Most power made on a standerd ko4

[Pesky jones]

I thought you were just staying clear Dan. I probably would if I could go back 

Interestingly, topic was brought up on the TFSI tuning page the other day

438bhp 500+ lbft of toqrue measured on Hurdys old stock ed30 engine with a 200 shot of NOS…

Also, some suggested the theoretical limit of the k04 was way under what it produced when tested. All or most of the top TFSI tuners/builders (in the UK atleast) believe 400 is possible from a k04 if the engine is flowing efficiently enough. They dont think the turbo or engine will last forever, but believe its possible.

All for theoretical limits and calculation, but when the tfsi pros have already been there done that, i'll take their word for it.

[Dan_FR]

I don't get on here much these days... Don't find a lot of time at all at the moment 

Problems with this are the variables....  aside from individual setups, mods etc. and the occasional freak of nature setup that just makes power for no known reason.....

Longeivity - push it hard, it'll go bang.

Engine compression - higher compression lumps like the BWA can make more power if you can contain the knock and likelihood of terminal piston/rod bending/melting and/or ejecting. Seen a Built (properly - Forged)BWA K04 be pushed to over 400hp after fiddling with knock control just to see what is possible. Meth or race fuel dependant....different ballgame

Air density (pressure/temperature/IC efficiency) and knock supression/quality of fuel play the next biggest factors in determining any peak value after you have reached the airflow ceiling. Race fuel and/or the help of N2O will surpass the 400hp mark by quite a margin, as measured in the way predominantly used in this country using coastdown measuring etc.

Measuring on a bench is a different ballgame and is just changing the goalposts to be honest. No aftermarket tuner bench tests these for numbers. Then again adding N2O and race fuel is also changing the goalposts.

My two pence 

[harveym3]

I was toying with running 75 bhp noz jets in my ko4 gti but how much extra stress would the put on the engine? 

[Shoduchi]

I don't get on here much these days... Don't find a lot of time at all at the moment 

Problems with this are the variables....  aside from individual setups, mods etc. and the occasional freak of nature setup that just makes power for no known reason.....

Longeivity - push it hard, it'll go bang.

Engine compression - higher compression lumps like the BWA can make more power if you can contain the knock and likelihood of terminal piston/rod bending/melting and/or ejecting. Seen a Built (properly - Forged)BWA K04 be pushed to over 400hp after fiddling with knock control just to see what is possible. Meth or race fuel dependant....different ballgame

Air density (pressure/temperature/IC efficiency) and knock supression/quality of fuel play the next biggest factors in determining any peak value after you have reached the airflow ceiling. Race fuel and/or the help of N2O will surpass the 400hp mark by quite a margin, as measured in the way predominantly used in this country using coastdown measuring etc.

Measuring on a bench is a different ballgame and is just changing the goalposts to be honest. No aftermarket tuner bench tests these for numbers. Then again adding N2O and race fuel is also changing the goalposts.

My two pence 

I think you meant the AXX engine, which has an higher CR.

[Pesky jones]

The k03 engines (AXX and BWA) both have higher CR then the k04 based engines, which I think the point was. Although AXX does have higher CR then BWA.

[Shoduchi]

The k03 engines (AXX and BWA) both have higher CR then the k04 based engines, which I think the point was. Although AXX does have higher CR then BWA.

Right! Thanks for the correction.