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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 > What to do first Meth or FMIC



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      02-02-2011, 11:53 PM   #23
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Quote:
Originally Posted by themyst View Post
if you don't want to deal with refilling a meth tank, checking the setup for clogs, leaks, etc, just skip the idea. A properly setup flow sensor will let you know immediately if there's a problem though...

If you do a quick one gear blast through 2nd or 3rd, maybe you don't need a FMIC and meth might be a better bet. But if you're like some of us who enjoy doing high speed runs through 5th gear, I'd get the FMIC first. No amount of meth will suppress heatsoak enough on that POS stock FMIC at the higher boost levels.
+1, my top end totally changed with the fmic upgrade.
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      02-04-2011, 01:47 AM   #24
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Quote:
Originally Posted by themyst View Post
if you don't want to deal with refilling a meth tank, checking the setup for clogs, leaks, etc, just skip the idea. A properly setup flow sensor will let you know immediately if there's a problem though...

If you do a quick one gear blast through 2nd or 3rd, maybe you don't need a FMIC and meth might be a better bet. But if you're like some of us who enjoy doing high speed runs through 5th gear, I'd get the FMIC first. No amount of meth will suppress heatsoak enough on that POS stock FMIC at the higher boost levels.
I don't do too many high speed runs up to 5th. With what you're saying sounds like I should try meth.
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      02-04-2011, 02:01 AM   #25
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Used fmic/ used meth kit that's your way out =] , can't really say fmic because meth adds a lot of power and it's really awesome , but at the same time at high boost levels stock fmic heat soaks but honestly , HONESTLY I've never seen high IAT when using meth with out fmic, but fmic sure does help a lot, less pressure drop, meth is really not hard to maintain if you get the rigth setup, go with snow performance and you'll be good. I say METH if you have to choose between 2 , but if you want to go step by step in the rigth direction , it should be fmic 1st , and then meth =]
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      02-04-2011, 09:00 AM   #26
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I don't do too many high speed runs up to 5th. With what you're saying sounds like I should try meth.
I disagree. I hit 160 to 170 f on 1st thru 4th gear runs. Fmic is a must imo. Ets has a fmic that requires no cutting and is completely reversible. I would do that before meth.

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      02-04-2011, 10:33 AM   #27
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Originally Posted by ZTUNER View Post
I disagree. I hit 160 to 170 f on 1st thru 4th gear runs. Fmic is a must imo. Ets has a fmic that requires no cutting and is completely reversible. I would do that before meth.

Harry
Bro meth/water also cools down the charge, if you will look at logs with meth you'll understand
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      02-04-2011, 10:39 AM   #28
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I did FMIC first, but if I were to do it again I would have done the meth. The FMIC basically takes the car and eliminates that sluggish feeling that comes with summer driving. I noticed a bit more power, especially in the top end. With meth, I noticed the power immediately, and I REALLY like the fact that my car, even with 40k miles without a catch can, will have its intake valves cleaned every time I hit the gas. In my eyes, meth will pay for itself over the next 50k miles simply because I won't ever have to get the valves cleaned.
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      02-04-2011, 12:04 PM   #29
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Meth would be the best HP/Dollar and far surpass the cooling of an FMIC.

Not to say an FMIC wont help, but the methanol when done will go a lot farther for cooling and power.

I stand by the choice of meth first. FMIC shortly after.

Last edited by Jeff@TopGearSolutions; 02-04-2011 at 12:10 PM..
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      02-04-2011, 12:17 PM   #30
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Quote:
Originally Posted by Mikey_Bo0sts View Post
Bro meth/water also cools down the charge, if you will look at logs with meth you'll understand
no kidding - i know it does but its harder to deal with on a day to day basis compared to a install and forget fmic.

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      02-04-2011, 12:18 PM   #31
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If its me, I would do both since your not always on meth and the times that your not the FMIC will still give you power..
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