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Old 06-27-2009, 09:57 AM   #1
Grande D
Registered User
Join Date: Dec 2006
Location: Redwood City
Posts: 3,434
My Ride: E36 M3
Shark Injector/ Dinan Stage 2/ AA Software; Do they Remove ZHP Flat Spot?

I am looking in to fixing the dead/flat spot around 4,000 rpm on my ZHP. I know I can get the DME reprogrammed by BMW but my car has 116K, no chance I could get it free. My question is does any of the software, such as the Shark Injector, Dinan, or Active Autowerke actually fix the flat spot? I searched and found conflicting answers. I like the idea of the shark because it's cheaper than Dinan Stage 2 as far as I know and I could do it at home. I would get Stage 2 because I just got a used Dinan CAI. I like the AA software but don't want to ship my DME away. I am mainly looking for the improved throttle response, and redline. IS the raised redline with Dinan or Shark actually useful on a zhp with the cams or does the power band die up high? everyone

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