N54 throttle body

spain4065 · 05-03-2013, 04:55 AM

Has anyone here looked into getting the stock throttle body bore out a bit?
Always used maxbore in the past with previous cars and had great results?
What kind of results would you expect and is this a good mod?

Thanks.

NVM · 05-03-2013, 05:45 AM

Dont think you will see much gains.. although a redesign of the intake may be an idea

1speedbike · 05-03-2013, 10:33 PM

Not quite the same thing, but I had a throttle body spacer in my car for a while and it did jack diddly squat. I gave it away to a friend because I didn't think anyone should pay for it when it literally did nothing to improve the engine. I don't think you'd see much gains (as mentioned) with your idea, either. But who knows..

spain4065 · 05-04-2013, 07:00 AM

eh...worth a shot to ask, that's why i posted here first before I fubar anything up. Thanks!

BrokenVert · 05-04-2013, 09:11 AM

The intake system on the N54 is actually really well designed. It isn't worth messing with it until you are putting down seriously large bhp numbers.

SfValley335i · 05-04-2013, 09:35 AM

No one has tried to bore it out. Give it a try and report back

Colt · 05-04-2013, 12:26 PM

Anyone know what size the throttle body is off the top of their head?

Freon · 05-04-2013, 05:24 PM

Increasing throttle body size is not very common for turbocharged engines. I wouldn't bother.

aramsey80 · 05-08-2013, 08:09 PM

Quote:

Originally Posted by Angerman

Anyone know what size the throttle body is off the top of their head?

It's big. I think around 80mm.

GermX-85 · 05-08-2013, 08:28 PM

Boring the TB on a F/I car doesn't really do much. But if it was a N/A motor that's a different story you'll see gains.

Colt · 05-08-2013, 09:58 PM

Quote:

Originally Posted by aramsey80

It's big. I think around 80mm.

I figured around there....thanks

135iDCT · 05-09-2013, 01:29 AM

you will see a good results with bigger intake manifold and ported heads

GermX-85 · 05-09-2013, 10:03 AM

Quote:

Originally Posted by 135iDCT

you will see a good results with bigger intake manifold and ported heads

MIL.SPEC · 03-05-2014, 01:56 AM

Quote:

Originally Posted by Freon

Increasing throttle body size is not very common for turbocharged engines. I wouldn't bother.

This is probably the least accurate thing I read on the Internet today.

bmw0bsession · 03-05-2014, 03:13 PM

Quote:

Originally Posted by 1speedbike

Not quite the same thing, but I had a throttle body spacer in my car for a while and it did jack diddly squat. I gave it away to a friend because I didn't think anyone should pay for it when it literally did nothing to improve the engine. I don't think you'd see much gains (as mentioned) with your idea, either. But who knows..

Did it make the whistling sound

stevo135i · 03-07-2014, 10:01 PM

Get a throttle body spacer! Create turbulent air flow! Lol

05-03-2013, 04:55 AM	#1
spain4065 First Lieutenant 18 Rep 303 Posts Drives: EM1 and 08 135i Join Date: Sep 2012 Location: DC/MD iTrader: (1)	N54 throttle body Has anyone here looked into getting the stock throttle body bore out a bit? Always used maxbore in the past with previous cars and had great results? What kind of results would you expect and is this a good mod? Thanks.
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05-03-2013, 05:45 AM	#2
NVM Automotive Tuning Specialist 6 Rep 20 Posts Drives: BMW M2 N55 Lci Join Date: Nov 2011 Location: Birmingham iTrader: (0)	Dont think you will see much gains.. although a redesign of the intake may be an idea __________________ "The Passion For Performance"
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05-03-2013, 10:33 PM	#3
1speedbike Brigadier General 732 Rep 3,274 Posts Drives: 2022 X4 M40i, 2008 135i Join Date: Jun 2008 Location: MKE iTrader: (15)	Not quite the same thing, but I had a throttle body spacer in my car for a while and it did jack diddly squat. I gave it away to a friend because I didn't think anyone should pay for it when it literally did nothing to improve the engine. I don't think you'd see much gains (as mentioned) with your idea, either. But who knows.. __________________ 2022 X4 M40i - 2008 135i - 2015 F700GS On Order - 2024 i4 M50 Scruffy's gonna die the way he lived... Mmhm.
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05-04-2013, 07:00 AM	#4
spain4065 First Lieutenant 18 Rep 303 Posts Drives: EM1 and 08 135i Join Date: Sep 2012 Location: DC/MD iTrader: (1)	eh...worth a shot to ask, that's why i posted here first before I fubar anything up. Thanks!
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05-04-2013, 09:11 AM	#5
BrokenVert Resident Kerbalnaut 477 Rep 10,703 Posts Drives: Topless Brute/Hybrid Boogaloo Join Date: Apr 2009 Location: Fahrvergnügen/NY iTrader: (0)	The intake system on the N54 is actually really well designed. It isn't worth messing with it until you are putting down seriously large bhp numbers.
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05-04-2013, 09:35 AM	#6
SfValley335i Colonel 164 Rep 2,409 Posts Drives: Current:135i Sold:335i sedan Join Date: Mar 2007 Location: City of Angels iTrader: (8)	No one has tried to bore it out. Give it a try and report back
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05-04-2013, 05:24 PM	#8
Freon Major 81 Rep 1,051 Posts Drives: 2009 135i Join Date: Nov 2007 Location: Indianapolis iTrader: (3)	Increasing throttle body size is not very common for turbocharged engines. I wouldn't bother. __________________ 2009 BMW 135i 6MT Sport, AFE intake, Cobb AP, Apex 18x8.5+9.5, 255/275 PSS
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05-08-2013, 08:28 PM	#10
GermX-85 Lieutenant 37 Rep 499 Posts Drives: 135i M-sport 6MT Join Date: Mar 2013 Location: Alameda ,CA iTrader: (6)	Boring the TB on a F/I car doesn't really do much. But if it was a N/A motor that's a different story you'll see gains. __________________ 135i////Cobb Stage 2/VRSF 3" catless DP/BMS intake/BMS OCC/AMS FMIC/CP-e exhaust/19" 8.5 et40 9.5 et45 VMR VB3's BUILD THREAD http://www.1addicts.com/forums/showthread.php?t=832779
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05-09-2013, 01:29 AM	#12
135iDCT Lieutenant 137 Rep 571 Posts Drives: 135I Join Date: Apr 2011 Location: wm iTrader: (0)	you will see a good results with bigger intake manifold and ported heads
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03-07-2014, 10:01 PM	#16
stevo135i New Member 0 Rep 13 Posts Drives: BMW 135i cabrio N54 Join Date: Mar 2014 Location: Sydney iTrader: (0)	Get a throttle body spacer! Create turbulent air flow! Lol
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