[MustangSparks]

i have heard of people doing timing advance to 14 -15 i wanted to know what everyone thinks of doing this and also how do you do this ?

[TENGRAM]

Originally Posted by MustangSparks i have heard of people doing timing advance to 14 -15 i wanted to know what everyone thinks of doing this and also how do you do this ?

go for it. i run 18* advance with 91 octane. here's a "how-to" article: http://www.my5oh.com/forum/viewtopic.php?t=2292 , start about half-way down where it says "Initial Timing Calibration"

[Bullitt95]

Remember that the amount of timing advance that you can use without getting detonation will be determined to a large extent by the ambient temp./humidity and the fuel octane used.
On a cold damp winter day with premium fuel, you could advance the timing quite a bit. On a hot dry summer day with 87 octane, the engine might ping even with the stock 10 degree advance.