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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N55 Turbo Engine Tuning and Exhaust Modifications - 335i Tuning > JB4 Stage 2 map 2 and map 5 on stock downpipe



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      02-01-2013, 06:53 PM   #1
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JB4 Stage 2 map 2 and map 5 on stock downpipe

Is there any issues with this set up?

I recently took off my ar design catless downpipe. I am just wondering if I can run the jb4 stage 2 on map 2 or map 5 without the catless downpipe. I fill 93 octane only. Long term effects/issues?

Thanks in advance.
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      02-02-2013, 09:35 AM   #2
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anyone?
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      02-02-2013, 10:23 AM   #3
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Your suppose to use map 1 with stock down pipes. I used map 2 and map5 before I went catless for a few weeks without any issues but use at your own risk.
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