How do i know if my fuel pump has been adjusted?

Evening all,

I have just bought a 1998 300tdi defender with 73000 on the clock. Im chuffed to bits with it. It goes like s**t off a shovel, i had a 200tdi previously and it just doesnt compare power and speed wise. I know a 300tdi has a litttle more HP but the difference is more than a few HP in my opinion. The intercooler is standard, it still has egr(soon to be removed!), no silicone hoses. The only mod i can think of is that it doesnt have a cat, but as i understand some were built without cats. Today i got 0-60 in 14.4 seconds, and from looking around that is rare without any mods. The speed is great, but i am a bit concerned that the fuel pump may have been adjusted, and understand that adjusting the pump is not good for the engine in the long term. The other reason i think it may have been asjusted is becuase i only got 230 miles off a full tank, however 160 miles of this were on the motorway at 80 mph so that may have a bearing on it. So how will i know if its been adjusted? Or i am missing something that may have been moded? Any thoughts would be greatly appreciated.

Cheers Oli

are there any witness marks on the pump diaphram cover?

Ive got a 300tdi in my 90, think I get roughly 200miles out of my tank! Could be wrong but im sure it's something like that. And my fuel pumps turned up, didnt think it did much harm?

as batternburg said check the diaphram cover at the top of the pump , check your turbo as well if the actuator has been played with and the turbo kicks in all the time not only will it wear your turbo out quickly it will also play havock with the fuel situation as well but defo go for pump 1st

mark