Sti Tmic

[neill54]

ive been thinking about a few things and wondered what the pro's and con's are in fitting one to a wrx??

and what else should be fitted along with it?

neil

Edited September 22, 2008 by neill54

[thewelsho]

ive been thinking about a few things and wondered what the pro's and con's are in fitting one to a wrx??

and what else should be fitted along with it?

neil

Why would you want to upgrade to a STi TMIC? On its own in a standard car, it does't offer very much.

[neill54]

thats the kind of reply im after welsho jsut been talking about stuff today and this was mentioned i can see that the sti one is slighty bigger but just wanted to know really still trying to learn all about subaru's

what about ic spray then?

and hopefully it wont be that standard for long

neil

[paul555sti]

Neil the intercooler upgrade is a good thing as part of other mods ( getting a remap ), on its on you wont see too much improvement. I have an intercooler spray set up you could have if you want it. Since i fitted my front mount it isnt used anymore but again i am not sure how much benefit it would actually give you.

[WUZ]

STI TMIC has larger surface area therefore better cooling of charge temps. lower charge temps are good for any turbocharged car.

STI TMIC has Alloy "Y" pipe and silicon hose, not the cheap Black Plastic pipe that can split with age and under higher than average boost (they can go @ 1.3 Bar!)

2 good reason to upgrade there (unless you have the PPP Silicon "Y" pipe in which case its only 1)!

Russell

[neill54]

see now im getting somewhere so would i be better off doing both if i could with the silcone pipe etc

ideas at the mo is to uprate fuel pump maybe bigger injectors possibly a new intercooler(frount mount hopefully but cash flow might depict just the sti one etc) car is fully decatted

whats my best route really not really after big power just reliable good power with good boost

neil

[emoe]

see now im getting somewhere so would i be better off doing both if i could with the silcone pipe etc

ideas at the mo is to uprate fuel pump maybe bigger injectors possibly a new intercooler(frount mount hopefully but cash flow might depict just the sti one etc) car is fully decatted

whats my best route really not really after big power just reliable good power with good boost

neil

If the intercooler will fit straight on then its a good investment if you dont want to go for a front mount.

Especially if you have the old rubber hose to the IC.

WUZ is right, they are HUGE compared to the WRX or std one, and so they will offer better cooling.

HOWEVER, IMHO you need to rig some sort of shield up for the left hand side as they draw a lot of heat from the turbo and exhaust side. Its not necessary but a great mod if you can do it.

If youre seriously looking at chaing the pump injectors and a remap, and would consider a front mount then dont waste the money on the TMIC, just wait and get a bog front mount.

[thewelsho]

If the intercooler will fit straight on then its a good investment if you dont want to go for a front mount.

Especially if you have the old rubber hose to the IC.

WUZ is right, they are HUGE compared to the WRX or std one, and so they will offer better cooling.

HOWEVER, IMHO you need to rig some sort of shield up for the left hand side as they draw a lot of heat from the turbo and exhaust side. Its not necessary but a great mod if you can do it.

If youre seriously looking at chaing the pump injectors and a remap, and would consider a front mount then dont waste the money on the TMIC, just wait and get a bog front mount.

Front mount? An STi TMIC is good for over 400bhp so a FM is overkill for the sort of moderate upgrades that Neil is suggesting. Andy.F suggested my getting one when I got my car mapped on the standard WRX TMIC, so I did. I went back to him for some tweeks and the there was practially no change in power outputs with the STi TMIC. The only reason to uprate your intercooler is for safety reasons, it is a support mod as opposed to a power mod.

Might I also be correct in saying that due to the longer pipe-runs with a FMIC, more lag is introduced.

[paul555sti]

Front mount? An STi TMIC is good for over 400bhp so a FM is overkill for the sort of moderate upgrades that Neil is suggesting. Andy.F suggested my getting one when I got my car mapped on the standard WRX TMIC, so I did. I went back to him for some tweeks and the there was practially no change in power outputs with the STi TMIC. The only reason to uprate your intercooler is for safety reasons, it is a support mod as opposed to a power mod.

Might I also be correct in saying that due to the longer pipe-runs with a FMIC, more lag is introduced.

Not sure what age Neils car is but if it is an early classic then it will have the slanted top mount. Replacing this with the newage intercooler is quite a big job. When i was modding mines i spoke to Andy and he said normally the top mount is the way to go but on the early cars the front mount is the best option. As far as the lag goes well i am more than happy with how mines performs with the front mount.

[emoe]

Front mount? An STi TMIC is good for over 400bhp so a FM is overkill for the sort of moderate upgrades that Neil is suggesting. Andy.F suggested my getting one when I got my car mapped on the standard WRX TMIC, so I did. I went back to him for some tweeks and the there was practially no change in power outputs with the STi TMIC. The only reason to uprate your intercooler is for safety reasons, it is a support mod as opposed to a power mod.

Might I also be correct in saying that due to the longer pipe-runs with a FMIC, more lag is introduced.

You are right with the lag JD but the benefits are better.

Early cars are hell to retrofit the newer TMIC so fmic is the way to go.

Also TMIC does drag heat from the engine bay and therefore can cause DET to occour earlier.

[ScoobySounds]

I currently have my scoob running at a good level1, about 315 or so and its a stunning drive, very resposnive, and I really enjoy it. Then I starterd looking and reading accounts on the next stage (level2), I don't think its for me. (Of course, I'm not saying its not for you!)

I'm only learning about this, but my conclusions were thus;

Firstly - fitting, say, an sti7 tmic to a classic is a total of a job. and if I were to uprate the top mount and get 550cc injectors, then i'd need to fit an uprated fuel pressure regulator, and a bigger turbo to make use of it all. Once i've done that, then it would be pointless without uprated headers and up pipe. all this FOR STARTERS! then you are starting to put excessive strain on the engine internals and have to start thinking about THAT...

i stopped there and decided that I was happy the way it is. I thought spending all that money, and risking making the car LESS drivable is silly, and there's not enough road for more power anyway.. I'm just gona chill and enjoy the car, maybe go on holiday with the savings.

Chris.

[ScoobySounds]

in addition neil,

if you aren't into the big power and just want a fun car, that sounds just like me, and I'm more than happy with mine now. Just look into the level1 stuff, ie decat, fuel pump, hoses, remap.. and then work on the brakes and handling. stop.

[frank c]

Firstly - fitting, say, an sti7 tmic to a classic is a total of a job.

Are you sure ??

[emoe]

Are you sure ??

I am!!

i tried a while back and the whole intercooler needed some major mods with someone with a tig-welder.

The unit will fit in nicely, but it hits against the IAC valve and has to be cut back about 10 mm in that area.

[frank c]

I am!!

i tried a while back and the whole intercooler needed some major mods with someone with a tig-welder.

The unit will fit in nicely, but it hits against the IAC valve and has to be cut back about 10 mm in that area.

But Scoobysounds has a version 5/6

Edited September 23, 2008 by Frank C

[emoe]

But Scoobysounds has a version 5/6

but was it modded to fit? and also does he have a Phase 2 engine?

Mine is a phase 1.5 and they dont fit without the mod

[emoe]

That is a pain as you have to weld the new one!!!

most people dont have a tig welder lying around!

Edited September 23, 2008 by emoe

[neill54]

quite a debate going here

the reason i asked about the tmic is i can mod it no probs me being a welder etc my car is a 1992 wrx full decat and thats it i was thing the fuel pressure reg uprated fuel pump and maybe a injectors then get it remapped

its just at the minute boost is all over the place one minute its great pulls very strong the next is sputtering and popping and banging

im in the process of fixing minor leaks in the exhaust system(think one of the headers is burst) also after new plugs so after that im hoping it should be a bit better but as usual you get some cash together and something happens ripped an 18" tyre to bits yesterday D'oh

so in conclusion should i get an sti top mount( if i can get it to fit) or splash the cash and go for a front mount?

neil

[neill54]

why?

pros and cons of each?

neil

[colin_ross]

Why? - Fit basically. The slanty i/c you have isn't and easy swap with the newage top mount as mentioed.

A front mount may cost more depending on what type you buy and there will be more involved in fitting it i.e. you'll have to cut you bumper and it may introduce more lag. It's a pain of a job but less so than a tmic in your case.

The charge temps will be better though and if top speed runs are your thing it will be safer.

[neill54]

theres where my lack knowledge of turbos and intercoolers gets me im used to my old pug 205's

top speed runs are not my things its how you get there that counts really ive had my car for over 2 years now enjoyed every minute nearly ,it came limited and still is to 112 mph

so what im after is more of a drag type car but just for the road so is it all in the torque?

neil

[wilky]

theres where my lack knowledge of turbos and intercoolers gets me im used to my old pug 205's

top speed runs are not my things its how you get there that counts really ive had my car for over 2 years now enjoyed every minute nearly ,it came limited and still is to 112 mph

so what im after is more of a drag type car but just for the road so is it all in the torque?

neil

In that case its the STI T/M you want. Anything can be made to fit, if you need to get creative then so be it.

You will need to lose the "guts" out of your scoop and it would be a good idea to get an new STI scoop copy that will fit a classic to ensure good air flow. You can channel the air onto the new topmount by surrounding it with foam rubber strips.

heatsoak is always a drama even with a fmic, once you start moving forward the air cools it anyway. With a heatshield it just holds the heat as well, been there tried that. Yes it induces det, but are you going to run 500bhp and try to win TOTB? No. So relax.

With a decent TMIC compared to a FMIC with the power you are looking at the difference is about 1bhp so save yourself the expense and work out how your going to shoehorn it in.

Borrow one, take it home and work out how your going to do it. I fitted one into a leggy GTB which really shouldnt have the space either, but I did it.

Slightly later than yours but there you go. This cost £310 to do.

Callum W

Edited September 23, 2008 by Wilky

[colin_ross]

Callum, that's a phase 2 motor which is a piece of p!ss to make it fit. The OP has a phase 1, I wouldn't even try to make it happen.

[wilky]

Callum, that's a phase 2 motor which is a piece of p!ss to make it fit. The OP has a phase 1, I wouldn't even try to make it happen.

I know.

It can be done.

Callum W

[colin_ross]

I'm sure it can, doesn't make it a good idea though.

I'd be looking for a fmic and saving myself a load of hassle. All in my humble opinion of course