no1nutter

iTrader: (1)

what does this mean and will it have knocked my ecu back?

ian10

at a guess idle control valve on top of inlet manifold dose as the name sugests, may just need cleaning

rmsturbod

Hi mate hold on it could be either Idle Switch or Circuit.. Get good advice

no1nutter

iTrader: (1)

would this b likely to roll ecu back? recently had sum mapping work done and was running 16psi of boost, jsut had it on rr yesterday with 4 of my m8s cars and only ran 13.5psi of boost, was smoky, sent the co volumes off the scale and operater said car felt very unhappy, also over 5 runs made bhp figures ranging from 240 to 296, something is a miss!

rmsturbod

i would get it set up properly and i would lower the boost are you using power commander if not i would advise it

no1nutter

iTrader: (1)

had the mapping done by scoobyclinic so everything should of been set up correctly BUT???

rmsturbod

Doesnt sound it if you have lost boost have you got an air leak...

no1nutter

iTrader: (1)

not as far as i am aware, what would be best way 2 check 4 1?

or would a dirty air filter have similar effect?

rmsturbod

well you would loss boost if you had an air leak and you could hear air leaking like a punctured tyre if you get me you might have a faulty boost valve..