[TitaniumTT]

Originally Posted by NoDOHC

I know that a six port will idle at stoic. I was able to do so using the factory narrow band sensor when I had to pass emissions (at 5 degrees ATDC Leading and 20 degrees ATDC trailing). If the timing is set retarded enough to idle closed-loop, you are using much more fuel than you would at 15 degrees advance and 13.2:1. I was listing the information to correct previous erroneous information that I posted, not to endorse idling with 10 degree ATDC timing.

TTT, shoot for 16.2:1 AFR (1.1L) and about 50-60 degrees BTDC for fuel economy (at -45 kPA, 2,700 rpm). You will have to run rich of that if you pull more than about 45 kPA vacuum driving down the road.

Few problems with that... I cruise @ ~80-85mph and that's ~4000 rpm. So my mileage isnt going to be the best regardless.

I'm running 1.05-1.1L and 45-50* timing and the EGT's came WAY down.

So when you say -45kpa.... do you mean 55kpa or 45kpa?

Problem is you give it hte slightest bit of throttle and all of a sudden you're at atmosphere running .85ishL. It's the