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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 > Intercooler upgrade question



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      03-17-2015, 11:32 AM   #1
MK335i
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Intercooler upgrade question

Is it worth upgrading the FMIC? I have the DCI upgrade but I hate how hot these engines seem to run, especially in the hot summer months that are coming up.

I'm running COBB stage 1 Aggressive which requires no upgrades.

Just trying to get some more airflow in there and wondering if its worth the money?
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      03-17-2015, 11:34 AM   #2
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Absolutely worth upgrading the FMIC. The IAT on these cars heats up super fast during a WOT run due to the inefficient stock FMIC. Do a datalog and you'll see.
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      03-17-2015, 11:57 AM   #3
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Yep! Stage 1 + FMIC is a faster map then Stage 2 for just downpipes too.

The stock intercooler is inefficent even on a stock tune car. FMIC should be everyone's first mod.
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      03-17-2015, 12:11 PM   #4
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I just did mine over the weekend. Was fbo minus fmic for 5 months and got used to the heatsoak after the 1st run or so.. Flooring it now back to back runs gets me kinda scared thinking something isn't right lol
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      03-17-2015, 12:12 PM   #5
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Quote:
Originally Posted by MK335i View Post
Is it worth upgrading the FMIC? I have the DCI upgrade but I hate how hot these engines seem to run, especially in the hot summer months that are coming up.

I'm running COBB stage 1 Aggressive which requires no upgrades.

Just trying to get some more airflow in there and wondering if its worth the money?
Absolutely . The stock intercooler is one of worst components of this car.
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      03-17-2015, 09:38 PM   #6
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Quote:
Originally Posted by MK335i View Post
Is it worth upgrading the FMIC? I have the DCI upgrade but I hate how hot these engines seem to run, especially in the hot summer months that are coming up.

I'm running COBB stage 1 Aggressive which requires no upgrades.

Just trying to get some more airflow in there and wondering if its worth the money?
Just went FBO 2 weeks ago....it's ridiculous what Cobb stage 2+ FMIC Aggressive is compared to stock.....over and over again...consistently brilliant. Need to catch up with you next time I am in the Ville...
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      03-17-2015, 09:45 PM   #7
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Quote:
Originally Posted by srbarnes4ever View Post
Just went FBO 2 weeks ago....it's ridiculous what Cobb stage 2+ FMIC Aggressive is compared to stock.....over and over again...consistently brilliant. Need to catch up with you next time I am in the Ville...
No question, I just did 7 VRSF, really cooler IAT on pulls.
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      03-17-2015, 10:02 PM   #8
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Great mod for the 335. I also opted for the 7" VRSF and its a great product.
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      03-17-2015, 10:07 PM   #9
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An intercooler is hands down the best mod available for this car. The OEM intercooler can barely handle the stock turbos and REALLY struggles once you increase boost pressure.
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      03-17-2015, 11:28 PM   #10
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I just had a hard time believing it's a 45min job.took me 5hrs to trim and all. Stupid piping and elbow wasn't being fair
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      03-17-2015, 11:33 PM   #11
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Quote:
Originally Posted by mojobmw_e90 View Post
I just had a hard time believing it's a 45min job.took me 5hrs to trim and all. Stupid piping and elbow wasn't being fair
Depends on how experienced you are with intercooler install.
First time should take around 2 hours.
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      03-18-2015, 10:58 AM   #12
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Quote:
Originally Posted by mike@x-ph.com View Post
Depends on how experienced you are with intercooler install.
First time should take around 2 hours.
I'm not a expert but can work on cars. Took me 1.5hr to swap out the water pump and t stat. I just think the 7'' is little to big for the small openings even after trimming, and explanation on removing the stock connectors wasn't good either.
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      03-18-2015, 09:23 PM   #13
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I have an ER FMIC for sale if you need one man just pm me. but yes FMIC is above all a must have!
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      03-19-2015, 09:48 AM   #14
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Quote:
Originally Posted by srbarnes4ever View Post
Just went FBO 2 weeks ago....it's ridiculous what Cobb stage 2+ FMIC Aggressive is compared to stock.....over and over again...consistently brilliant. Need to catch up with you next time I am in the Ville...
Yeah man hit me up for sure! Send me a PM and we can exchange info
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