BMW M5 540 E39 740 750 E38 545 550 E60 X5 Software Upgrade - POWERCHIP in Aurora, CO

BMW M5 540 E39 740 750 E38 545 550 E60 X5 Software Upgrade - POWERCHIP

If any of you are looking for a way to increase horsepower & torque of your car, truck and/or SUV, take a look of what POWERCHIP has to offer at/choices.asp?entry=powerchipgroup%2Ecom.
To make the long story short, I have a E39 BMW M5 with slightly over 100K miles. For the last 5K miles I have not been able to get my M5 to run properly. I have Cold Air Intake and High Flow Air Mass Meters and normally the next step would have been is to install DINAN Stage 3 Software to support the upgrade. At least that what the dealer would tell you. So that what I did; got DINAN Stage 3 Installed. Well, that was a bad choice. After spending hundreds of dollars at a local dealership, my car actually got worst. DINAN Stage 3 software SUCKED; Only dealer can instil and uninstall/reinstall. To instal it will cost nearly $800 and to uninstall it will run another $100 (may be less if dealer feels bad for you).
I had DINAN Stage 3 Software installed before; Car was running too reach, failed emissions and was giving 9-10MPG. There was absolutely no difference in acceleration. I did not feel any difference at all, other than ridiculously poor MPG.
When software was removed car would not perform right. To the point that I actually had to park it. After spending over a month on http

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