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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N54 Turbo Engine / Drivetrain / Exhaust Modifications - 335i > Protune w cobb accessport

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      02-13-2013, 02:42 AM   #1
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Protune w cobb accessport

If you have an accessport, is there still substantial improvement in power to warrant a cobb protune? Also, can you drop that protune onto the accessport?
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      02-13-2013, 02:59 AM   #2

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A PROtune will be worth it. As far as how much of a horsepower gain you will see depends largely on what supporting mods and fuel you run. If getting a PROtune on regular 93 octane then you will not see HUGE gains in peak numbers over the OTS stage 2+ aggressive map. You will see a an improvement in power under the curve and smoothness(if it's a good tuner.)
However, going from stage 2+ agg to, for instance, an e40 mix tune there will be a VERY significant jump in power.

The tune is loaded onto the Accessport and that's how it is flashed to the DME.
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      02-13-2013, 05:11 AM   #3
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just get an e-tune http://www.protuningfreaks.com/ Jake@PTF here on the board
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