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Can anyone give me max bhp figures on K04 turbos, standard or modified with all other engine mods (intercoolers etc).

I have heard that standard turbos are good up to 490bhp and some conversions up to 580bhp....

Anyone know different or can confirm?

Regards,

R.

Rich, you can probably get 1000bhp out of them (for just a few minutes), so the answer depends on how reliable you want your car to be (bearing in mind the cost of replacing those puppies!)

My car is running Standard K04's and makes 500bhp, they have been on the car nearly 3 years now and done about 17k. still running better than ever

500hp must be on the outer limits of the K04. Depends how often you like to be giving it full boost.

As much as possible, LOL. Car does about 6k a year. think the water injection helps lots...

Didn't aim for 500bhp was after 400bhp, but after fitting the brand new engine and a large box of custom bits, MRC set it up. The car ended up here 501bhp

And these are standard k04's?

What other mods to induction side, it looks like you have a very large FMIC - which water injection are you using?

R.

this is the intake system that my car is running
http://www.sdr-research.com/x1/intake.htm but running the biggest ITG cone filter with it.
car is runnig a RS4 MAF too
the water injection kit is the Aquamist 2D kit.

BRETTCOLLINS wrote:this is the intake system that my car is running
http://www.sdr-research.com/x1/intake.htm but running the biggest ITG cone filter with it.
car is runnig a RS4 MAF too
the water injection kit is the Aquamist 2D kit.

I have the same but with 630cc injectors with upgraded fuel pump, Aquamist running 50 /50 meth - but was getting nothing like that (467bhp @ 6500rpm - could be the FMIC that makes the differance.

I now have hybrids, tubular manifolds as well, lets hope I see the right side of 500bhp when its tuned or the dummy is being spat out...

Thanks fo the info guys.

R.

Mine is running Hybrid K04s, Ported and polished head, cast exhaust manifold, full milltek with 100cel cats & FMIC and it makes 528BHP according to the paperwork I have. This is an MTM conversion. Gives you an idea.

Chubby wrote:

BRETTCOLLINS wrote:this is the intake system that my car is running
http://www.sdr-research.com/x1/intake.htm but running the biggest ITG cone filter with it.
car is runnig a RS4 MAF too
the water injection kit is the Aquamist 2D kit.

I have the same but with 630cc injectors with upgraded fuel pump, Aquamist running 50 /50 meth - but was getting nothing like that (467bhp @ 6500rpm - could be the FMIC that makes the differance.

I now have hybrids, tubular manifolds as well, lets hope I see the right side of 500bhp when its tuned or the dummy is being spat out...

Thanks fo the info guys.

R.

my car also has Custom compression dropping Headgaskets (8.2:1 CR) and the exhaust is custom made from turbo's back.

Mine has lower compression as well.

Mine has hybrid KO4's, no engine work except ceramic coated stock RS4 exhaust manifolds, it also has MRC FMIC, larger injectors running on a miltek exhaust and downpipes with no cats. I am running around 550bhp

viperbl wrote:Mine has hybrid KO4's, no engine work except ceramic coated stock RS4 exhaust manifolds, it also has MRC FMIC, larger injectors running on a miltek exhaust and downpipes with no cats. I am running around 550bhp

someone said the RS4 manifolds are the same as the S4 ones, is this true?

Darren

S4 wrote:

viperbl wrote:Mine has hybrid KO4's, no engine work except ceramic coated stock RS4 exhaust manifolds, it also has MRC FMIC, larger injectors running on a miltek exhaust and downpipes with no cats. I am running around 550bhp

someone said the RS4 manifolds are the same as the S4 ones, is this true?

Darren

Yes they are.