personally i like it heavy but it just feels un natural while your parking and its not too heavy i actually like the feel of it it nice....ohh and the switch on/off type is a cool easy way out of it hit the switch for parking, off when driving my wiring actually isnt finished there is a plug there that hooks up the air con ect... that still isn't hooked up i might leave the beast with grant to sort it out one day... man there have been many really cool ways of leaning the fuel off alittle but not to sour your efforts grab yourself an safc you wil not regret it i promise (look for a second hand one though paying 610 for a new one is a touch steep but it really is a great device....the wiring i pid a guy to fix up for me using the diags prolly simular to the one you got (we all share those diags but keep them close some arsehole workshops chrge you for em) i honestly think tha he done nothing to my car cheak with grant but all the plugs bar one all plug in i think you can just plug tha shit in and kick it over....i think this cause the only thing that remained disconected was the one that didn't fit keep me posted dood!!!!! buythe way did you run the line so you can boost it up before you dropped in the engine????