Astra Coupe Turbo 273bhp, but 25bhp less power with WI.

[Richard L]

I remembered you making a bar graph unit on your dash, nicely made unit. I wonder if you have solved the LM3914 overloading issue by reduing the drive current to the LEDS.

I think it will be useful for Mike to have one of those to monitor his lambda values as we start to modified his MAF signals. Care to share the circuit?

Richard

Originally Posted by PuntoRex

hmm....

As I see in my homebrewed O2 signal display, in the mid-high rpm range, the up-down voltage sweeping is pretty quick. At 4500rpm or slightly above, if throttle input is small, the engine is still in close loop. At this stage, the voltage is bumping up & down quickly. If the padel is depressed, the signal will go high & stay. I think the reaction is quick enough.

If the exhaut gas monitoring-feedback system is too slow, how can it catch up with changing load & keep the a/f right?