i have a 91 se-r with a avenir swap, the car was running good until my clutch when out. i took off the tranny and unplugged my maf changed my clutch and put everything back on the way it was. the cars starts up but it idles and blake smoke comes out from the exhaust like the maf is messed up. i ground the maf to a ground on the body and still not running right. i switch the maf sensor and still the same. can any body help me