[runner4053]

Originally Posted by venik

between .5 and 1v at idle, 4.5-5volts at full throttle



my car is in low load while cruising, but most of my low load adjustments are at 0%, one or two points are at +-1%

disconnecting the o2 sensors means your hi/mid/low trims won't change, I.E. mine are all at 100 atm. And I'm 90% sure that one o2 sensor is just for datalogging and troubleshooting, and the other is what the ecu sees, if you think about it the ecu would have to do twice as much calculating with 2 inputs (while they are reading almost exactly the same reading which makes that counter productive), so it makes sense. Plus I've read it here on the boards.

I remember bob saying that VE tables should be left alone unless you know what you're doing. But that gives me some confidence in this f/c now...I think I could def perfect my tune in the next few days, only thing is its a bummer I need the laptop to mess with it. I especially like the new engine braking (?right?) variable in 5.03.

Okay. Well I think it's much easier to tune via VE table. I haven't touched this stuff in a year, but if you use that feature that tracks where you are in the VE table while playing a log, it's actually pretty easy. I used to try using the +- settings and couldn't brake out of the 13s in the quarter. I restarted with the VE table and pulled a 12.03 on a 100 degree day on pump gas with a lightly modded car at the time. That convinced me that VE is the way to tune.

So this 02 sensor thing...how do you stop the ECU from throwing a code? I'm really interested now. I've always had a hard time with my tune wandering.