Wow, the guys on the triumph list know things we don't !
Check it out:
Subject: Re: TR5/TR6 PI induction
> I received zero responses from my previous question on P.I.???
> That's Petrol Injection to the British, same as Fuel Injection
> in the U.S. except if you want to convert it, you need Lucas 123456,
> the Petrol to Fuel conversion kit, otherwise you have to run all
> the gas through the Fuel to Petrol convertor 1st, its a real pain.
Maybe that's why my engine won't idle the way it should...