Originally Posted by B15NEOVVL 
Personally, I would never do something like this. Running 23* base timing with 87 octane fuel in the warm environment that California brings...seems like a recipe for disaster. Maybe some top dog tuner will chime in with contradictory evidence but until that happens, I say it's a bad idea. In my eyes, what you are thinking about doing, is similar to tuning on the edge. Most tuners will not push the absolute max timing in each cell as you want room for changes in temperature, variations in fuel quality, etc.. You should always leave a margin for error and otherwise. Maybe you can get away with it, even for a short period of time, but if it is at the expense of your pistons (ringlands) and piston rings, is it worth saving a buck or two in gas? Maybe you can have one less cup of coffee a week to make up for the difference?
Also, how are you measuring the "pinging"? At idle? It is usually easiest to hear at idle and while under low load condititions? Now, throw a loud VE into the mix, with (probably) a loud straight-through muffler and I'm betting if there was pinging happening under load, you would NOT be able to hear it. How do your plugs look right now?
If you are going to go ahead with the experiment, humour me and do a compression test now, and then after a month or two of running with the 23*/87 AKI combination.
Good luck either way!
Lol my exhaust is extremely quiet.. It's nearly equivalent to stock with all the bs crush bends and 1.75" flange lol I've had it on the dyno with the hood popped listening for pinging all the way to 26 degrees from the tuners ears and my own as well and nothing. wasn't planning on keeping 23 timing with it lol was going to go to 17 or so lol but i guess i'll just stick with premium and drive my p11
Originally Posted by BlueRB240 He needs to save that 2.48 on every fill up. I'm assuming he wasn't going to try and race people with 87 pump gas on a some what high compression motor. I'm sure he knows the sound of pinging too..... or I hope he knows what it sounds like before he kills his motor lol.
LOL well I do a lot of long distance freeway driving so I'm just staying at 3k, wasn't planning on racing anybody running it but just for bullshitting around town without hitting VVL.
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