Engine "Cleaners"

[zdebx]

your throttle body is under the round part with vw on it.

I've always wondered what is that?

[axewielder]

i take the TB right off for cleaning as 1, it dont take 5 mins to do + 2, the bit that really makes any difference when cleaning is the edges of the butterfly+ the area on the venturi where the butterfly closes against, the rest has minimal effect on performance but its nice to get it off+ if its nicely polished should stay cleaner for longer+ be easier to clean in the future
+ you can just use a bit of petrol, its what i use to clean carbs too+ dont anyone say 'ooo but its flamable' cos so is carb cleaner

[zdebx]

Bought some Texaco engine cleaner, and poured it into the tank today. Thrashed the car around, but doesn't seem to make any difference so far.

Also ordered carb cleaner, so will try to remove the throttle body and clean it some time. Will also replace the ECU relay (only £13 from VW), then see how it goes.

Should I replace the fuel pump relay as well? It's £24, so I'm not sure if it's worth?