i have an 04 l322 4.4 v8 it cost me over 2200 to get a top of the range prins fitted , i got my money back in 6 months and i dont have any faults ,hears my advice .go to prins direct and get them to do it ,it safer that way , i got a fat ****er in bletchly to fit it for me as he had a great name , hes a shower of **** and ripped me of , not only did he fit a small cheep tank he screwed in the presure cut of valve right in so i could get more gas in and wouldnt notice ,he also adjusted the ecu so the car would run leaner and burn my valves out ,so he wouls get the business in replacing them ,he a big fat cu*t and when i complained he took me in the office whare he had a big black base ball bat on his desk and told me he never gives money back ,well i am a machanic .ive worked on cars for my living most my life .im also 6ft4 and i never get ripped of , i can tell you i made that useless sack of sh*t pay another company put in a good tank and sort out all the problems the ****er did .ide still like to know how he can sit down with a base ball bat wedged up his ass . :nopics:if you cant buy prins go to a company called micromise in luton .they are fantastic ,maybe even better than prins and they know there stuff ,they right there own software and have developed there own injectors which are amazing ,they sorted me out in no time and retuned my car back to how it should be ,it went like a rocket after .