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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 > Need help with jb4



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      03-30-2013, 08:33 PM   #1
lionis335
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Need help with jb4

Hello i have a 335 e90 with AA downlipes AA exhaust AA blow off AFE intake and JB4
What map sould i use??
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      03-30-2013, 08:37 PM   #2
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Depends on your octane more than anything else. Assuming 93 octane pump, I would be on map 1 or map 5. If your timing looks good on map 1 you could also try out map 2, but on the stock intercooler I don't think it would be the best option.
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      03-30-2013, 08:38 PM   #3
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map 2 or map 5.... map 7 if you use a healthy dose of E85 or race fuel, but log it and check with terry or the forums for advice as thats aggressive.

Map 5 is great because it will auto tune for ya..
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      03-30-2013, 09:29 PM   #4
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Map 5 all the time
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      03-30-2013, 10:04 PM   #5
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2 or 5 on 93 - 5 on 93 + E85 up to 40 or 50% - Over 50% E85 you need a BMS/COBB flash. Best all round map is 5
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      03-31-2013, 10:17 AM   #6
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I forgot i have intercooler and 50% e85 -50% 93
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      03-31-2013, 10:21 AM   #7
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Quote:
Originally Posted by lionis335 View Post
I forgot i have intercooler and 50% e85 -50% 93
Use Map 5, or map 7 if you are FORSURE you have a good mix of ethanol.

but if you are running regular pump gas id use map 5.
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      03-31-2013, 11:08 AM   #8
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Quote:
Originally Posted by lionis335 View Post
I forgot i have intercooler and 50% e85 -50% 93
5 is still the best. Might be worth a try with some logs to see what is happening but personally I would stay away from 7 without real racing fuel.
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