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BMW 3-Series (E90 E92) Forum
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Peak Boost?!?!?
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09-21-2010, 02:31 PM | #1 |
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Drives: black 335i e90 PRE-LCI
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Peak Boost?!?!?
I just installed a boost gauge and after the install it lead me to think what should I be boosting at?
I know stock is around 8.5 PSI, am I right? Well obviously my car is modded so am wondering what I should be boosting with my current mods, which are: -Ultimate Racing 2.5 downpipes -Stett Cold Air Intake -Forge DV (Yellow Spring) -JB3 Map 3 Acoording to my boost Gauge when I set the JB3 on map 0 am boosting around 9-10 PSI, when set to JB3 on map 3 it reads between 10-11 PSI. The car feels so much faster on map 3, but am wondering why the boost range is so close together.... just curious, don't want to worry over nothing.
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09-21-2010, 02:46 PM | #2 |
Jerry's Fault...
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Im not sure but I think u should be hitting between 10-12 depending on weather conditions???
All I DO know is you should put that bitch on map 5!
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09-21-2010, 02:46 PM | #3 | |
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Quote:
Map 3 does not change the max boost a lot, but the average boost vs. rpm is increased substantially, which results in better performances. |
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09-21-2010, 03:27 PM | #5 |
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Your DV spring might be taking part in your boost.
However 11-12 psi sounds about normal for map 3 I think. Jb3 log and send to Terry if you feel there is a problem. |
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09-21-2010, 04:35 PM | #6 |
Jerry's Fault...
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He doesn't have an intercooler. Shouldn't go above map 5 without one.
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09-21-2010, 07:28 PM | #7 |
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I know a good amount of people running map 7 on stock cars and they run perfect.Im running map 7 with filters and intercooler and also runs perfect.You just have to use 93 octane fuel.
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