How does the Cobb AP compare against the FP Pro Cal ?
Pro Cal says it adds 50hp to the engine and Cobb does HP to the rear wheels the correct way IMO
I currently have the Pro Cal tune on my RR but like anything We want more power trying to talk myself in to the Cobb AP if it makes the difference.
Could it be a bad wheel ? I only have 2k miles on mine went to Discount Tire right after I got it and bought the certificates with included balance and rotation and I have no issues so far plan to do it every 5k miles or so