Quote:
Originally Posted by TitaniumTT
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
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take his suggestion with a grain of salt, every car reacts differently to different AFRs and 16AFR cruising on most 2nd gens simply wont happen because the car will want to fall on its face to even keep up with itself, perhaps he runs a smog pump which skews his figures up or runs an AEM with a crappy bosch wideband sensor which also seems to have figures a bit off..
at any rate, lean the AFRs out as much as you can first while cruising that can maintain speed while having a steady foot on level ground. then advance timing up to about 45 degrees of advance with a 8 degree split. you don't need wideband figures at all, the engine will tell you where it wants to be because it will begin to lose power if you push the AFRs too far on the lean side, on the rich side the engine will not hate you so much before it starts losing power. when leaning out AFRs there is a radical ramp you will reach when the engine doesn't like what you're feeding it.