I did a lq9 swap into my 95 and for the life of me cannot get my tach to read right. I have pcm hooked up which makes it read about half. I have tried the 1k ohm resistor and a 690 ohm resistor neither of them fix the problem. No one else has any ideas I have read every TACH thread on here. And called psi who did my harness they only tell me to use a resistor. Can you help ?