escort gti spark plugs help

[spi escort gti]

Hi i have a escort gti mk6 the silver top engine now my car is running 146 bhp

now im abit botherd of what spark plug to use at the moment im useing the iridium plugs and my car has bean super chipt kent cams pullies

i had all this done in 1 go then it got set up on the dynoe with theses iridium plugs in

now my question is how many miles do you get out of theses plugs ass theses plugs have bean in now for about 8 month and iv done alot off millage on theses plugs and ass im useing car now seems to be useing alot more petrole than it did 5 month ago

is ther any plugs better that will give me better fuel mpg

so my question is what is the best plug i can use for my engine

thanx alot and hope some of you gies can help thanx ste

[spi escort gti]

can anyone help thanx

[Zad]

I don't know if there is any relevance to your engine, but Ford platinum tipped plugs are specified to last 50,000 miles. As for fuel consumption, it might be worth getting someone to check the oxygen sensor on the catalyst. Might the verniers have slipped and be causing a performance hit and thus a heavier right foot?

[Jon GT2]

Use the Ford plugs is my advice they were specifically designed for those engines due to plug problems and in general most tuners i have spoken too always reccomend them.