Bracket Racing - Jet Rich or Lean? The DA at my track will swing from 1000'@10am - 2400'@3pm all this info came from Altronics web page.
I have an electronic weather station, I rarely make changes to jetting or timing. It has been pretty actuate most ofvthe time......but there are times where even with no changed i get an et off the line. I stopped pulling what the station called these bad passes and my station seems more reflective to real life........if you only put optimal runs in you wint get a true real life average
I run cooler or warmer based on weather changes....also adjust fuel pressure rather re-jetting (lazy) and if air getting worse shift higher as I normally don't shift at max hp..... ….don't have a fancy ET predictor but I do watch the weather.....
I jet rich and let the weather station predict the changes. However,with E85 the changes are minimized.
Had an app on my phone that predicted the ET based on past data entered and weather conditions from the nearest airport. After 6 months it quit working and the developer stopped responding to request.
I rarely change jets at the track and never have during eliminations. My car seems to be the opposite of everybody else. My first run is ALWAYS the best run of the day, then it slows down .02 . Others want to throw the first run away since their cars get quicker. I don’t have a weather station, or any fancy equipment. But I sure enjoy bracket racing!