Got a 414 si ,thing is it seams to idol slightly fast and drinks gas
like i drink beer, the dude @ the tuning place says it will probs be an injector sencsor, but wants 55 quid to find out,
Just cant bring my self to pay that monny for some monky to conect 4 wires to my plug leads & stick a hose to my exaust
any ideas ?

It also slightly rises in idol speed for about a 5 seconds when ever it feels like it