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#1
04-27-2006, 11:41 PM
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My 10.5psi 4.6is
Well guys, I got the new 2.85" pulley put on on my x5 and got a new belt to go with it. The shop spent a lot of time trying to make the tune perfect for this extra boost and the larger injectors. We started out making about 7.5 psi with a lot belt slip and some KR readings and detonation issues. It took a good 3 days of solid tuning to eliminate all the KR and once we got the new belt on we were 10.5psi of boost. I was actually very surprised at getting 10.5psi out of the 2.85 pulley, I was expecting more around 9psi. Anyways I finally drove it home tonight and boy does it pull hard, it sound like a jet at WOT. The launch is hard too. I'm very pleased with the boost, now if only I can find a good header for the 4.6. I took some pictures in the garage as it is dark here, but I will take some more tomorrow and hopefully grab a video.
  
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2007 Jeep SRT-8 (going to be supercharged) 2007 Trailblazer SS 2003 X5 4.6is ESS supercharged 2004 Silverado SS supercharged 2005 Escalade supercharged 2003 Corvette ZO6 supercharged 1999 Mercedes S600 
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