anybody know what model this is from? doesnt look like std early wrx which is what i have. been used as tool tray too!

 

Looks like a v1-v2 STi interwarmer

 

no good then?

 

My oil cooler looks bigger than that !

LOL

dunx

 

take it you have a fmic then dunx?! dont really want to go down that route only aiming for 320 ish. thats if i can find anyone willing to share knowledge of power fc!

 

I'd say you'd need a front mount for 320bhp

AndyForrestPerformance

 

you dont need a front mount for 320bhp. decent late spec top mount will be fine.

 

do they fit ok?from what version?

 

if you look for the sti3 it says this as well so proves sti3 intercooler ok for good power or as text says v7. text borrowed from andy forrest web site.
Level 2 310-330 bhp

Full Decat or Sportscat exhaust from turbo back 2.5 or 3” bore
Walbro 255 l/hr uprated fuel pump
Apexi panel filter with resonator delete
Fuel Lab turbo specification fuel pressure regulator with fitting kit & gauge
Standalone Apexi Power FC Fully Mapable ECU with 4 x Boost/Power settings in-car adjustable
NGK PFR 7B uprated spark plugs


Level 3 370-400 bhp

Full Decat turbo back 3” bore exhaust system.
Tubular exhaust headers and flow matched uppipe
Walbro 255 l/hr uprated fuel pump
Fuel Lab turbo specification fuel pressure regulator with fitting kit & gauge
High Flow multi spray fuel injectors 550cc (440cc std)
STI V7/8 TMIC & matching undertray
0r
Front mount intercooler
AFP 05-20G custom ported turbocharger
Apexi Induction System
Standalone Apexi Power FC Fully Mappable ECU with 4 x Boost/Power settings in-car adjustable
NGK PFR 7B uprated spark plugs

 

Running an ACT guage on an STi3 Wagon with O/E turbo, injectors, topmount and ECU and 335 bhp my ACTs were off the scale of the guage in a sprint from 0-100 mph even after taking care to get the starting ACT as low as possible.
The scale went to 69.9C.
93-96 Impreza WRX and STi probably need a FMIC by 280 bhp.
97-98 by 300 bhp and 99-00 certainly by 320 bhp.
It is because Subaru recognised the deficiencies of the TMIC and its location that it was redesigned and improved through the model changes right up to the present day.

 

i experianced just how bad my top mount was this weekend at pod after sitting in traffic waiting the car hardly wanted to get up the strip felt very sluggish and poor. am i right in saying the sti does retard the timing lots when the intake temps are high? i was hoping for 12.5 and got a 13.4 worse then when i first had the car and she was standard did a 13.2. cheers max

 

This is exactly the problem with top mounts and the reason why rally cars are fitted with TMIC water spray so that charge temperatures could be lowered on the start off the line at the beginning of a stage but it is not a complete cure and far from ideal and top mount ACTs regularly exceed 100c. on competition cars.
Yes the engine retards the ignition in an attempt to protect the engine but also the hot charge is considerably less dense so the engine cannot make power.

 

That's a MY96 v.2 STi TMIC. It differs from the regular WRX MY93-96 one in that the end feed tank is slightly bigger, but more importantly, the STi one has a smooth metal/silicone inlet feedpipe which allegedly is upto 50% less restrictive than the WRX's nasty rubber/plastic fluted one.

Saying all that, you'd be lucky to get 300bhp out of the v.2 STi one... As harvey says, the ACT's go through the roof when at high loads/rpm for any length of time. Not good - and to be avoided as much as possible.

 

FWIW any 93-96 car with OE top mount is struggling by 280 bhp even with the core in good condition, properly aligned under bonnet skirt etc.. The STi 3/4 is an improvement but over 300 bhp and it need changing if you are going to drive hard and just a little more than that for the STi 5/6 and certainly wants replacing, preferably with an FMIC by 320 bhp. All these figures are derived from measuring ACTs with dedicated guages over quite a long period of time ie. several years on numerous installations.
The STi 7 is a big improvement and I would not be concerned about the TMIC until around 350 bhp but it is obvious Subaru identified one of the achilles heels of the marque as the TMIC has undergone gradual evolution and upgrade right through to the latest model and WRC cars did not run TMICs.

 

Yeah, that's exactly what Paul @ ZEN says (plus JGM, etc, etc...)... and my car's testament to that (one of many, obviously) - see here:-



STi v.2 TMIC; 380s; TD05 T.E. held at 1.3bar, tailing to 1.1bar.