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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 > Priority...Intercooler or Downpipes?



View Poll Results: Which part is more beneficial
Intercooler 58 59.18%
Downpipes 40 40.82%
Voters: 98. You may not vote on this poll

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      02-15-2013, 12:04 PM   #23
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Quote:
Originally Posted by Wesley Crusher View Post
And then deal with the problems that come with cheap downpipes, DING DING DING
Nothing wrong with them. Done two sets of those with zero fitment issues. first gen AR pipes were a bigger PITA with their larger size in regards to vibration and fitment. Haven't done a set of ARs in a while so can't say if they fixed it.

So what exactly is wrong with cheap pipes?
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      02-15-2013, 12:20 PM   #24
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Quote:
Originally Posted by themyst View Post

So what exactly is wrong with cheap pipes?
Fitment issues, cracked welds, etc... Racelands seem to be a hit or miss. I wouldn't risk it. YMMV
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      02-15-2013, 01:20 PM   #25
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How much of a difference does an FMIC make in enthusiastic street driving in moderate temps? Are there benefits over a stock IC when it isn't heat soaked?

Downpipes sound like a pain since I have to deal with CA smog checks.
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      02-15-2013, 01:32 PM   #26
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Quote:
Originally Posted by derrick603 View Post
How much of a difference does an FMIC make in enthusiastic street driving in moderate temps? Are there benefits over a stock IC when it isn't heat soaked?

Downpipes sound like a pain since I have to deal with CA smog checks.
An upgraded FMIC is good news for engine power and efficiency no matter the conditions outside, the increased weight is the only drawback I can think of. Bottom line- if you want to make consistant power you need a better intercooler or meth. I'm always a bit surprised at how many people with N54s run tunes+catless downpipes without upgraded intercoolers, the OE unit is such a piece of junk. The power must dissapear within a few pulls
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      02-15-2013, 02:08 PM   #27
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Quote:
Originally Posted by jlcf22 View Post
didn't even know they were coming out with a new design is it coming out on the next batch? still waiting for my fmic and dp on order still
check their facebook page
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      02-15-2013, 05:09 PM   #28
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Quote:
Originally Posted by Wesley Crusher View Post
Fitment issues, cracked welds, etc... Racelands seem to be a hit or miss. I wouldn't risk it. YMMV
Been running Racelands for 2 years now and no issues. Racelands ftw!
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      06-12-2013, 05:45 PM   #29
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Glad I read this. I just started upgrading my car so I am new to this. Just got intake, DP, and tune. I was told that if I am not looking to add 200+ hp over stock then I am ok with not upgrading my intercooler. In reading this thread it looks quite the opposite and I can actually benefit from an intercooler upgrade for efficiency and power gain. I just use my car as a daily driver and will never take my car anything pass a few good hard runs going home. I also intend to keep my exhaust stock as well. Please provide some feedback.
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      06-12-2013, 05:57 PM   #30
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Quote:
Originally Posted by bmwchin View Post
Glad I read this. I just started upgrading my car so I am new to this. Just got intake, DP, and tune. I was told that if I am not looking to add 200+ hp over stock then I am ok with not upgrading my intercooler. In reading this thread it looks quite the opposite and I can actually benefit from an intercooler upgrade for efficiency and power gain. I just use my car as a daily driver and will never take my car anything pass a few good hard runs going home. I also intend to keep my exhaust stock as well. Please provide some feedback.
Yes, there is definitely a benefit to an intercooler even on a stock car but definitely with a tune. The stock interocoler is just too inefficient.
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      06-12-2013, 06:06 PM   #31
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would say FMIC then DP
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      06-13-2013, 01:54 PM   #32
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Good info, I would have thought downpipes would give the better gains.
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      06-13-2013, 02:51 PM   #33
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Quote:
Originally Posted by ecw View Post
Good info, I would have thought downpipes would give the better gains.
Depends on what is meant by gain.. Fmic you will gain more reliability in being able to push the car harder and keep temps lower and with downpipes you gain a good amount of hp and your turbos spool much faster and smoother thus taking some stress off the turbos
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      06-13-2013, 02:51 PM   #34
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Both are great and should be upgraded, but you better add a tune to that combo in order to take advantage of the gains. A FMIC will allow you to target more aggressive timing, especially in the higher RPM range where these cars tend to need it most and the DP's will help significantly with flow in the mid/upper RPM range as well.

IMO all three are crucial if you're looking to maximize power gains on this platform.
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      06-13-2013, 08:39 PM   #35
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+1 for FMIC.
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      06-13-2013, 09:28 PM   #36
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No votes for an LS? I kid, I kid!
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      06-14-2013, 08:41 AM   #37
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I did DPs first, but it was winter when I put them in and knew that I would have a FMIC before the spring. FMIC went into the car in march.

I went vrsf with both and have been extremely happy all around.

Depending on where you are (if it get hot in the summer) if go FMIC first then DPs just based on the time of year you're doing the mods.
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      06-14-2013, 09:39 AM   #38
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DP's.

Your turbos will thank you for it.
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      06-20-2013, 11:14 AM   #39
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I am leaning towards VCRF FMIC myself. Have any of you done this install yourself and how much of a PITA is it without a lift?
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      06-20-2013, 12:26 PM   #40
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Quote:
Originally Posted by jlcf22 View Post
just get both from VRSF for just over 700 dollars kill one bird with two stones
I think I would rather kill TWO birds with ONE stone.
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