Best ECU/TCU tunes???

[DHall1]

I think you have done the proper amount of leg work to give a real world answer.

At the lower O2 voltages.... .80v and below you would get the bucking feeling and extreme high EGT values. But by simply altering your fuel table values and running O2 volgages at or near .85v those bucks went away and EGT dropped right down. It seems to me these O2 sensors do a very good job of delivering an accurate reading.

Only way to get the real wide band O2 reading is to place a bung just after the turbo. Kinda hard to do with our cars. Having the sensor in the tail pipe tip ok but not the best spot.

So.....to muck this up, I've now logged two Revo cars, one in the .80 range (me), other in the ideal .85 range. I've dyno'd at a perfect 12.5:1 afr under 16psi on wideband.

My point being, a few experienced tuners I've talked with have said our o2/lambdas are minimally accurate, as anything above .5 is rich. Sounds like ghost hunting almost?

So, tune by egt's right, certainly will let you know if you're cooking the engine. If i stay under 900c all is good!

[lswing]

I think you have done the proper amount of leg work to give a real world answer.

At the lower O2 voltages.... .80v and below you would get the bucking feeling and extreme high EGT values. But by simply altering your fuel table values and running O2 volgages at or near .85v those bucks went away and EGT dropped right down. It seems to me these O2 sensors do a very good job of delivering an accurate reading.

Only way to get the real wide band O2 reading is to place a bung just after the turbo. Kinda hard to do with our cars. Having the sensor in the tail pipe tip ok but not the best spot.

Constantly trying to make it right...

I agree I've seen the o2's react within a .5 range or less resulting in a better tune...

But....guys say above ~.5 could be ok....granted it seems lower o2=higher egt...= me dumping more fuel in!