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exhaust mani or fmic?

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gstcrazy95

10+ Year Contributor
109
0
Mar 16, 2010
Muncie, Indiana
So i need the opinion of what i should buy. Should i either get a gospeed fmic or a forced performance manifold? I worked my butt off at work so i'm rewarding myself and want to order one tomorrow but i dont know which one to go with?


thanks
 
Id go with a FMIC kit, seeing as a 2g manifold flows perfectly fine for what your setup is (basing this off you profile info).
 
I would say go with a MBC and wideband a/f setup. Would get more out of that then either the mani or the FMIC.

If your dead set on either a FMIC or the FP manifold. I would say go with the FP manifold. The FMIC would hurt performance with the t-25 more then it would help.
 
If your dead set on either a FMIC or the FP manifold. I would say go with the FP manifold. The FMIC would hurt performance with the t-25 more then it would help.
This may be, but then again, you wont see too much improvement from switching a 2g manifold to a fp, if he is only using a t25. A 2g manifold flows good enough, and if/when he decides to switch turbos, I'm sure whatever the replacement is, will still be a good match for a 2g manifold. People are too quick to to jump on upgraded manifold (cool factor?...idk), when the one they have, is just fine for what they're running.
 
If your profile is up to date then I would have to agree with the others. You could get more out of other things. If you insist on one of those two though, I say to go with the fmic. If you eventually upgrade your turbo at all, you'll most likely need a better intercooler. You won't necessarily need a better manifold though. The 2g manifold flows pretty well and you could port it as well to get it to flow a little better.
 
thanks for the quick replys everyone. I def. appreciate it. Now i don't know what to do haha. The opinions are great. How would the fmic affect the t-25? and i do plan on upgrading to a e316g around christmas time. I know with this ill have to upgrade fuel pump and injectors to get use out of it.
 
I put a fmic on my t25 and im tellin you i couldnt tell a difference at all. It makes your car sound better and look better and if your ever plan on upgrading your turbo, you will already have a fmic. I vote get a fmic, and then if you have money left over get a boost controller. If you do lose power that will makeup for it.
 
You wont notice a difference. Its like trying to tell the difference between a long route and short intercooler setup, the extra lag won't be noticeable.
 
i wouldnt worry bout a exhaust manifold just yet i would wait till you at least upgrade to a bigger turbo. so i would go with the fmic
 
yah dang I didn't realize it was that close. Yah i looked at the total price differences too and theres only a 1$ difference so i think i'm going with the fmic. does anyone run/know any good insight on godspeed fmic? or any others that would be a good fit (budget is a problem though)
 
fmic is overrated, only reason I got one was for the hard piping and 1g bov flange. Also came with a jpipe to make my 16g install easier. As for an upgrade. most people could suffice with out even getting one. Especially a monster one like mine.
2g manifolds work great, dont really need upgraded.
Id go with what was said above and go with a wideband and maybe fuel upgrades if you havent already done them.
 
..Id go with what was said above and go with a wideband and maybe fuel upgrades if you havent already done them.

I agree with a wideband, but fuel upgrades are unnecessary, if you're running a stock turbo, and pretty much stock everything else. You wont be able to up the boost just by adding fuel (unless you have meth injection or something of the sort), because of a little thing called detonation. You have to get that air cold somehow, a stock sidemounts don't do much for cooling more than they are made for.

If you're hell bent on getting one of the 2 right now, get the FMIC, and when it comes time for the 16g, pick up some injectors and a fuel pump.
 
OP be advised that a FMIC will not yield any hp gains unless you are exceeding the cooling efficiency of the stock IC. As a matter of fact you will lose throttle response by having the stock turbo trying to fill the larger core of the FMIC - prepare to experience boost lag.

As for the FP manifold it is a good flowing unit, but not necessary. The stock 2G manifold does a decent job and its a common upgrade for us 1G guys. I run a ported 2G manifold with ported turbo housing and Evo3 O2 housing. So basically opening the exhaust will just reveal the next bottle neck in the system.

At your level of upgrades I would recommend a turbo upgrade - it will yield immediate results, and will only increase as your supporting mods increase.
 
everyone is right when they say the 2g mani flows good enough, so forget the manifold at this point.


now if your getting a 16g...look into

FMIC
fuelpump and rewire it
injectors
mbc
wideband and boost gauge
dsmlink


those should be your next mods, NOT INCLUDING MAINTENANCE !!...thats always first.
 
Is your profile up to date?

I say FMIC, that way you can sell your upper intercooler pipe and make some money back. Another thing, is you won't have to worry about upgrading in the future to support your bigger turbo when you get it on there. The pressure drop will make it seem a little slower, and lag a little more, but sometimes some sacrifice is necessary in the short run to accomplish the ultimate goal.
 
IMO before any big mod you should have

Boost gauge
Wideband A/F
Egt or oil psi

Get your gauges and tuning done properly then worry about the big things. :thumb:
 
I say a tubular manifold, just because they look mean as hell. Plus the sidemount is enough for the t25. Adding a bigger front mount will just give you more lag. IMO
 
Yah I'm def going to upgrade the turbo but wouldn't upgrading the turbo call for a larger intercooler? turbo is getting upgraded in 3-5 months.

It depends on the size of the turbo and how much boost you plan to run.

A proper upgrade path will always focus on safety first. After you upgrade your intake and exhaust you want to focus on the fuel system. Then get you a wide band O2 sesor before you start to increase the boost or alter the A/F ratios.

Some people switch to a large FMIC because they like the look of it and not because its necessary. I'm not saying don't get a FMIC, I'm just saying its not necessary at the moment - expect your car's acceleration to suffer with the stock turbo.
 
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