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    • Carbahn Autoworks finally releases BMW F90 M5 ECU tune - Stage 1 flash 774 horsepower

      It is nice to see Carbahn Autoworks (Steve Dinan's new venture) getting to the F90 M5. It is also nice to see a before and after dynograph included for the Stage I tune essentially refuting Steve Dinan's own position and getting with the times.


      Note, the dyno is at the wheels:


      Certainly a nice increase but there will be those who say there are stronger tunes out there for the F90 M5 S63TU3 V8. True, but there are no stronger flash tunes that will match the factory warranty.

      Considering what we recently saw happen to an F90 M5 the warranty is no doubt a strong selling point.

      Respectable and this software certainly has its place in the marketplace.

      774 flywheel HP & 726 LB/FT flywheel torque

      • *This can ONLY be installed at an Authorized Carbahn dealer!
      • Stage 1 Software $1500
      • Matching Warranty Option $1500
      • Includes Competition Models
      • Top Speed Governor Removed

      Quote Originally Posted by Carbahn Autoworks
      With software only, power numbers are boosted to 774 HP and 726 LB/FT at the flywheel. All CarBahn software is available with our matching new car warranty option. Install at dealer only.

      This article was originally published in forum thread: Carbahn Autoworks finally releases BMW F90 M5 ECU tune - Stage 1 flash 774 horsepower started by Sticky View original post
      Comments 4 Comments
      1. Bowser330's Avatar
        Bowser330 -
        I read a statement in the noelle thread either here or on that other bimmer forum that essentially said, sure they offer a warranty but how liquid are they to be able to afford to pay out on every car that could potentially come in for repairs?

        in my opinion small tuning shops should have a warranty reserve account that reserves money for a % of tunes they sell based on the reliability of the s63tu. Manufacturer defects aren’t uncommon and so they need to be prepared to go toe to toe with bmw to fight the failure or be financially prepared to pay for it. I hope they are prepared.
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by Bowser330 Click here to enlarge
        they offer a warranty but how liquid are they to be able to afford to pay out on every car that could potentially come in for repairs?
        Well the warranty process also isn't as friendly as they would have you believe: https://www.bimmerboost.com/content....e-pipe-failure

        Still though, this is a big operation. Carbahn can afford it and APR/Dinan is now a goliath so no problem there.
      1. maxnix's Avatar
        maxnix -
        Well, it seems the connecting rods are the first weakness in this engine when tuning. so a warranty is good and not exceeding certain torque specifications down low in the power band seems necessary. Was this on 91 ACN gas only?

        Thus I am a little surprised to see that spike in the torque curve at 3000 RPM.

        People have to remember idiots will buy these tunes and drive them like idiots hitting peak demands before the lubrication achieves optimal operating temperatures. A tuner can always get a larger number by going over the edge, but for what purpose?
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by maxnix Click here to enlarge
        Was this on 91 ACN gas only?
        I believe so.