experience and overall performance?
According to Carbahn’s website, their ECU tune for the Comp x-Drive model on 93 octane delivers the following gains:
Comp x-Drive Performance Figures – 93 Octane
- Calculated Flywheel Power:
- OEM Stock: 577 HP / 561 lb-ft TQ
- Tuned: 702 HP / 650 lb-ft TQ
- Measured Wheel Power:
- OEM Stock: 484 WHP / 471 lb-ft WTQ
- Tuned: 576 WHP / 533 lb-ft WTQ
Tuned Performance – 100 Octane
- Calculated Flywheel Power: Tuned: 724 HP / 655 lb-ft TQ
- Measured Wheel Power: Tuned: 594 WHP / 537 lb-ft WTQ
