No CEL in first start up but always appears on second

[blastnpast]

you have IACV problems

ensure you do not have any vacuum leaks and that your cars isnt running to rich or lean at idle or near idle RPM's

I have checked for vaccume leaks b4 but I will check again, my car prob is running rich due to the b18 ecu on my b16 engine however I will be getting an ek4 ecu and connecting it up

Thanks in advance everyone

[ECU-MAN]

if your running B18C ECU on the B16 then expect it to idle funny

[blastnpast]

if your running B18C ECU on the B16 then expect it to idle funny

Thanks for this I am gonna install b16 ecu tonight fingers crossed

[ECU-MAN]

good luck

let us know how you get on with it.