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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > NA Engine (non-turbo) / Drivetrain / Exhaust Modifications > Effective 328i hp upgrade



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      11-02-2010, 09:13 PM   #1
royalblack888
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Effective 328i hp upgrade

What's the best bang for ur buck hp upgrade for a 07 328i?
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      11-02-2010, 09:15 PM   #2
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a 335i

Sorry that was mean...
I'd say tune>header>intake in that order.
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      11-02-2010, 09:15 PM   #3
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Either Headers for a bolt on

or a true Tune for software

depending on which road you want to take.

2 best options for hp gains for the $$ that are currently available
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      11-02-2010, 09:16 PM   #4
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^^ useful comment.. Try a 330i 3 stage intake manifold conversion i would say

edit:damnit craven u beat me to it, not ur comment im talking about , 335i comment
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      11-02-2010, 09:19 PM   #5
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Quote:
Originally Posted by joshuo View Post
a 335i

Sorry that was mean...
I'd say tune>header>intake in that order.
ha nice change
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      11-02-2010, 09:20 PM   #6
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Quote:
Originally Posted by JL 325i View Post
^^ useful comment.. Try a 330i 3 stage intake manifold conversion i would say

edit:damnit craven u beat me to it, not ur comment im talking about , 335i comment
Lol I know, i almost pulled the flyswatter out on him

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the 330 manifold swap is a useful mod, but does require a tune to really maximize the gains
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      11-02-2010, 09:21 PM   #7
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2006 330i  [9.00]
http://www.burgertuning.com/BMS_Power_Box.html
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      11-02-2010, 09:21 PM   #8
bmwonbrembos
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Quote:
Originally Posted by JL 325i View Post
^^ useful comment.. Try a 330i 3 stage intake manifold conversion i would say

edit:damnit craven u beat me to it, not ur comment im talking about , 335i comment
how much power does that add?
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      11-02-2010, 09:25 PM   #9
Gavin@MMW
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you get about 8whp and 8wtq by just bolting the conversion on, but with a tune - a 325 can make 330 numbers.
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      11-03-2010, 12:33 PM   #10
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If you do a 330 manifold it only adds peak power but loses a lot of midrange. It might actually be slower with no tune. Make sure you get a tune if you go the manifold route.
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      11-03-2010, 01:02 PM   #11
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you're never going to get huge gains, with that said torque multiplier... get a lsd with change in gearing =)
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      11-03-2010, 02:27 PM   #12
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gintani tune or AA tune. pbx for the best bang for your buck...but doesnt add much.

intake and exhaust help... but I would go with a tune before anything.
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