what is the max people have tuned these engines to, any big bhp on standard engine?? and still running??

 

no one!!??

 

There is a guy in greece with the standard bottom end and tmic, running 480bhp!!!

 

do u know wat turbo? and how long hes been running?

 

and is there any link to this guy

 

talk to sumo power, its a hks i believe, they import his stuff. auto ergonomics or something similar

 

running 385bhp & 340lb/ft at the moment

 

on a TMIC, that I find hard to believe.

 

Believe i saw this mag feature as well, i'll try to dig it out later

 

The car is featured in japanese peformance magazine, he is using a hks turbo with an external wastegate.

 

On a 2004 STI8 UK with standard heads, bottom end, ecu(with EcuTek remap by Pat Herborn) we have made 457.0HP using Tesco99 and Millers CVL Turbo octane booster tested on a Dyno Dynamics rolling road! The car has done 3000miles of hard use using this setup and previously covered 4000miles at around 400HP! We are going to next try mapping it with Tesco99,CVL Turbo and 10% Methanol just to see what figure is acceivable! We expect upto 480HP!

 

You should read his opinion on front mounts............

 

deeeeeccceeeeeent. wat turbo?

 

full write up?

 

You can preview our new website which is still under construction at
www.webpuppy.co.uk/grd/

There should be a full write up on there within the next couple of days and it should be under the drop down `our cars`.

 

i will keep an eye on that.

 

It's not as simple as max BHP and still running IMO. It's the type of use you are going to subject the engine to. A few blasts on the road and the engine may well survive for a long time. Rag it on track and it may fail if running towards the 400bhp mark. I understand that the pistons and rods are the weak link. Mapping also plays it's part.

The engine that's pumping out 450 on std bottom end may be very well supported, mods wise and serviced extremely well. You could try it and it'll end up as an expensive mistake.

Subaru have tuned the engine to produce 265 bhp reliably enough to offer a 3 year warranty. Prodrive take it to 305bhp with the same warranty. Outside of this and it's stretching the envelope, the more you stretch it the more likely that something will break. There is no definitive safe limit as each car will be different.

I'm sure you could get 500+ with the right turbo for a short time, if that's what you mean by still running? Or are you deciding to push the STi8 to 400+ on a budget in the hope that because other have done it then there's no reason why your won't as well?

F