wassup! what is a code 10 then 4. I have one long flash then a pause then 4 small flashes from the a/t unit. What error code is that. just bought a 90 ex coupe, already put dc sports k&n intake, altezza tail, clear corners, and clear bumper, and I am looking to get a high flow straight cat but I hear negative things like it is too loud and I hat that high pitch sound