dizwiz24

Hi,

I have a 93 lt1, p600b w/ 11psi stock bottom end, hot cam / ported stock heads / LT headers, 50/50 meth injection, 60 lb injectors, racetronix walbro 255 l/hr pump. AS&M monoblade TB.

I try to keep my AFR around 11.0 to 11.5:1. I do have a wideband hooked to my drivers side exhaust bank (most likely to go lean from what I understand).

My boost curve hits like this:
3000 RPM: 5 psi
4000 RPM: 7.5 psi
5000 RPM: 10 psi
6000 RPM :12 psi (though I will only hit this in cold weather, I set my rev limited around 5600 rpm top prevent reaching this in hot weather)

My WOT spark advance goes like this:
2800: 31 degrees
3200: 31 degrees
3600: 27 degrees
4000: 23 degress
4500: 21 degrees
5000: 20 degrees
5500: 20 degrees

Im using tunerpro RT to tune and have spark advance going from 30 degrees (at 3000 RPM) down to 20 degrees at 4800 RPM.

This worked well in 95F friday on a heat soaked engine. Datalogs did not indicate any knock or any timing being pulled due to heat (note I have relocated my air inlet temp sensor to an ambient air source vs. the blower discharge pipe.)

Should I chance it and add a couple more degrees of timing? Or am I kind of pushing it?

onefastmx5

that timing looks decent, don' t get too aggressive on the timing with the stock bottom end.