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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 vs. Water/Meth



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      04-13-2011, 12:14 AM   #1
dado337
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Intercooler vs. Water/Meth

Ok so I have catless downpipes, exhaust, intake and JB4. Was wondering what should be my next step for the most power gain? I'm guessing intercooler before water/meth but what your guys input.

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      04-13-2011, 12:15 AM   #2
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What are good brands with best results of each mod...
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      04-13-2011, 02:21 AM   #3
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Meth
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      04-13-2011, 02:56 AM   #4
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Quote:
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Meth
this. lower iat + higher octane ftw!
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      04-13-2011, 07:40 AM   #5
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Meth.
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      04-13-2011, 07:47 AM   #6
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The intercooler is a permanent mod, you won't always run with meth or water. However, I have to say that methanol or even water injection drops the IAT more that the best of the intercoolers.
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      04-13-2011, 09:00 AM   #7
dado337
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Also keep in mind I am a mile high so my car does not breath as easily up here. Buy looks like meth I the way to go from what you guys say.
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      04-13-2011, 09:09 AM   #8
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Quote:
Originally Posted by tscdennab View Post
The intercooler is a permanent mod, you won't always run with meth or water. However, I have to say that methanol or even water injection drops the IAT more that the best of the intercoolers.
The initial IAT drop of meth is very noticeable, however heatsoak will still be a huge issue as the stock intercooler is terrible at long sustained runs. I would get the FMIC first then consider a meth kit. Repeatable consistent power is more important than a meth kit on a system that can't breathe well.

This comes from someone who installed meth before fmic.
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      04-13-2011, 11:15 AM   #9
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^ this
I would get the fmic first. Granted it won't reduce your IATs as much as MEth would but at least it is a permanent mod => Passive cooling! You don't want to be spraying all the time (I presume)
Once you have that in place, go for meth
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      04-13-2011, 11:56 AM   #10
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Meth has better gains but it's not on 100% of the time.

FMIC is best for daily applications.

I'm very pleased with my Aquamist and ER FMIC but there are many brands out there, just depends on how much you want to spend and what types of failsafes you want for the meth. I was the first N54 to run an Aquamist kit, they are hugly popular with other cars, and I have nothing but great resuslts with it, plus it integrates with my Procede's map switching. ER's intercooler is big and requires cutting but it came with a CF shroud around the IC and a chargepipe with BOV.
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      04-13-2011, 12:03 PM   #11
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Intercooler first IMO. Meth is very useful, but the intercooler will always be working for you and I'd also hold off on the purchase of meth until the plug and play meth kit is finished.
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      04-13-2011, 12:30 PM   #12
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Methanol injection will add more power and best bang for the buck.

Intercooler will improve efficiency of what you currently have.
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      04-13-2011, 12:42 PM   #13
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if you're considering meth, then the pressure drop across the fmic would be the primary consideration then cooling in my opinion. I believe most upgraded fmics will yield about 1.5psi less at the outlet.
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      04-13-2011, 01:52 PM   #14
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FMIC should always come first to eliminate possible heat soak (unless you beat the crap out of it). Get that then use the meth, it would be a lot healthier for the car.
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      04-13-2011, 02:59 PM   #15
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Quote:
Originally Posted by Mflowt5 View Post
FMIC should always come first to eliminate possible heat soak (unless you beat the crap out of it). Get that then use the meth, it would be a lot healthier for the car.
I agree with this.
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      04-13-2011, 09:55 PM   #16
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What is a good brand intercooler with best performance? Is cp-e a good one? Because I can get a really good deal on one locally. Who's got one and what are your thoughts?
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      04-13-2011, 10:09 PM   #17
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CP-E, ETS, HPF, AA, Helix, AMS are all good
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      04-23-2011, 12:02 AM   #18
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How much is a good meth kit?
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      04-26-2011, 10:56 PM   #19
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What are good cost effective meth kits? Or is anyone selling a used one?
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      04-26-2011, 10:58 PM   #20
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my personal opinion, spring for any basic kit, but get a flow sensor with it. I recommend the SnowPerformance SafeInjection. Topgearsolutions can help you out.
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      04-26-2011, 11:05 PM   #21
dado337
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I dont really know who makes meth kits...
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