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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 > jb4 map 3 question



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      05-14-2012, 12:06 PM   #1
amill411
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jb4 map 3 question

I was reading the map 5 discussion and it seems the highest target boost is 17psi.

What's the highest target psi with map 3?

I would assume with the added cooling/octane boost of meth that you would run slightly higher psi's?

Also what are the scaling/additive options for? What exactly do they control and how should they be properly setup?
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      05-14-2012, 12:41 PM   #2
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Quote:
Originally Posted by amill411 View Post
I was reading the map 5 discussion and it seems the highest target boost is 17psi.

What's the highest target psi with map 3?

I would assume with the added cooling/octane boost of meth that you would run slightly higher psi's?

Also what are the scaling/additive options for? What exactly do they control and how should they be properly setup?
map3 is map2 with meth additive, so you set the additive.

Meth additive is how much boos you want to add once meth is spraying. A meth additive of 30 = 3PSI of boost added.

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      05-14-2012, 12:58 PM   #3
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Sooooo..... Does the new update help or better map 3???
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      05-14-2012, 08:54 PM   #4
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so meth additive at 50 would be 19.5 psi?I have it at 50 and never see the boost gauge more than 17psi
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      05-14-2012, 09:00 PM   #5
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Quote:
Originally Posted by Randomaccess335 View Post
Sooooo..... Does the new update help or better map 3???
This. I've been thinking about updating mine to the 5/11 but would it even make a difference? Would it be more powerful to run map 5 + additive?


Quote:
Originally Posted by gzim335 View Post
so meth additive at 50 would be 19.5 psi?I have it at 50 and never see the boost gauge more than 17psi
Also curious as about this.
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      05-15-2012, 12:02 AM   #6
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Quote:
Originally Posted by gzim335
so meth additive at 50 would be 19.5 psi?I have it at 50 and never see the boost gauge more than 17psi
If u have 18ohm board your max boost is 17.5psi.

15ohm is about 19psi. I believe....u wanna confirm on this Mike...
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      05-15-2012, 12:05 AM   #7
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You are limited by the 18ohm board.
Just switch to 15 ohm.
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