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W211 AMG Discuss the W211 AMG's such as the E55 and the E63

what should a modded e55 boost?

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Old Apr 11, 2015 | 01:11 AM
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15 S63, 18 Ram 2500 Cummins
what should a modded e55 boost?
I got ec pulley, ec mid headers, full 3" exhaust, no cats, tune, heat exchanger, belt wrap kit, tcu... What kind of boost should I see?
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Old Apr 11, 2015 | 09:17 AM
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There is a chart floating around that shows what the calculated boost should be with each pulley combination, so you could start with that. However, you will see a boost loss with headers and a free-flowing exhaust, so the chart wouldn't be spot-on.
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Old Apr 11, 2015 | 05:28 PM
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Old Apr 11, 2015 | 11:56 PM
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I have a 83mm eurocharged supercharger pulley and a stock crank, so what size is the stock crank?
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Old Apr 12, 2015 | 12:07 AM
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154

Your ratio would be 1.85, so slightly lower than the 168/90 combo on that chart.ound the
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Old Apr 12, 2015 | 12:56 AM
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I assume 90 is the stock sc pulley size? If so then the boost is correct I remember Jeremy saying something about 15.1 lbs of boost during our road tune
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Old Apr 12, 2015 | 01:00 AM
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Originally Posted by HeissRod
154

Your ratio would be 1.85, so slightly lower than the 168/90 combo on that chart.ound the
What's the 168/90 combo mean?
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Old Apr 12, 2015 | 01:44 AM
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Originally Posted by Hammer Down
I assume 90 is the stock sc pulley size? If so then the boost is correct I remember Jeremy saying something about 15.1 lbs of boost during our road tune
For stock crank + 83 upper? No way. According to that chart, it would theoretically be around 13lbs.

Originally Posted by vikingdiesel
What's the 168/90 combo mean?
168 lower/90 upper
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Old Apr 12, 2015 | 01:46 AM
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I thought i have 154 lower and 83 upper
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Old Apr 12, 2015 | 02:00 AM
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You do. I said your ratio would be close to the 168/90 combo.
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Old Apr 12, 2015 | 02:12 AM
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OT: whats the benefit of the fixed SC pulley over the clutch SC pulley?
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Old Apr 12, 2015 | 02:17 AM
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Originally Posted by HeissRod
For stock crank + 83 upper? No way. According to that chart, it would theoretically be around 13lbs.



168 lower/90 upper
It's been all over the board that I have a 185 crankshaft pulley. My question was is the stock supercharger pulley 90? If so then the chart is accurate.
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Old Apr 12, 2015 | 11:57 AM
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Originally Posted by Hammer Down
It's been all over the board that I have a 185 crankshaft pulley. My question was is the stock supercharger pulley 90? If so then the chart is accurate.
Gotcha. You're post made it seem as if the OP should have 15lbs.
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Old Apr 12, 2015 | 02:27 PM
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Originally Posted by HeissRod
Gotcha. You're post made it seem as if the OP should have 15lbs.
My bad I thought I mentioned something about my road test with Jeremy
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