Igintion timing

[XLR8928]

I was thinking of advancing my ignition timing on my '80 928, from the factory setting of 23deg BTDC @ 3000 rpm, to around 26deg. Avancing the timing on my detriot iron always netted a few ponies, however, I was'nt sure if it would adversely affect my injection timing etc. Any sage advice, or recomendations?

thanks,
Kerry

[Danglerb]

If you have a US 80, its made to run on cheap gas, so you should be able to switch to premium and bump the timing up a bit. What you want to avoid is knock and/or ping. Before making any changes its a good idea to make sure the vacuum advance etc is all working properly.

[DPW928]

What Danglerb said plus watch your temps since advancing the timing can cause an increase.

[123quattro]

If you run good gas you can safely advance a couple degrees. It will make the car harder to start though.

[XLR8928]

Thanks for the tips. I advanced the timing to 28deg this weekend, and the power boost is great (Feells like 10-15 hp). 89 octane seems to be working OK.
-Kerry