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What is about the max power that can be got out of an RS4 on standard injectors and fuel pump?

Thanks

I say round 500bhp +-20bhp... All depends on a lot of stuf...
Best regards

Depends on what heads, S4 heads your looking at 400bhp, but rs4 are closer to 500bhp IIRC.

Harper--D wrote:Depends on what heads, S4 heads your looking at 400bhp, but rs4 are closer to 500bhp IIRC.

This is specific to RS4 type heads and inlet manilfold

on rs4 heads and inlet manifold around the 500bhp as harper-d says on s4 lower due to spray pattern

MarkB wrote:

Harper--D wrote:Depends on what heads, S4 heads your looking at 400bhp, but rs4 are closer to 500bhp IIRC.

This is specific to RS4 type heads and inlet manilfold

That is why i said depends on the heads to start with.

Do the RS4 heads allow you to run much more aggressive timing?

I'm interested to know what makes the RS4 more powerful that the S4 using the same injectors and fuel pump, as Doug had mentioned in another thread referring to the difference between RS4 and S4 engines that

Doug_S2 wrote:internals are different but only stronger - nothing will give better performance.

Blue_Thunder wrote:Do the RS4 heads allow you to run much more aggressive timing?

I'm interested to know what makes the RS4 more powerful that the S4 using the same injectors and fuel pump, as Doug had mentioned in another thread referring to the difference between RS4 and S4 engines that

Doug_S2 wrote:internals are different but only stronger - nothing will give better performance.

It's the heads, cams and inlet that makes all the difference. These push the power further up the rev range, probably due to them being larger so aren't so efficient at lower rpm.

Thats what makes 90 odd bhp?!

+ the K04s of course

R33V-Spec wrote:Thats what makes 90 odd bhp?!

It's what puts a K04 RS4 about 50bhp ahead of a K04 S4 when the rest of the exhaust, downpipes and intercoolers etc are the same. All in the heads, cams and inlet, IMO

Ok fair enough