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      04-12-2011, 02:18 AM   #13
northern2020
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Drives: '11 X5 M / '01 B5 S4/ 15 328d
Join Date: Jan 2011
Location: Alberta

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So what kind of horsepower and torque would I see for each of the mods below

- ESS tune for 91 octane fuel
- supersprint catless downpipes
- Akra full exhaust vs stock exhaust

I've read close to 670 hp in a previous thread?
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