I think no but im not totally sure. Ive got a ej20g, its all stock except for some bolt on stuff and I dont have any future plans to upgrade turbo. I am going to get the car tuned, hopefully soon, and get the most out of the stock turbo and injectors etc. I am interested in someday running larger injectors and getting the most out of the stock turbo and I wouldnt be apposed to changing turbos when/if mine dies. So why not wait until I can justify installing a FMIC later? My car isnt painted and I have a ver1-4 front bumper and I know I will have to hack that inner grill off to fit a FMIC and who knows what else. SO to make a long story short should I get a FMIC, hack my bumper then get it painted so it looks nice in the future or just keep my TMIC. For what its worth I have a FXT TMIC now.

Thanks!

i had to hack the crap out of mine and i need to hack even more
i have the early ebay kit (the newer autobahn88 kits looks better)
you would need the tune + injectors to take advantage of it
but it should take you to 300 whp

If you don't plan on upgrading your turbo, then you don't need a fmic ! Plain and simple.

If you don't plan on upgrading your turbo, then you don't need a fmic ! Plain and simple.

but what about for maxing out the TD05?

thats my plan. FMIC goes on soon. then injectors. :D

For what you are doing, the FMIC is not needed. The most sensible upgrade I think is to find a used slanty STi IC so you can use the cast/silicon feed pipe. I found mine for just under $100. The other option is to find an AVO feedpipe upgrade that will work with the std slanty IC. Those are a little bit spendy though. The upgrade is worthy if for nothing else you eliminate the worry of the plastic accordion thing spitting. It's a common failure especially when you up the boost a lot. But flow is so much improved when you get rid of that thing.

Also making sure you have the proper ducting for the scoop is a cheap and simple way of improving your IC efficiency.

Remember the early WRC cars used that small slanty IC to win championships.

-Rob

i had to hack the crap out of mine and i need to hack even more
i have the early ebay kit (the newer autobahn88 kits looks better)
you would need the tune + injectors to take advantage of it
but it should take you to 300 whp

See this is what im worried about. Did you have to hack up painted surfaces or just remove that grill piece?

painted surfaces
the inside walls where the grill is and the bottom to clear the IC pipes..

the other option is a arc unit .. there is one on yahoo.jp right now

but ill disagree that the stock G unit is sufficient with any thing other than stock boost, they fall apart above 18 psi which the td05 +injectors can easily support

and FWIW
my slanty IC would be untouchably hot after a 60 sec auto-x run

Maybe I should get some injectors and FMIC then :) What injectors should I get?

Maybe I should get some injectors and FMIC then :) What injectors should I get?Yes you should and you wont regret it;)


By Andy Forrest:

The top mount intercooler (TMIC) which sits under the scoop on the top of the engine on all these cars can be susceptible to under-bonnet heat, especially following being stationary after heavy driving. For this reason it is sensible to allow the "heatsoak" to dissipate with good airflow at low boost after fast road driving or if you have had to sit stationary for a while.

The core area exposed to airflow and the volume and mass of the core have increased as the years progressed. The Samco or similar intercooler hoses available for the UK MY97-00 models have superior strength and airflow and are a very worthwhile modification.

The effectiveness of the OE intercoolers varies throughout the years. The early 93-96 slanty type will limit power to around 310 bhp whilst the 99-00 can run to around 330 bhp. The STI MY01 onwards is capable of over 450bhp with an appropriately sized turbo.

Fitting a later type intercooler is a popular upgrade although it is by no means a simple task. Some custom fabrication can be required in most cases. There are a number of after market top mount intercoolers which are true bolt on items which are capable of high 300 bhp.%soak and ensures an adequate cool air flow at all speeds, the downside of fitting a FMIC before it is really necessary is the increased lag after a gearshift and sometimes it induces compressor surge.

Fitting complexity depends upon the manufacturer, in most cases cutting of the bumper is required. Off the shelf units are available to support up to 800 bhp.

Nobody says anything now,huh? :lol:

To be honest i say no. My main reason is there is alot more piping involved in a FMIC install, rather than a TMIC, which means you have to pressurize so much more air to reach boost. Unless your running a larger turbo you may see some loss/no gain in your lower end boost. That is just my opinion, i dont have any numbers or anything to prove it, i just always assumed that would be the result to a front mount on a TD04. Good Luck.

To be honest i say no. My main reason is there is alot more piping involved in a FMIC install, rather than a TMIC, which means you have to pressurize so much more air to reach boost. Unless your running a larger turbo you may see some loss/no gain in your lower end boost. That is just my opinion, i dont have any numbers or anything to prove it, i just always assumed that would be the result to a front mount on a TD04. Good Luck.I assumed he was talking about a TD05.

To be honest i say no. My main reason is there is alot more piping involved in a FMIC install, rather than a TMIC, which means you have to pressurize so much more air to reach boost. Unless your running a larger turbo you may see some loss/no gain in your lower end boost. That is just my opinion, i dont have any numbers or anything to prove it, i just always assumed that would be the result to a front mount on a TD04. Good Luck.

myth
no noticeable change

I do have td05. What injectors should I be looking at? Do any sidefeed injectors fit the ej20g fuel rails or am i looking for specific injectors? I have no idea what im looking for atm :)

myth
no noticeable change

Hm, now i know. Glad i got that cleared up for me too lol, that is what was holding me out on getting one.

td05-16 small on a 2.0..
600s would be about perfect
but the 04-06 sti 550s are so much cheaper that is not worth it

Thanks Jaxx! Are there any others i should look out for or 04-06 only?

seems like yellowtop came in more than one year

the phase 1 ej20k yellow tops are only 480cc

Ok I found the injectors. What do I need to do with the filter and maf? Do I need another bov or can I use the stock one?

did i fail to mention that you will need to modify the rails to use the 04-06 stis

ya :( got details of the mods?

http://fecker.co.uk/scooby/product.php?id=2 Will this work?

yup
thats the ticket ..

http://fecker.co.uk/scooby/product.php?id=2 Will this work?That or you can get the ej18 fuel rails.

That or you can get the ej18 fuel rails.

sorta ...
the mounting tabs point the wrong way you have to cut them off the G rails and have them tig welded on the 1.8 rails
i used to have a great pictures but the host ing company went out of business

the adapters are easier for $60

LINK

http://forums.nasioc.com/forums/showthread.php?t=1219646&highlight=ej20g+injector

sorta ...
the mounting tabs point the wrong way you have to cut them off the G rails and have them tig welded on the 1.8 rails
i used to have a great pictures but the host ing company went out of business

the adapters are easier for $60I used to have this setup.....and it works pretty good.

Most of Nasioc is usually opposed to using a fmic with the stock turbo, but it's really common in the UK. The only thing that sucks is hacking up a beautiful bumper for a fmic. :(

http://iwalani.smugmug.com/photos/150626023_bGUum-L.jpg
http://iwalani.smugmug.com/photos/214238535_8Axdm-L.jpg

what should i do about the bov and the filter box?

what should i do about the bov and the filter box?

get a maf adapter so you can use a cone. and then get the bov flange welded onto the FMIC piping and hose it into the same spot it goes into with the stock setup

Is there anything else I need to know? Is there any other part thats going to need upgrading? Is the stock boost solenoid and maf going to handle the increased boost?

Is there anything else I need to know? Is there any other part thats going to need upgrading? Is the stock boost solenoid and maf going to handle the increased boost?Yes,you should be fine.