Re: ITB Conversion on sixteen valve 4AGE On my inventory bigport AW11 a leaking exhaust manifold gasket prompted the O2 sensor to examine lean and it pumped gasoline in the motor. Fuel overall economy plummeted until I sorted it out. 4a. I'd express that it is most likely wealthy at https://4ageforsale68998.ezblogz.com/66229844/4age-engine-for-sale-an-overview