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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 > 2 quick jb4 questions



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      08-13-2013, 11:51 PM   #23
tomtom11
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Quote:
Originally Posted by Krells View Post
The default waste gate values felt good to me coming from the lagfix maps. I would honestly just set it to map 5, let it adapt, and log it. What map and mods did you have with the jb3?
i dont want to use map 5 since it seems to be more conservative. when i had jb3 i only had DCI and i would use map 5 and get about 14.8 psi. now i have jb4 and got downpipes so i want to run more boost but map 2 is 14.5 psi and map 5 is even less. thats why i want to try and run map 6 with about 15psi. i just really want to know what the lagfix on the jb3 is equivalent to on the jb4 default wastegate position
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      08-13-2013, 11:51 PM   #24
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Originally Posted by zeel View Post
Go to the bms forum and start searching. Also be careful with map6....and please please datalog to make sure your car is running correctly.
what do you mean bms forum? do you mean n54tech? with map 6 dont you just adjust the boost psi how you want it?
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      08-14-2013, 05:21 AM   #25
Krells
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Quote:
Originally Posted by tomtom11 View Post
i dont want to use map 5 since it seems to be more conservative. when i had jb3 i only had DCI and i would use map 5 and get about 14.8 psi. now i have jb4 and got downpipes so i want to run more boost but map 2 is 14.5 psi and map 5 is even less. thats why i want to try and run map 6 with about 15psi. i just really want to know what the lagfix on the jb3 is equivalent to on the jb4 default wastegate position
Default wastegate position is preset at 80. Not sure why you think map 5 is less than 14.5psi? I run map 5 with only dci and 50/50 93 and e85. I get 17psi.
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      08-14-2013, 07:22 AM   #26
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My map 5 boosts up to 17 depending on your fuel and other things
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      08-14-2013, 10:57 AM   #27
tomtom11
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Quote:
Originally Posted by Krells View Post
Default wastegate position is preset at 80. Not sure why you think map 5 is less than 14.5psi? I run map 5 with only dci and 50/50 93 and e85. I get 17psi.
you get 17psi because you use e85. i dont want to run e85. if i dont run e85 map 5 doesnt boost anywhere near that. when you say default wastegate position is 80 are you refering to what the equivalent was to lagfix was on jb3?
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