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      08-22-2012, 12:38 PM   #4
Max7SD
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Drives: 2012 BMW 750i
Join Date: Aug 2012
Location: San Diego

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Quote:
Originally Posted by 1_BAD_F01 View Post
All I can tell you is that I had purchased a similar piggy-back tune for my F01 from VAC motorsports.
Had the car tested before and after on a dyno. Have me a decent increase of about 40hp and 45 torques. That's to the wheels of course. Was very happy untill about 3 months after, the car started to choke on me, at some points even shutting off on me even while driving. It was absolutely horrible. After doing research, I found out that piggy-back tunes on cars like ours are nothing but trouble. with the tune telling the car it's doing lower boost but at the same time it's doing much higher boost, you are causing a reduction error to stop the motor from any damage and therefore a reduction in power output.
I mean, that's my thought on it.
If u decide to do a tune, I think Dinan or Hartge is the safest way to go.
Good luck man.
Thank you very much for your input...
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