My kind of thread!

Someone mentioned the M3 being faster.... mine eats them for breakfast and goes back for 2nds (e46, e36 isnt worth even bothering with!)

Why is it as soon as S4/RS4's get mentioned, the same old sentence crops up: "You've got to remove the engine!"

Well, yes, if you want to/need to replace/upgrade the turbos then yes you do have to pull the engine. BUT, its not exactly something you do every day is it? How often do you replace your turbo on a Ford RS? Not that often!

Their biggest weakness is if they are still running the original factory K03's with high mileage (140k+) and there have been (or still are) boost leaks.
This causes the turbos to over work to compensate and eventually kills them.
Ideal time to stick some K04's on!

A few figures (all approx):
Stock S4: 265bhp
Generic remap: 330bhp
Custom remap/Exhaust: 350bhp

Then you have reached the limit for the K03's, put on some K04's and revelant mods (exhaust/filter/fuel pump/injectors/intercoolers - most of which can be standard RS4 spec) and you are looking at 420-450bhp depending on mods.
Start adding other bits like water injection/FMIC etc and you can clear 500bhp RELIABLY on stock internals and heads!

Mine is currently running 482bhp last time it was on the rollers in Decemeber, I just need to get the map tweeked and it will clear 500 no problem. I drive it everyday and it is no less reliable or driveable than any other car. So far, nothing I have come across on the road has caused any concern!

A few pics I took on Monday...














And one from Decemeber