Just took my car out for a spin and the rev counter did not work,when its on tick over it sits on 900 rpm fine, But when i take it throught the gears it wont go more than 3000 rmp, When im on the motor way sitting at 70 mph its only at 2000 rpm,I dont know what car the pcb i found was out off, all i know it was a mk4 one,what pcb do you think i should try in it next m8?