I wanted to see where my a/f ratio was at, so I went over to Speedworks in Lewisville for their dyno day. That will be the last time I go over there because they're a bunch of morons. The guy dynoing the car tells me that I have a 6,000 RPM stall torque converter because it flashed to 6k when he nailed it in 3rd gear at 5,500 RPM! <img border="0" title="" alt="[Roll Eyes]" src="images/icons/rolleyes.gif" /> I just laughed. The morons were also stumped as to how to lock up a converter with their "scantool". They've done it before, but apparently everyone forgot today. He tried, but it never did lock up. I just shook my head and was glad that I got a wideband O2 reading.

My a/f ratio was 12.5:1 throughout the entire run. With this ratio, my O2's read in the .920-.930 range. I seem to gain another .5 degrees of timing on the dyno vs. the track. It showed 26 degrees on the two runs that I ran ATap. After talking with a few other guys and seeing what's working best for them on a wideband with LS1 Edit, I think I'm going to keep the 12.5:1 a/f ratio. The car is definitely making nice power where it's at for stock heads! 361 RWHP unlocked and 380 RWHP locked

<small>[ May 04, 2002, 05:24 PM: Message edited by: Trevor D ]</small>

 

I'm not sure that is going to work exactly as planned, but I have set up a dyno test pcm for when I finally go (hail storm cancelled my last visit). The test PCM 2-3 & 3-2 shift points are set to keep the car in 3rd gear starting at 40 mph and lock the converter at 75 mph. Hopefully this will allow me to get a good A/F reading from about 4000 rpm on up.

 

Yeah, that would be nice to have the wideband reading lower down in the RPM range. With the ignorance of those yahoos, I just wanted my car to get unstrapped from the dyno in one piece. LOL!