Hi all,
I want to know what you've done to improve your engine that be upgrades (Air filter ect) or things such and changing fuel or have an engine clean?
On my 104k Audi A4 b5 1.9TDi I have changed from Esso fuel and sometimes supermarket fuel to Shell V+ about 7 months ago, what a difference now! I Don't use anything different now, also had a carbon clean which helped dramatically also.