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Old 10-03-2006, 08:38 PM   #1
rebos123
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Default Bigger TMIC with Water/Meth Injection?

On a 2.0 liter WRX with a 16G evoIII turbo, would using the stock TMIC be OK if I am using water/meth injection to cool the intake charge? Or would I benefit from using a larger TMIC? Reason I ask is that reading through some of the stickys I saw where people were actually trying to eliminate the intercooler through use of water injection. I don't want to try that but I am wondering if a larger intercooler is necessary if you have water/meth injection.....
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Old 10-03-2006, 08:59 PM   #2
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You should get two maps. One with meth & one w/o. In that case, you would "need" the bigger intercooler for the non-meth map.
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Old 10-03-2006, 09:17 PM   #3
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Yes, the stock top mount would be ok. Yes, your car might make more power with a larger top mount. No, a larger top mount is not necessary and might carry with it some negative effects on performance. From my experience, a larger top mount gets heat soaked more when the car is stopped(from being closer to the radiant heat of the turbo and downpipe), and takes longer to cool down once moving(from less flow from the scoop per size compared to a smaller intercooler). It also costs money you don't need to be spending, especially with your setup and injection. Course this is just my opinion.

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Old 10-04-2006, 12:13 AM   #4
05wrxwgn
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so basically, if your running a stock turbo, dp, up, exhaust, and intake with an OTS tune, your not really benefiting from an FMIC?
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Old 10-04-2006, 12:46 AM   #5
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A larger IC is not really needed if you are using anything smaller than an 18g-20g since you will likely not push enough air that the methanol couldn't cool the intake charge enough...if you have the money though a large IC can't hurt...
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Old 10-04-2006, 03:51 AM   #6
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Quote:
Originally Posted by 05wrxwgn View Post
so basically, if your running a stock turbo, dp, up, exhaust, and intake with an OTS tune, your not really benefiting from an FMIC?
That's not what I said. No matter what your setup is, you can(possibly in theory) benefit from any type of larger intercooler. Your engine could run in a dangerous way if you're not specifically tuned for the larger intercooler, and even then, you could lose performance in ways. At the same time, larger intercoolers usually cost a good amount of money, and they aren't the most cost effective mod when speaking of power per dollar. This makes it so that if you don't need one, it might just be a good idea to find something else to spend your money on.

Going with what I said above, if you had a choice between a custom tune and a larger intercooler, the custom tune would probably be a better choice(power per dollar wise). If you're already planning on getting a custom tune and aren't running injection, injection would probably be a better choice then a larger tmic(power per....). If you have injection and a stock turbo, and are already planning on getting a tune, a larger turbo might be a better choice then a larger intercooler(power per...). Same with some other mods. What I'm trying to say is that imo, there are benefits and drawbacks to having a larger intercooler, and unless it's needed for flow or cooling reasons, it's usually low on the totum pole in the order of importance and cost effectiveness for what you get. Course this is just my opinion.

peace

Last edited by hippy; 10-04-2006 at 06:43 AM.
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Old 10-04-2006, 07:40 AM   #7
rebos123
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thanks for the replies. It confirms what I thought. I am going to keep the stock TMIC for now. The fitment with the stock splitter and distance from the turbo/downpipe make the stocker the obvious choice for me. Plus the 16GevoIII, while a bigger turbo, isn't a "monster" that needs a crazy big intercooler....
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Old 10-04-2006, 08:24 AM   #8
05wrxwgn
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Quote:
Originally Posted by hippy View Post
That's not what I said. No matter what your setup is, you can(possibly in theory) benefit from any type of larger intercooler. Your engine could run in a dangerous way if you're not specifically tuned for the larger intercooler, and even then, you could lose performance in ways. At the same time, larger intercoolers usually cost a good amount of money, and they aren't the most cost effective mod when speaking of power per dollar. This makes it so that if you don't need one, it might just be a good idea to find something else to spend your money on.

Going with what I said above, if you had a choice between a custom tune and a larger intercooler, the custom tune would probably be a better choice(power per dollar wise). If you're already planning on getting a custom tune and aren't running injection, injection would probably be a better choice then a larger tmic(power per....). If you have injection and a stock turbo, and are already planning on getting a tune, a larger turbo might be a better choice then a larger intercooler(power per...). Same with some other mods. What I'm trying to say is that imo, there are benefits and drawbacks to having a larger intercooler, and unless it's needed for flow or cooling reasons, it's usually low on the totum pole in the order of importance and cost effectiveness for what you get. Course this is just my opinion.

peace
ok. that clears it up. I have heard mixed opinions so I am just setting apart the facts from the fiction. I have heard soo many diff theories that I didnt know what was going on. Your explanation was by far the best I have heard so far
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