My friend board computer worked fine, but we needed to replace kilometer counter. So we disconnected dashboard and replace speed gauge. Then we put it back to car and only light on board computer is working. but no numbers. Speed gauge an RPM gauge is working fine.
Car is 440 turbo 94

A 2° increase in ignition advance by itself usually won't account for an 18 hp gain on a naturally aspirated 2.4L engine. On most engines, that kind of change might be worth a few horsepower if the factory tune is conservative and the engine can tolerate the extra timing without knock. I'd be ...

Looking to install an aftermarket Sony radio into 1998 Volvo s70. The wiring harness was simple to get, but the mounting bracket is proving more challenging.

Any suggestions on brand/model no