Mtech bumper > non-mtech for cooling?

VegasM2 · 09-13-2011, 05:04 AM

I own a 2007 335i with a pre-LCI front bumper. I've put splitters on it. I'm interested in buying an Mtech front bumper thinking it will offer more air flow. From the looks of it compared to the non-mtech it would offer the IC with more air but the brake and oil cooler seem to be the same. Would it be worth the money for the amount of cooling i would get compared to the non-mtech bumper. This is aesthetics aside. Looking into pure function here. thanks for you input!

jippii ensio · 09-13-2011, 06:49 AM

The bigger opening might not increase cooling. We need to compare the stock opening to the "openings" in the FMIC, i.e. the parts from which the air goes through. The share of metal vs openings at the frontal area of an FMIC is quite a lot, so that you might have the stock bumper opening big enough for all that air that is able to go through the FMIC. I.e. basically, the opening in the bumper can be a lot smaller than the total frontal area of the FMIC.

secretsquirrel · 09-13-2011, 06:53 AM

Are you experiencing any cooling issues now? If not, it's probably not worth the investment for the cooling alone.

Bakeme521 · 09-13-2011, 08:49 AM

My cooling is noticeably better since I have switched.

samchoi604 · 09-13-2011, 03:26 PM

In terms of opening size for the E90, the difference between stock and mtech is pretty small. For E92 there's a bigger for difference, but for E90 I doubt you'll see any real world difference for cooling.

secretsquirrel · 09-13-2011, 04:16 PM

Since he already has an aftermarket FMIC, I doubt the change will do anything good.
I have a CXRacing FMIC, which has much of the IC hidden behind the stock bumper, yet my IAT's are great with repeated pulls in 100 degree heat. The OP has a HPF which is almost totally visible with the stock bumper.

rismo · 09-13-2011, 04:25 PM

Mtech front keeps your car noticable cooler... like 1-5 degrees celcius depending on the situation... I changed after one year at this is my personal experience... It's not like a day and night different.. but noticable!

Syndicategt · 09-13-2011, 04:42 PM

M3 Rep > all for more air

jlh335i · 09-13-2011, 05:53 PM

permanent bumper removal mod > m3 bumper

VegasM2 · 09-14-2011, 01:59 PM

thanks for the input guys!

Beemw335 · 09-14-2011, 02:04 PM

Quote:

Originally Posted by Syndicategt

M3 Rep > all for more air

I though it blocked off thcooler ducts??
Please let me know because I really want one but Ive been scared to put it because of that one reason.

jippii ensio · 09-14-2011, 02:15 PM

Quote:

Originally Posted by rismo123

Mtech front keeps your car noticable cooler... like 1-5 degrees celcius depending on the situation... I changed after one year at this is my personal experience... It's not like a day and night different.. but noticable!

Keeps your car cooler? In the cabin? IATs? Coolant temp? Oil temp? EGT? FMIC?... What do people mean by "cooler" in general?

Bakeme521 · 09-14-2011, 02:27 PM

Quote:

Originally Posted by Syndicategt

M3 Rep > all for more air

Disagree on a few notes. My roomate has the m3 rep bumper and my mtech has a slightly larger opening(e92). On top of the the air ducts are blocked for fog lights. My mtech gives each brake duct its own hole in the bumper and the oil cooler its own duct twice the size of stock.

chrisE92 · 09-14-2011, 02:34 PM

if you're willing to go the extra mile, you can actually use the 335is brake ducts with the pre-lci mtech bumper cover for a little more cooling. look up the thread made by "marcel"

Syndicategt · 09-14-2011, 02:56 PM

Quote:

Originally Posted by Bakeme521

Disagree on a few notes. My roomate has the m3 rep bumper and my mtech has a slightly larger opening(e92). On top of the the air ducts are blocked for fog lights. My mtech gives each brake duct its own hole in the bumper and the oil cooler its own duct twice the size of stock.

Your roomate did the install wrong

Fog light delete + M3 ducts gives you the "fake" brake ducts (which are only good at blowing air on the tire) and you still retain the oil cooler duct. I have the e90 version, so I'm not sure the size of the main face of the bumper.

To be honest, the benefits of the aftermarket bumpers for cooling are going to be so minimal there is no way of measuring any real gains. You want cooler temps, invest in a Water/Methanol injection system or a better FMIC.

Bakeme521 · 09-14-2011, 03:18 PM

Quote:

Originally Posted by Syndicategt

Your roomate did the install wrong

Fog light delete + M3 ducts gives you the "fake" brake ducts (which are only good at blowing air on the tire) and you still retain the oil cooler duct. I have the e90 version, so I'm not sure the size of the main face of the bumper.

To be honest, the benefits of the aftermarket bumpers for cooling are going to be so minimal there is no way of measuring any real gains. You want cooler temps, invest in a Water/Methanol injection system or a better FMIC.

I didn't know those fit, so I stand corrected. But technically he didn't do it wrong, some people like foglights. All I am saying is when I put my mtech bumper in I noticed lower oil temps and intake temps b/c my CX intercooler is really exposed.

Before:

After: (ignore hood gap, it is fixed now)

jippii ensio · 09-14-2011, 03:26 PM

Quote:

Originally Posted by Bakeme521

I didn't know those fit, so I stand corrected. But technically he didn't do it wrong, some people like foglights. All I am saying is when I put my mtech bumper in I noticed lower oil temps and intake temps b/c my CX intercooler is really exposed.

Before:

After: (ignore hood gap, it is fixed now)

In the upper pic the bumper functions as a shroud forcing the air through the FMIC. In the lower pic, there is room on both the right and left of the FMIC. I hope the air does not get through from the sides of the FMIC? In any case, the lower pic could benefit from shrouding.

WWM3 · 09-14-2011, 03:29 PM

Quote:

Originally Posted by Bakeme521

I didn't know those fit, so I stand corrected. But technically he didn't do it wrong, some people like foglights. All I am saying is when I put my mtech bumper in I noticed lower oil temps and intake temps b/c my CX intercooler is really exposed.

Before:

After: (ignore hood gap, it is fixed now)

Off topic - but the car looks great!

Bakeme521 · 09-14-2011, 03:39 PM

Quote:

Originally Posted by jippii ensio

In the upper pic the bumper functions as a shroud forcing the air through the FMIC. In the lower pic, there is room on both the right and left of the FMIC. I hope the air does not get through from the sides of the FMIC? In any case, the lower pic could benefit from shrouding.

Those black parts on both sides of the intercooler are the brake duct coolers, not just open holes. The right side is just a fog light and the left side is a fog light and the oil cooler duct.

Quote:

Originally Posted by WW330

Off topic - but the car looks great!

Thanks bro

rismo · 09-14-2011, 05:30 PM

Quote:

Originally Posted by jippii ensio

Keeps your car cooler? In the cabin? IATs? Coolant temp? Oil temp? EGT? FMIC?... What do people mean by "cooler" in general?

Oil temps went down... 1-5 degrees celcius, quite noticable...

TurboSid · 09-14-2011, 05:31 PM

no fog lights > fog lights.

JunkStory · 09-14-2011, 11:13 PM

Quote:

Originally Posted by Bakeme521

Those black parts on both sides of the intercooler are the brake duct coolers, not just open holes. The right side is just a fog light and the left side is a fog light and the oil cooler duct.

That's exactly the problem described by jippii ensio.. there is actually more air pressure in the first pic than in the second pic. This is the Venturi effect.

09-13-2011, 05:04 AM	#1
VegasM2 Second Lieutenant 86 Rep 195 Posts Drives: 2017 M2 LBB/Manual/Exc. Join Date: Sep 2010 Location: Las Vegas iTrader: (7)	Mtech bumper > non-mtech for cooling? I own a 2007 335i with a pre-LCI front bumper. I've put splitters on it. I'm interested in buying an Mtech front bumper thinking it will offer more air flow. From the looks of it compared to the non-mtech it would offer the IC with more air but the brake and oil cooler seem to be the same. Would it be worth the money for the amount of cooling i would get compared to the non-mtech bumper. This is aesthetics aside. Looking into pure function here. thanks for you input! __________________ 2017 M2\|LBB\|Manual\|Executive Package\|Fabspeed SportCat\|Dinan S4 Tuner w Big Turbo\|Remus Exhaust\|Dinan Intake\|Dinan Intercooler\|Dinan LPFP Upgrade Kit\|Ultimate Clutch Pedal\|BMS Clutch Stop
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09-13-2011, 06:49 AM	#2
jippii ensio Major 68 Rep 1,432 Posts Drives: 335i Join Date: Feb 2009 Location: On the road iTrader: (0)	The bigger opening might not increase cooling. We need to compare the stock opening to the "openings" in the FMIC, i.e. the parts from which the air goes through. The share of metal vs openings at the frontal area of an FMIC is quite a lot, so that you might have the stock bumper opening big enough for all that air that is able to go through the FMIC. I.e. basically, the opening in the bumper can be a lot smaller than the total frontal area of the FMIC.
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09-13-2011, 06:53 AM	#3
secretsquirrel Colonel 130 Rep 2,291 Posts Drives: f80 Join Date: Dec 2010 Location: Far North Dallas iTrader: (2)	Are you experiencing any cooling issues now? If not, it's probably not worth the investment for the cooling alone.
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09-13-2011, 08:49 AM	#4
Bakeme521 Some say... 239 Rep 4,296 Posts Drives: Fresh Join Date: Mar 2010 Location: Baton Rouge n NOLA iTrader: (12) Garage List 2007 BMW 335i [8.24]	My cooling is noticeably better since I have switched. __________________ I have exhaust and an intake...
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09-13-2011, 03:26 PM	#5
samchoi604 Colonel 60 Rep 2,334 Posts Drives: black on black Join Date: Mar 2009 Location: Burnaby, BC iTrader: (3)	In terms of opening size for the E90, the difference between stock and mtech is pretty small. For E92 there's a bigger for difference, but for E90 I doubt you'll see any real world difference for cooling.
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09-13-2011, 04:16 PM	#6
secretsquirrel Colonel 130 Rep 2,291 Posts Drives: f80 Join Date: Dec 2010 Location: Far North Dallas iTrader: (2)	Since he already has an aftermarket FMIC, I doubt the change will do anything good. I have a CXRacing FMIC, which has much of the IC hidden behind the stock bumper, yet my IAT's are great with repeated pulls in 100 degree heat. The OP has a HPF which is almost totally visible with the stock bumper.
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09-13-2011, 04:25 PM	#7
rismo Captain 76 Rep 911 Posts Drives: BMW E92 335 Join Date: Jul 2008 Location: Europe iTrader: (0)	Mtech front keeps your car noticable cooler... like 1-5 degrees celcius depending on the situation... I changed after one year at this is my personal experience... It's not like a day and night different.. but noticable! __________________ BMW 335 E92 09 - Full options - DKG - MHD by Buraq - RB Next Gen - RB Inlets/Outlet - Forge Diverter Valves - AR Catless DP - Afe Intake - Helix IC - FuelIT Stage 2 LPFP - Ar Oil Cooler - PPK Water Cooler - M3 Suspension - JRZ RS1 Shocks - Eibach Pro Springs - Drexler LSD - BMW IS Exhaust - Carbon Endurance Brake Pads - Stainless Steel Brake Lines - M101 Wheels - Michelin PS2 - M-Tech Body - M-Strutbar BMW M550i G30 2019 - BM3
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09-13-2011, 04:42 PM	#8
Syndicategt Brigadier General 153 Rep 3,730 Posts Drives: 335i Join Date: Sep 2009 Location: Nor Cal iTrader: (11)	M3 Rep > all for more air __________________ 2008 BMW 335i e90 - Sold - Rob Beck Turbos / PROcede V5 / Aquamist HFS-4 / AR Downpipes / AE Exhaust / ER Comp FMIC / ER CP / TiAL BOV / Custom Intake / RPI Scoops / Quaife LSD / Swift-Koni Coilovers / DSS HS / Morr VS8.2 Sig Black / Michelin PSS / P3 Boost Guage / M3 body / M3 steering wheel / Adam's Rotors / Hawk HPS / SS lines /
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09-13-2011, 05:53 PM	#9
jlh335i Private First Class 2 Rep 117 Posts Drives: f80 ymb Join Date: Aug 2009 Location: Texas iTrader: (0)	permanent bumper removal mod > m3 bumper
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09-14-2011, 01:59 PM	#10
VegasM2 Second Lieutenant 86 Rep 195 Posts Drives: 2017 M2 LBB/Manual/Exc. Join Date: Sep 2010 Location: Las Vegas iTrader: (7)	thanks for the input guys! __________________ 2017 M2\|LBB\|Manual\|Executive Package\|Fabspeed SportCat\|Dinan S4 Tuner w Big Turbo\|Remus Exhaust\|Dinan Intake\|Dinan Intercooler\|Dinan LPFP Upgrade Kit\|Ultimate Clutch Pedal\|BMS Clutch Stop
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09-14-2011, 02:34 PM	#14
chrisE92 Brigadier General 245 Rep 4,494 Posts Drives: Monaco Blue E92 Join Date: Sep 2007 Location: LA to HB iTrader: (21)	if you're willing to go the extra mile, you can actually use the 335is brake ducts with the pre-lci mtech bumper cover for a little more cooling. look up the thread made by "marcel" __________________ photos
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09-14-2011, 05:31 PM	#21
TurboSid Brigadier General 1112 Rep 3,262 Posts Drives: 2022 M4Cx BSM/FR Join Date: Apr 2008 Location: Florida iTrader: (4) Garage List 2008 335i [0.00]	no fog lights > fog lights. __________________ 2022 BSM/FR M4 Competition X-Drive 2017 MW/SO M4 ZCP [SOLD] • 2015 MW/SO M4 M-DCT FBO [SOLD] • 2011 AW/CR 335is DCT FBO [SOLD] • 2008 AW/CR 335i 6MT FBO [SOLD]
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