hi i own a vr lexcen and 4 a while it felt like every now and then it was getting held bak and didnt like reving over 3 grand turning it of and on semmed to fix it for about 20 mins and when i got low on fuel it sounded like crap that has eventually gotten worse and now it wont start straight away and cant put your foot down even half way and cant go under quater of a tank plz help???
I'd try changing the fuel filter first...maybe starving for fuel. You may also have some water in you fuel blocking the intank filter on the pickup tube. But worry about that later - do the external filter first.
Other possible is a blocked air filter. Also try a codes test (see how-to section) Good Luck.