my buddy had his TT conversion done at Z1, and they used his n/a fuel pump and fuel pump controller.... all you hear in my friends car is BUZZZ ZZZ ZZZZ Z... he was told by Z1 that there was no problem doing this and all will be o.k. Me on the other had think he is overloading his fuel pump and eventually will fail... what do you think is the proper set-up should be.... i want to get his car running right