rover 220sdi tuning lead help

[rovermad]

Hey I have a rover 220 sdi and have just fitted a tuning lead so that I can turn up the fuel. But if I turn it above 3/4 of the way the car go's like s**t of a shovel, but as soon as I go past half throttle the car juders or cuts out like I was running out of fuel. Is this normal? Can I stop this in any way as go's well until I hit half throttle so it should go even better if I can give it full throttel

[E_T_V]

It sounds like fuel starvation.

I'd try changing the fuel filter and checking the fuel lines aren't blocked.

The extra fuel requested is showing up a fuel supply fault I think.

[rovermad]

Cool will try it. So I should be abell to turn it all the way up with out any problems then? As have never been abell to. But then god knows how many years the fuel fillter has been on there lol

[E_T_V]

I'm not sure on the other tuning leads but the old TU1 can be turned up fully without issue (other than an unstable idle speed).

[rovermad]

I do have to turn it right up to get a lumpy ideal but then if I give it some it will splutter like its running out of fuel so I will try changinging the fillter and see wat happens.

[E_T_V]

It does sound like fuel starvation to me