I've got a version 4 type-r with a td05-20g that has apparently been mapped by andy forest to a "safe" 340bhp approx at 1.2 bar.

I've fitted an avc-r to it now and will be getting it mapped and was wondering if 1.2 bar is too conservative or can I eek some more out of it.

Car has unknown pistons, injectors and clutch so take it as they're standard, power fc, walbro, standard tmic, fpr, equal length headers & full decat 3" exhaust

anybody else running similar setups?

Thanks

 

You should be ok for some more, but watch out for gearbox.

 

I've never launched it / full bore off the mark and I'm generally mechanically sympathetic to my cars so hopefully gearbox won't give up the ghost

 

What's the standard clutch good for?

 

c.350 lb ft - depending on age/wear/abuse thus far.

 

The standard rods wont take more than 1.65 bar, the pistons are pretty good and will handle this.

Banny

 

So 1.4 - 1.5 is do-able then guys?
Thanks for the replies

 

What about the tmic? will that sort of boost be too much?

 

Headgaskets? Head-bolts?

 

Dunno really, so I'll say they're standard.

 

I think I would be changing the TMIC if your going to be running more boost.

 

To an aftermarket tmic or a sti 8 unit?
Don't really wanna go fmic as it's quite laggy as it is

 

Your better off with a smaller turbo and a fmic, power wise, I would not go much further than your 340bhp, these cars have been known to let go at less power than this, the rods are the weakest point in the engine and yours are the same as the ones in every turbocharged 2ltr impreza of that year.
The 20g is a horrid turbo for your car, go for drivability, upgrade the brakes, suspension etc and have a nicer car to drive

Tony

 

Sadly the days of spunking all my cash on cars has all but gone, so new turbo and fmic are out of the question, prob just stick with what I got then, boooooo

 

Swapping the 20g for an 18g and a newage tmic would be the way I would go.

 

I ran a 20g on a 2.0 STI engine for 20k @ 1.6 bar (circa 380bhp), sold car to Paul and Liz @ Zen the 20g was replaced later with a VF34 (made circa 360bhp on that) iirc and car now lives with another member on here and as far as I know is still going strong.

Story goes, treat them with respect and service regularly and they will last fine.

 

Was that Liz's black one? She still got that - or just her Fiat now?

 

That's the one, was sold to a family member

 

Hmmmm.....
was u running standard tmic, injectors, clutch, head gasket etc?

 

Nope, 550 cc injectors, AP clutch, front mount. Head gaskets were standard, there are no issues running standard gaskets at that level.

 

What sort of mileage did the 2.0l STi engine have?

 

Total of 30k on a standard rebuild when I sold it.

And whilst I am at it my wagon I recently sold had a 60k STI engine when I got it, I was running this @ 1.5bar with a MD304 then a RCM 400 ! Engine happily put 18k on at that level and had never been opened !

Too many scare stories on here and I don't usually bother replying but I have actual experience and don't just regurgitate hearsay. (That is no dig at any individual, just fact)

Clive

 

Ye true stories mate. There is too much politics!!! How far did you rev on the standard 2.0l running those setups?

 

8200

Here is the stunning black STI btw https://www.scoobynet.com/album.php?albumid=141

 

Nice stuff.

 

Yes, had the privilege of a passenger ride in that when I was picked up from Wellingborough station, for when collecting my previous WRX after its rebuild.

That black car flew.

 

Thanks for all the info guys
what's the general opinion on what my setup (see 1st post) is capable of boost wise?

 

As Banny mentioned 1.65b seems the safest limit.