[Kroze]

I got this Snap-On timing light that have a digital LED screen) (you can change the numbers from 0 to 200). I was told that to change the timing, you set the LED numbers to 10 (on our supra) and set the timing on the car until it reads 0 (on the car)

Is this the right way to do it?

or is it that you set the LED readout to 0 and change the timing on the car until it reads 10 on the car?

 

[Racefiend]

You can do it either way.

 

[stonedworm]

What is the proper timing on our cars? I've read both 10 and 12... I timed mine to 12 after doing the timing belt and its running perfect...

 

[Ckanderson]

10

 

[Racefiend]

I gained a whopping 2hp by going from 10 to 12. Run 10, less chance of knock.

 

[90_mkIII_7m]

it says in the service manual, that when you bridge the two connections in the diagnosis connector, the two that you bridge to check for codes, you should have a timing of 10 btdc. without that wire, it should be 12 btdc. i just did mine 5 mines ago . i just finished my rebuild, and it was set at about 4 btdc...