Using a tweecer, I left the stock tables alone until I hit 2500 RPMs. Then my A/F went to 13.0 until 6000 RPM. I shifted at 5600 anyway as I was stock headed.
The tweecer allows you to maintain stock characteristics then really let it fly when you got WOT. In your shoes I would shoot for 13.0 and have 36 to 38 degrees timing in by 2500 RPM.
Using a tweecer, I left the stock tables alone until I hit 2500 RPMs. Then my A/F went to 13.0 until 6000 RPM. I shifted at 5600 anyway as I was stock headed...
The two upper rows right?
The tweecer allows you to maintain stock characteristics then really let it fly when you got WOT. In your shoes I would shoot for 13.0 and have 36 to 38 degrees timing in by 2500 RPM.
That is really what makes the TwEECer shine being able to adjust only the area you want adjusted.
Oh by the way, I have mine at about 12.6:1 with 32* timing confirmed with WB and TwEECer. I plan to up the timing but my laptop got all kinds of worms and just shut my system down. So now I am waiting for my XP OS to come in so I can upgrade and wipe the system clean. Luckily, I saved my tunes, plus wrote them down. Hell, I haven't been able to run my N20 yet because my laptop is on a break. However, I plan to hit the track before the season is over though.
You have to remember that you'll never really be "done" with a twEECer tune... at least I wasn't. I was still fiddling with it a week before I sold my car. I just couldn't resist....
I made my best power with my old AFR165/FTI cam/Edelbrock intake/stock shortblock with my AF at 12.7:1. Also remember than in an NA car, more timing isn't always better. In a power adder car you will make the most power right before it detonates, in an NA car you can usually go past the best max timing value before you hit detonating. The only way to tell is to find a way of measuring the cars acceleration with different total timing values. This can be done with datalogging if you do it under like conditions in the same place, a dyno, or at the track.
I have longtube headers, the WB will go right after the collector around the 3 oclock position I believe. No cats.
I guess I will play with 12.5 to 13 and datalog and see what happens