Engine leans out just off idle. It causes an enormous flat spot or a lot of coughing and spluttering. Engine is 4G62 w/ front mount intercooler/ small 16G TD05. Tried new coil, swapped Dist, swapped ECU, boost sensor, Knock box E101, swapped airflow meter, had injectors cleaned and flowed. Checked fuel pressure,new leads and plugs, TPS, idle control motor, checked ign timing and cam timing.

So timing is correct? and the injectors are flowing correct? how much boost are you running? and what is your vacuum at idle?

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"hahhahahhaa its good its got straw for a pipe frontn.... the bigger that hole gets the more money falls out of ur wallet... "



Epic i must say.

18 PSI boost / 20 inch vacuum
This is happening off boost on light throttle also.

check the error codes

18 psi is pushing the limits of the stock system so if your getting the issue at light throttle i'm supprised its not returning later at full boost

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