advanced ignition timing

[NSPYRE]

hey guys, got a bit of a noob question. after installing headers, hi-flo cat (2.25") and exhaust (2.25") and using 98 octane fuel, is it true you should advance the ignition timing? if so, by how much?

[bigjo5]

no u shouldnt have to, but ppl tend to do it cause they think it goes faster doin it but i dont think it does... this topic has been recovered b4. i think depending on ur car then u just adjust it by a couple degree but here a link hope it helps :thumbsup:
http://www.ozhonda.com/forum/showthread.php?t=46857&highlight=advance+timing

[iamhappy46]

Yes, to get the most energy released from 98RON fuel you should have the base ignition timing advanced.

[saxman]

you may benefit from advancing the timing, more so from the higher octane gas than from the mods, but doing so arbitrarily isn't necessarily the best idea.