Quote:
Originally Posted by badblack550xi
We only did it on Alpina turbos, need to find someone to try it on stockies hahah
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I have a 650i with an N63 tuned by BPC, Its Making 440WHP and 515WTQ. I'm thinking about going Stage 2 with downpipes. Any info you can give me on getting the most power out of the car. Also, I'm having some cooling issue, My car sets right under 250 degrees when driving normal and sometimes hits a little over 250 when running it hard.